CN108450108A - Method for determination of amount and irrigation method are poured in double-season early rice biogas slurry sxemiquantitative - Google Patents
Method for determination of amount and irrigation method are poured in double-season early rice biogas slurry sxemiquantitative Download PDFInfo
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- CN108450108A CN108450108A CN201810112290.7A CN201810112290A CN108450108A CN 108450108 A CN108450108 A CN 108450108A CN 201810112290 A CN201810112290 A CN 201810112290A CN 108450108 A CN108450108 A CN 108450108A
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- rice stem
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- 239000002002 slurry Substances 0.000 title claims abstract description 446
- 238000003973 irrigation Methods 0.000 title claims abstract description 166
- 230000002262 irrigation Effects 0.000 title claims abstract description 166
- 238000000034 method Methods 0.000 title claims abstract description 68
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 24
- 235000009566 rice Nutrition 0.000 title claims abstract description 24
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000746966 Zizania Species 0.000 claims abstract description 202
- 235000002636 Zizania aquatica Nutrition 0.000 claims abstract description 201
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 116
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 70
- 241000209094 Oryza Species 0.000 claims abstract description 23
- 241000196324 Embryophyta Species 0.000 claims description 78
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 68
- 239000003337 fertilizer Substances 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 15
- 229910052700 potassium Inorganic materials 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 8
- 239000011707 mineral Substances 0.000 claims description 8
- 239000013589 supplement Substances 0.000 claims description 8
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 22
- 230000005082 stem growth Effects 0.000 abstract description 5
- 238000012271 agricultural production Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 127
- 229910052757 nitrogen Inorganic materials 0.000 description 63
- 239000002689 soil Substances 0.000 description 46
- 239000002352 surface water Substances 0.000 description 46
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 37
- 239000004202 carbamide Substances 0.000 description 21
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 21
- 230000033228 biological regulation Effects 0.000 description 18
- 238000009395 breeding Methods 0.000 description 9
- 230000001488 breeding effect Effects 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 244000085595 Zizania latifolia Species 0.000 description 8
- 235000004259 Zizania latifolia Nutrition 0.000 description 8
- 230000012010 growth Effects 0.000 description 8
- PNNCWTXUWKENPE-UHFFFAOYSA-N [N].NC(N)=O Chemical group [N].NC(N)=O PNNCWTXUWKENPE-UHFFFAOYSA-N 0.000 description 6
- 238000000855 fermentation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 5
- 210000003608 fece Anatomy 0.000 description 5
- 244000144972 livestock Species 0.000 description 5
- 239000010871 livestock manure Substances 0.000 description 5
- 230000004151 fermentation Effects 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 230000008654 plant damage Effects 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- 240000008415 Lactuca sativa Species 0.000 description 2
- 235000003228 Lactuca sativa Nutrition 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 244000144977 poultry Species 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010059410 Faecaluria Diseases 0.000 description 1
- 206010053759 Growth retardation Diseases 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- RDXARWSSOJYNLI-UHFFFAOYSA-N [P].[K] Chemical compound [P].[K] RDXARWSSOJYNLI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 231100000001 growth retardation Toxicity 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000011785 micronutrient Substances 0.000 description 1
- 235000013369 micronutrients Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 230000005080 plant death Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/007—Determining fertilization requirements
Abstract
The present invention relates to double-season early rice biogas slurry sxemiquantitative to pour method for determination of amount and irrigation method, belongs to field of agricultural production technologies.Biogas slurry irrigation process three times is respectively set in the method provided by the invention for pouring double-season early rice using biogas slurry sxemiquantitative with spring in the fall, pass through the setting of field water level before and after the measurement of ammonium nitrogen concentration, biogas slurry irrigation amount, pouring in biogas slurry in each irrigation process, it is easy to operate, and wild rice stem growth inhibition ratio is low, yield is high, and quality is high.
Description
Technical field
The present invention relates to field of agricultural production technologies, and in particular to method for determination of amount is poured in double-season early rice biogas slurry sxemiquantitative
And irrigation method.
Background technology
Breeding combination developing ecology circular agriculture is to solve China's livestock and poultry breeding industry and the sustainable and mutual association of agricultural production
The crucial behave of exhibition is readjusted the distribution, and solves the problems, such as the current main outlet of China's agricultural rural environmental pollution.Government's machine in all parts of the country
A variety of breeding binding patterns are just actively being promoted in pass, such as " livestock and poultry-natural pond fertilizer-grain ", " livestock and poultry-organic fertilizer-grain ", livestock and poultry-natural pond
Fertilizer-dish etc..Biogas slurry is the accessory products after livestock and poultry cultivation or planting industry producing methane through anaerobic fermentation of waste, is a kind of good
Nutrition material, containing abundant big-and-middle micro-nutrient element with a variety of nutriments, wherein protecting nitrogen rate is up to 90% or more.Cause
This, biogas slurry is usually poured as a kind of high-quality liquid nitrogen fertilizer in farmland vegetable plot forest land apply in agricultural production.
Wild rice stem is grass family wild rice category perennial root aquatic vegetable, be rich in a variety of nutrition, as protein, carbohydrate,
Vitamin etc., quality is fresh and tender, reality sweet in flavor, the good merchantable brand being considered as in vegetables, deep to be liked by the masses.In China, wild rice stem has obtained extensively
General plantation, especially during the nearly last ten years, cultivated area constantly expands, current about 70,000 hm of wild rice stem cultivated area in the whole nation2.Wild rice stem is planted
Strain needed to absorb large quantity of moisture and nutrient in entire breeding time.Biogas slurry is poured wild rice stem as high-quality liquid nitrogenous fertilizer and can not only be provided
Moisture content and waterflooding environment needed for wild rice stem growth, and can meet the needs of wild rice stem is to nitrogen and other nutrients.In practical agriculture
In industry production, some peasant households have started to substitute part with biogas slurry or full dose nitrogenous fertilizer pours wild rice stem.However, China is most
Methane-generating pit all uses normal temperature anaerobic fermentation mode, causes fermentation temperature and degree influenced by environmental temperature.In addition different batches
Secondary feed nitrogen content difference, Animal fecal pollution nitrogen content difference, zymotic fluid water fecaluria proportional difference and fermentation time length difference
Etc. factors so that nitrogen concentration is there is large change.Many research reports all show same methane-generating pit different batches natural pond
Liquid nitrogen content and different biogas digested liquor of biogas generating pit nitrogen contents become significantly all larger.
It is well known that ammonium nitrogen is the most important inorganic forms nitrogen of plant growth, plant absorption ammonium nitrogen in addition to nitrate nitrogen
Internal Nitrogen Cycling and metabolism can be directly participated in afterwards.But ammonium nitrogen concentration is excessively high to be easy that crop is made to be poisoned,
Less serious case's growth retardation, severe one then cause plant death.In laboratory in hydroponic culture systems, even if in other nutrients abundance and condition
Under, 5mmol/L (i.e. 90mg/L) ammonium nitrogen concentration will make many plants generate ammonium toxic action.This just brings to biogas slurry is agricultural
Extreme difficulties, nitrogen concentration is high during wild rice stem farmer can also encounter due to biogas slurry often during pouring wild rice stem with biogas slurry, pours
Filling amount is big and wild rice stem is made to grow suppressed situation, this largely hinders wild rice stem farmer using the positive of biogas slurry
Property.The prior art has no a kind of efficient normative method that wild rice stem is poured using biogas slurry.
Invention content
The purpose of the present invention is to provide double-season early rice biogas slurry sxemiquantitative to pour method for determination of amount and irrigation method.This hair
The determination method of bright offer is simple, determines that obtained irrigation amount grows safety to wild rice stem, can promote Water Bamboo Yield, improve and pour
Efficiency.
The present invention provides double-season early rice biogas slurry sxemiquantitative to pour method for determination of amount, includes the following steps：
The ammonium nitrogen concentration in biogas slurry is measured, biogas slurry irrigation amount is determined by formula shown in Formulas I：
Wherein, the unit of biogas slurry irrigation amount is t, and the unit of amount of application of nitrogen fertilizer (pure) is N/ mus of kg, the ammonium state in biogas slurry
The unit of nitrogen concentration is mg/L.
The present invention also provides the double-season early rice irrigation method of the determining method based on the above-mentioned technical proposal, including it is following
Step：
1) late June to early July carries out the transplanting of wild rice stem, and 95% or more plant has young leaves extraction after the transplanting,
And when occurring with tiller bud, the ammonium nitrogen concentration in biogas slurry is measured, sets the first amount of application of nitrogen fertilizer as 10.5kgN/ mus, according to
Formula shown in Formulas I determines the first biogas slurry irrigation amount, carries out the first biogas slurry pouring, and field water level is 15~20cm after pouring；
2) ammonium nitrogen concentration in biogas slurry is measured mid-September, with the second amount of application of nitrogen fertilizer for 9kgN/ mus of determining second natural ponds
Liquid irrigation amount；The second biogas slurry pouring is carried out, field water level is 15~20cm after pouring；
3) it measures the ammonium nitrogen concentration in biogas slurry mid-October, is 10.5kgN/ mu determinations the with third amount of application of nitrogen fertilizer
Three biogas slurry irrigation amounts；Third biogas slurry pouring is carried out, field water level is 20cm or more after pouring；
4) second year is measured the ammonium nitrogen concentration in biogas slurry, is applied with the 4th nitrogenous fertilizer when wild rice stem plant grows to 33~37cm
Dosage is 11kgN/ mus of determining 4th biogas slurry irrigation amounts；The pouring of the 4th biogas slurry is carried out, field water level is 13~17cm after pouring；
5) ammonium nitrogen concentration in biogas slurry is measured mid-May, being 9.5kgN/ mus with the 5th amount of application of nitrogen fertilizer determines the 5th
Biogas slurry irrigation amount；The pouring of the 5th biogas slurry is carried out, field water level is 15~20cm after pouring；
6) late May to early June measures the ammonium nitrogen concentration in biogas slurry, with the 6th amount of application of nitrogen fertilizer for N/ mus of 11kg
Determine the 6th biogas slurry irrigation amount；The pouring of the 6th biogas slurry is carried out, field water level is 20cm or more after pouring.
Preferably, the first biogas slurry pouring is carried out after 25~35d of the step 1) transplanting.
Preferably, the step 4) carries out the 4th biogas slurry and pours in late March to early April.
Preferably, further include to field ridge consolidate increasing processing before each biogas slurry is poured.
Preferably, the height of the ridge is 35cm or more.
Preferably, further include when wild rice stem upgrowth situation difference：Supplement N P and K individual event mineral fertilizer or nitrogen-phosphorus-potassium compound fertilizer.
Preferably, when each biogas slurry is poured, biogas slurry misalignment wild rice stem plant is poured.
Preferably, it before biogas slurry is poured, is determined by formula shown in Formula II and pours preceding field water level：
Wherein, the unit for pouring preceding field water level is cm/ mus, and the unit of biogas slurry irrigation amount is t/ mus.
Preferably, the Transplanting Density of the wild rice stem is 1500~1600 plants/acre, the line-spacing of the wild rice stem is 80~
The spacing in the rows of 100cm, the wild rice stem are 45~50cm.
The present invention provides double-season early rice biogas slurry sxemiquantitative to pour method for determination of amount.Determining method provided by the invention is first
Ammonium nitrogen concentration in biogas slurry is detected, then by determining that formula obtains biogas slurry irrigation amount.Utilize the determination side of the present invention
Method, obtained irrigation amount grow required nitrogen amount of nutrients with wild rice stem and are closer to, and wild rice stem plant strain growth is normal after pouring, and yield is not by shadow
It rings, quality gets a promotion.Determining method provided by the invention can effectively avoid blindly pour biogas slurry caused by wild rice stem growth by
The problems such as inhibition, yield declines；The enthusiasm that wild rice stem farmer applies biogas slurry is promoted, applying for chemical nitrogen fertilizer and phosphorus potassium is reduced
Dosage promotes breeding combination ecological circulation agricultural development.
Description of the drawings
Fig. 1 is influence result figure of the biogas slurry dosage provided by the invention to yield；
Fig. 2 is the Water Bamboo Yield comparing result figure under the different disposal method that the embodiment of the present invention 4 provides；
Fig. 3 is dry matter accumulative comparison knot in wild rice stem plant above ground portion under the different disposal method that the embodiment of the present invention 4 provides
Fruit is schemed；
Fig. 4 is wild rice stem plant plant height comparing result figure under the different disposal method that the embodiment of the present invention 4 provides；
Fig. 5 is the long comparing result figure of wild rice stem plant leaf leaf under the different disposal method that the embodiment of the present invention 4 provides；
Ammonium nitrogen comparing result figure in the Soil surface water of wild rice stem field under the different disposal method that Fig. 6 provides for the embodiment of the present invention 4.
Specific implementation mode
The present invention provides double-season early rice biogas slurry sxemiquantitative to pour method for determination of amount, includes the following steps：
The ammonium nitrogen concentration in biogas slurry is measured, biogas slurry irrigation amount is determined by formula shown in Formulas I：
Wherein, the unit of biogas slurry irrigation amount is t, and the unit of amount of application of nitrogen fertilizer is N/ mus of kg, the ammonium nitrogen concentration in biogas slurry
Unit be mg/L.
The present invention is to NH in the biogas slurry4 +The measurement method of-N concentration does not have special restriction, using people in the art
NH known to member4 +- N measurement of concetration products measure, as quickly examined using ammonium nitrogen in the water sold extensively in the market
Survey NH in the clear biogas slurry of products measure4 +- N concentration, since water sample need to be cleared up and be shown without color, mesh when full nitrogen detects
It is preceding to there is no full nitrogen detection product in the market.
In the present invention, the amount of application of nitrogen fertilizer refers to that the nitrogenous fertilizer applied every time conversion is the amount of purity nitrogen (N), that is, needs
The pure nitrogen level of applied nitrogen.In the present invention, the nitrogenous fertilizer is preferably urea.In the present invention, 0.65 numerical value in the formula
Selection meaning be：By NH in biogas slurry4 +- N accounts for the content of TN and is determined with 65%.
Obtaining for formula of the present invention assumes that NH in biogas slurry4 +- N concentration account for TN concentration 65~95% based on carry out
It carries out.The nitrogen concentration numerical value is obtained jointly by nitrogen content in the detection of practical biogas slurry nitrogen content and bibliography biogas slurry, institute
That states nitrogen concentration numerical value show that process is specific as follows：
Nitrogen content range determines scheme in biogas slurry：The same year, (September part and December) acquired the live pig of Jiaxing Area 8 at twice
Cultivate factory's methane-generating pit biogas slurry sample after fermentation, analysis wherein ammonium nitrogen, nitrate nitrogen, total nitrogen content and different shape nitrogen content
Account for full nitrogen ratio.In addition, by having reported biogas slurry nitrogen content in consulting literatures data.Two kinds of approach are combined in clear biogas slurry
Nitrogen content variation range.
The irrigation amount that biogas slurry pours safely wild rice stem ecologically determines scheme：Pass through the biogas slurry pouring double-season early rice field examination of two seasons
It tests and specifies and can ensure autumn wild rice stem and summer wild rice stem normal plants, ensure the biogas slurry maximum irrigation amount that yield does not reduce
With pouring range.Field trial scheme：With 65 kgs/acre of autumn wild rice stem (abbreviation autumn hay) urea (nitrogenous fertilizer) amount of application and summer hay
(abbreviation summer hay) 69 kgs/acre of urea amount of application in vain.Urea Dressing date and ratio are：Autumn hay seedling separation fertilizer, tiller lift fertilizer and
Pregnant hay fertilizer, applicating ratio 35%：30%：35%；Summer hay seedling separation fetilizer for tillering lifts fertilizer and pregnant hay fertilizer, applicating ratio 35%：
30%：Control conducts a research based on 35%.Wherein, autumn hay applies 65 kgs/acre and summer hay applies 69 kgs/acre of urea, and urea is applied
It is by determining after carrying out investigation extensively and access lot of documents to double-season early rice farmer with period and ratio.In autumn hay urea
A series of biogas slurry irrigation amounts from low to high are designed on the basis of 69 kgs/acre of 65 kgs/acre of amount of application and summer hay urea amount of application
Processing, including：Using 50% urea amount, the biogas slurry of the same nitrogen content of the other half urea substitutes (0.5N)；Urea is not applied, entirely
Portion's urea substitutes (1N) with same nitrogen content biogas slurry；Urea is not applied, biogas slurry dosage is：It is urea nitrogen quantity to make nitrogen quantity in biogas slurry
1.5 times (1.5N)；Urea is not applied, biogas slurry dosage is：It is 2 times (2N) of urea nitrogen quantity to make nitrogen quantity in biogas slurry；Do not apply urea, biogas slurry
Dosage is：It is 2.7 times (2.7N) of urea nitrogen quantity to make nitrogen quantity in biogas slurry.Full nitrogen contains in sampling determination biogas slurry before each biogas slurry is poured
It measures (mg/L), and determines biogas slurry irrigation amount.Phosphate fertilizer is respectively handled in field trial and Potassium Fertilizer is consistent.Pass through field trial
It draws a conclusion：When not applying urea, when biogas slurry dosage is that nitrogen quantity is 2 times of urea nitrogen quantity in biogas slurry, wild rice stem plant strain growth start by
To certain inhibiting effect, and yield has certain decline.Urea is not applied, biogas slurry dosage is nitrogen quantity is urea nitrogen quantity in biogas slurry 2.7
Times when inhibiting effect it is more obvious.Urea is not applied, to hay when biogas slurry dosage is within nitrogen quantity is 1.5 times of urea nitrogen quantity in biogas slurry
White plant production and yield do not influence substantially, and the results are shown in Figure 1 for influence of the biogas slurry dosage to yield (notes：CK is pure fertilizer
Using processing).However, it is contemplated that containing a certain amount of heavy metal element, the big increase environmental pollution wind of irrigation amount in (1) biogas slurry
Danger；(2) field water level is high when the high irrigation amount of biogas slurry nitrogen concentration is big, and the consumption time is long, increases the pollution risk to surface water body.
Therefore, the upper limit of biogas slurry irrigation amount is set as 1 times of chemical fertilizer nitrogen quantity by the present invention.
Technical solution result：
Nitrogen content range determines scheme in biogas slurry：
8 Pig breeding plant methane-generating pits nitrogen content characteristic in biogas slurry sample after fermentation：
1. full nitrogen (TN)：Nitrogen concentration amplitude of variation is 320~1358mg/L (average 903mg/L), variation in September part biogas slurry
Coefficient is 40.2%；It is 260~779mg/L (average 600mg/L), the coefficient of variation 28.1% to acquire amplitude of variation December.
When the same methane-generating pit acquires in different time points, nitrogen concentration variation is also larger in biogas slurry, is 46.1~731mg/L (average
427mg/L), the coefficient of variation 55.6%；
2. ammonium nitrogen (NH4 +-N)：As ammonium nitrogen (NH in the 8 cultivation factory biogas digested liquor of biogas generating pit acquired in the same time4 +-N)
Concentration is 246~1196mg/L (average 784mg/L), the coefficient of variation 41.4% in the luffing of September part；In the luffing in December
For 236~692mg/L (average 528mg/L), the coefficient of variation 28.2%.When the same methane-generating pit acquires in different time points
When, NH in biogas slurry4 +The variation of-N concentration is also larger, is 46.5~682mg/L (average 378mg/L), the coefficient of variation 57.7%；
3. nitrate nitrogen (NO3 --N)：Nitrate nitrogen (the NO in the biogas slurry of 8 cultivation factory methane-generating pits of acquisition of same time3 --N)
Concentration is 6.60~27.4mg/L (average 18.7mg/L), the coefficient of variation 40.4%, in the change in December in the luffing of September part
Width is 3.95~20.6mg/L (average 12.9mg/L), the coefficient of variation 44.0%.When the same methane-generating pit in different time points
When acquisition, NO in biogas slurry3 -The variation of-N concentration is 0.82~17.0mg/L (average 6.23mg/L), the coefficient of variation 96.8%.
The same year September part and December surveyed ammonium nitrogen (NH from the biogas slurry of 8 cultivation factory methane-generating pits4 +- N), nitrate nitrogen
(NO3 -- N) to account for the average percent of full nitrogen (TN) content be respectively 87.2% and 2.93%.This shows the main nitrogen in biogas slurry
Plain form is ammonium nitrogen (NH4 +- N) based on.Some Soluble Organic N, nitrate nitrogen content are relatively low simultaneously.
From the point of view of having reported biogas slurry nitrogen content in documents and materials, in biogas slurry nitrogen content fluctuation it is larger, amplitude be 189~
1680mg/L.Same methane-generating pit different acquisition time, or different methane-generating pits acquire biogas slurry sample, or not homologous biogas digested liquor of biogas generating pit sample
In product there is larger difference in total nitrogen content.In addition, from there is ammonium nitrogen (NH4 +- N) content documents and materials report it is also seen that
NH4 +- N is the main forms of nitrogen in biogas slurry.
Biogas slurry nitrogen content in 1 documents and materials of table
In conjunction with 260~1358mg/L of nitrogen concentration in the Pig breeding plant biogas slurry pond liquid of Jiaxing Nanhu District 8, documents and materials report
189~1680mg/L of nitrogen concentration in road biogas slurry.Can be with nitrogen concentration in primitive decision biogas slurry within 2000mg/L, minimum concentration base
This is in 100mg/L or so.In addition, in conjunction with NH in the Pig breeding plant biogas slurry pond liquid of Jiaxing Nanhu District 84 +- N account for nitrogen 76.9%~
92.9% (average out to 87.2%), documents and materials report NH in biogas slurry4 +- N accounts for nitrogen 65.6%~92.8%, can be with primitive decision natural pond
NH in liquid4 +- N concentration can account for 65~95% (average 80% or so) of nitrogen concentration.
The present invention quickly detects ammonium nitrogen concentration in the clear biogas slurry of product using ammonium nitrogen in the water sold extensively in the market
Value or range, with NH in biogas slurry4 +- N accounts for the 65%~95% of TN contents, determines total nitrogen content range in biogas slurry, but in view of to the greatest extent
High concentration biogas slurry is may be decreased excessively to pour to negative effect caused by wild rice stem growth, by NH in biogas slurry4 +- N account for the content of TN with
65% calculates, and the nitrogen quantity in poured biogas slurry is identical as the pure nitrogen level of nitrogen application to be calculated.
The present invention provides the double-season early rice irrigation methods of the determining method based on the above-mentioned technical proposal, including following step
Suddenly：
1) late June to early July carries out the transplanting of wild rice stem, and 95% or more plant has young leaves extraction after the transplanting,
And when occurring with tiller bud, the ammonium nitrogen concentration in biogas slurry is measured, sets the first amount of application of nitrogen fertilizer as 10.5kgN/ mus, according to
Formula shown in Formulas I determines the first biogas slurry irrigation amount, carries out the first biogas slurry pouring, and field water level is 15~20cm after pouring；
2) ammonium nitrogen concentration in biogas slurry is measured mid-September, with the second amount of application of nitrogen fertilizer for 9kgN/ mus of determining second natural ponds
Liquid irrigation amount；The second biogas slurry pouring is carried out, field water level is 15~20cm after pouring；
3) it measures the ammonium nitrogen concentration in biogas slurry mid-October, is 10.5kgN/ mu determinations the with third amount of application of nitrogen fertilizer
Three biogas slurry irrigation amounts；Third biogas slurry pouring is carried out, field water level is 20cm or more after pouring；
4) second year is measured the ammonium nitrogen concentration in biogas slurry, is applied with the 4th nitrogenous fertilizer when wild rice stem plant grows to 33~37cm
Dosage is 11kgN/ mus of determining 4th biogas slurry irrigation amounts；The pouring of the 4th biogas slurry is carried out, field water level is 13~17cm after pouring；
5) ammonium nitrogen concentration in biogas slurry is measured mid-May, being 9.5kgN/ mus with the 5th amount of application of nitrogen fertilizer determines the 5th
Biogas slurry irrigation amount；The pouring of the 5th biogas slurry is carried out, field water level is 15~20cm after pouring；
6) late May to early June measures the ammonium nitrogen concentration in biogas slurry, with the 6th amount of application of nitrogen fertilizer for N/ mus of 11kg
Determine the 6th biogas slurry irrigation amount；The pouring of the 6th biogas slurry is carried out, field water level is 20cm or more after pouring.
The present invention carries out the transplanting of wild rice stem in late June to early July, and 95% or more plant has young leaves pumping after transplanting
When going out, and occurring with tiller bud, the ammonium nitrogen concentration in biogas slurry is measured, sets the first amount of application of nitrogen fertilizer as 10.5kgN/ mus,
The first biogas slurry irrigation amount is determined according to formula shown in Formulas I, carries out the first biogas slurry pouring, and field water level is 15~20cm after pouring.
In the present invention, field water level is preferably 16cm after the pouring.In the present invention, the Transplanting Density of the wild rice stem be 1500~
1600 plants/acre, more preferably 1550 plants/acre, the line-spacing of the wild rice stem are 80~100cm, more preferably 90cm, the wild rice stem
Spacing in the rows is 45~50cm, more preferably 48cm, is planted with the narrow strain of wide row.The present invention measures ammonium nitrogen concentration in biogas slurry
Afterwards, biogas slurry irrigation amount is determined by formula shown in Formulas I：
Wherein, the amount of application of nitrogen fertilizer is 10.5kgN/ mus.
In the present invention, it before biogas slurry is poured, is preferably determined by formula shown in Formula II and pours preceding field water level：
Wherein, the unit for pouring preceding field water level is cm/ mus, and the unit of biogas slurry irrigation amount is t/ mus.In the present invention, institute
It is 1 mu of ground area to state 667 in formula.
In the present invention, it can be that wild rice stem applies seed manure that first biogas slurry, which is poured, be slow seedling rank after wild rice stem plantlet of transplant
Section, the present invention 95% or more plant preferably after the transplanting have a young leaves extraction, and when with tiller bud, carry out the first biogas slurry
It pours, the first biogas slurry pouring is more preferably carried out after transplanting 25~35d.The present invention is before biogas slurry pouring, preferably to field ridge
Consolidate and increase processing, reduces biogas slurry outflow risk.In the present invention, the highly preferred of the ridge is 35cm or more.
In the present invention, preferably further include when wild rice stem upgrowth situation difference：Supplement N P and K individual event mineral fertilizer or nitrogen-phosphorus-potassium compound fertilizer.At this
In invention, when each biogas slurry is poured, biogas slurry misalignment wild rice stem plant is poured, in order to avoid wild rice stem plant is damaged.This hair
The bright pouring mode to the biogas slurry does not have special restriction, using conventional biogas slurry applying mode, such as directly pours into biogas slurry
Or biogas slurry is mixed with water latter with pouring into field.If there are heavy rain in continuous rainy days, or prediction in a short time, not to wild rice stem
It is poured, or reduces biogas slurry irrigation amount, reduce biogas slurry outflow risk.
Mid-September, the present invention measure the ammonium nitrogen concentration in biogas slurry, are 9kgN/ mu determinations the with the second amount of application of nitrogen fertilizer
Two biogas slurry irrigation amounts；The second biogas slurry pouring is carried out, field water level is 15~20cm after pouring.In the present invention, after the pouring
Field water level is preferably 18cm.In the present invention, the Transplanting Density of the wild rice stem is 1500~1600 plants/acre, more preferably
1550 plants/acre, the line-spacing of the wild rice stem is 80~100cm, and the spacing in the rows of more preferably 90cm, the wild rice stem are 45~50cm, more
Preferably 48cm is planted with the narrow strain of wide row.After the present invention measures ammonium nitrogen concentration in biogas slurry, pass through formula shown in Formulas I
Determine biogas slurry irrigation amount：
Wherein, the amount of application of nitrogen fertilizer is 9kgN/ mus.
In the present invention, it before biogas slurry is poured, is preferably determined by formula shown in Formula II and pours preceding field water level：
Wherein, the unit for pouring preceding field water level is cm/ mus, and the unit of biogas slurry irrigation amount is t/ mus.
In the present invention, the second biogas slurry pouring can promote wild rice stem plant tillering and lift.The present invention is poured in biogas slurry
Before filling, preferably field ridge consolidate and increase processing, reduce biogas slurry outflow risk.In the present invention, the height of the ridge
Degree is preferably 35cm or more.In the present invention, preferably further include when wild rice stem upgrowth situation difference：Supplement N P and K individual event mineral fertilizer
Or nitrogen-phosphorus-potassium compound fertilizer.In the present invention, when each biogas slurry is poured, biogas slurry misalignment wild rice stem plant is poured, in order to avoid to hay
White plant damages.The present invention does not have special restriction to the pouring mode of the biogas slurry, using conventional biogas slurry applying mode
, such as directly pour into biogas slurry or mix with water biogas slurry and latter pour into field together.In case of continuous rainy days, or prediction are short
There is heavy rain in phase, wild rice stem is not poured, or reduce biogas slurry irrigation amount, reduces biogas slurry outflow risk.
Mid-October, the present invention measure the ammonium nitrogen concentration in biogas slurry, are that N/ mus of 10.5kg is true with third amount of application of nitrogen fertilizer
Determine third biogas slurry irrigation amount；Third biogas slurry pouring is carried out, field water level is 20cm or more after pouring.In the present invention, described to pour
Field water level is preferably 22~25cm after filling, more preferably 24cm.In the present invention, the Transplanting Density of the wild rice stem be 1500~
1600 plants/acre, more preferably 1550 plants/acre, the line-spacing of the wild rice stem are 80~100cm, more preferably 90cm, the wild rice stem
Spacing in the rows is 45~50cm, more preferably 48cm, is planted with the narrow strain of wide row.The present invention measures ammonium nitrogen concentration in biogas slurry
Afterwards, biogas slurry irrigation amount is determined by formula shown in Formulas I：
Wherein, the amount of application of nitrogen fertilizer is 10.5kgN/ mus.
In the present invention, it before biogas slurry is poured, is preferably determined by formula shown in Formula II and pours preceding field water level：
Wherein, the unit for pouring preceding field water level is cm/ mus, and the unit of biogas slurry irrigation amount is t/ mus.
In the present invention, the third biogas slurry pouring can promote the pregnant hay growth of wild rice stem.The present invention is excellent before biogas slurry pouring
Choosing, which to field ridge consolidate, increases processing, reduces biogas slurry outflow risk.In the present invention, the highly preferred of the ridge is
35cm or more.In the present invention, preferably further include when wild rice stem upgrowth situation difference：Supplement N P and K individual event mineral fertilizer or N P and K
Composite fertilizer.In the present invention, when each biogas slurry is poured, biogas slurry misalignment wild rice stem plant is poured, in order to avoid wild rice stem plant is made
At injury.The present invention does not have special restriction to the pouring mode of the biogas slurry, such as straight using conventional biogas slurry applying mode
It connects and pours into biogas slurry or mix with water biogas slurry latter with pouring into field.In case of continuous rainy days, or prediction have greatly in a short time
Rain does not pour wild rice stem, or reduces biogas slurry irrigation amount, reduces biogas slurry outflow risk.
Second year measures the ammonium nitrogen concentration in biogas slurry, with the 4th nitrogen application when wild rice stem plant grows to 33~37cm
Amount is 11kgN/ mus of determining 4th biogas slurry irrigation amounts；The pouring of the 4th biogas slurry is carried out, field water level is 13~17cm after pouring.At this
In invention, water level is preferably 15cm after the pouring.In the present invention, the Transplanting Density of the wild rice stem be 1500~1600 plants/
Mu, more preferably 1550 plants/acre, the line-spacing of the wild rice stem is 80~100cm, and the spacing in the rows of more preferably 90cm, the wild rice stem are
45~50cm, more preferably 48cm are planted with the narrow strain of wide row.After the present invention measures ammonium nitrogen concentration in biogas slurry, pass through
Formula shown in Formulas I determines biogas slurry irrigation amount：
Wherein, the amount of application of nitrogen fertilizer is 11kgN/ mus.
In the present invention, it before biogas slurry is poured, is preferably determined by formula shown in Formula II and pours preceding field water level：
Wherein, the unit for pouring preceding field water level is cm/ mus, and the unit of biogas slurry irrigation amount is t/ mus.
In the present invention, after 3 month temperatures go up, sprouting, plant to be planted are grown again in hay hay pier last time autumn the first half of the year
Length is to 33~37cm, when more preferably length is to 35cm, carries out the 4th biogas slurry and pours.In the present invention, the 4th biogas slurry is poured
It act as that wild rice stem plant is promoted to turn green tiller.The present invention preferably to field ridge consolidate and increases processing before biogas slurry pouring,
Reduce biogas slurry outflow risk.In the present invention, the highly preferred of the ridge is 35cm or more.In the present invention, when wild rice stem is given birth to
Preferably further include when long situation difference：Supplement N P and K individual event mineral fertilizer or nitrogen-phosphorus-potassium compound fertilizer.In the present invention, each biogas slurry is poured
When filling, biogas slurry misalignment wild rice stem plant is poured, in order to avoid wild rice stem plant is damaged.Pouring of the present invention to the biogas slurry
Mode does not have special restriction, using conventional biogas slurry applying mode, as after directly pouring into biogas slurry or mixing biogas slurry with water
Field is poured into together.If there are heavy rain in continuous rainy days, or prediction in a short time, wild rice stem is not poured, or reduce natural pond
Liquid irrigation amount reduces biogas slurry outflow risk.
Mid-May, the present invention measure the ammonium nitrogen concentration in biogas slurry, with the 5th amount of application of nitrogen fertilizer for N/ mus of determinations of 9.5kg
5th biogas slurry irrigation amount；The pouring of the 5th biogas slurry is carried out, field water level is 15~20cm after pouring.In the present invention, the pouring
Field water level is preferably 18cm afterwards.In the present invention, the Transplanting Density of the wild rice stem is 1500~1600 plants/acre, more preferably
1550 plants/acre, the line-spacing of the wild rice stem is 80~100cm, and the spacing in the rows of more preferably 90cm, the wild rice stem are 45~50cm, more
Preferably 48cm is planted with the narrow strain of wide row.After the present invention measures ammonium nitrogen concentration in biogas slurry, pass through formula shown in Formulas I
Determine biogas slurry irrigation amount：
Wherein, the amount of application of nitrogen fertilizer is N/ mus of 9.5kg.
In the present invention, it before biogas slurry is poured, is preferably determined by formula shown in Formula II and pours preceding field water level：
Wherein, the unit for pouring preceding field water level is cm/ mus, and the unit of biogas slurry irrigation amount is t/ mus.
In the present invention, what the 5th biogas slurry was poured act as promoting wild rice stem plant strain growth, lifts.The present invention is in biogas slurry
Before pouring, preferably field ridge consolidate and increase processing, reduce biogas slurry outflow risk.In the present invention, the ridge
Highly preferred is 35cm or more.In the present invention, preferably further include when wild rice stem upgrowth situation difference：Supplement N P and K individual event mineral
Fertilizer or nitrogen-phosphorus-potassium compound fertilizer.In the present invention, when each biogas slurry is poured, biogas slurry misalignment wild rice stem plant is poured, so as not to it is right
Wild rice stem plant damages.The present invention does not have special restriction to the pouring mode of the biogas slurry, using conventional biogas slurry application side
Formula, such as directly pours into biogas slurry or mixes with water biogas slurry and latter pour into field together.Such as continuous rainy days, or prediction
There is heavy rain in a short time, wild rice stem is not poured, or reduce biogas slurry irrigation amount, reduces biogas slurry outflow risk.
Late May to early June, the present invention measure the ammonium nitrogen concentration in biogas slurry, are with the 6th amount of application of nitrogen fertilizer
11kgN/ mus of the 6th biogas slurry irrigation amounts of determination；The pouring of the 6th biogas slurry is carried out, field water level is 20cm or more after pouring.In the present invention
In, field water level is preferably 22~25cm after the pouring, more preferably 24cm.In the present invention, the transplanting of the wild rice stem is close
Degree is 1500~1600 plants/acre, more preferably 1550 plants/acre, and the line-spacing of the wild rice stem is 80~100cm, more preferably 90cm,
The spacing in the rows of the wild rice stem is 45~50cm, more preferably 48cm, is planted with the narrow strain of wide row.The present invention is to ammonium nitrogen concentration in biogas slurry
After measuring, biogas slurry irrigation amount is determined by formula shown in Formulas I：
Wherein, the amount of application of nitrogen fertilizer is 11kgN/ mus.
In the present invention, it before biogas slurry is poured, is preferably determined by formula shown in Formula II and pours preceding field water level：
Wherein, the unit for pouring preceding field water level is cm/ mus, and the unit of biogas slurry irrigation amount is t/ mus.
In the present invention, what the 6th biogas slurry was poured act as promoting the pregnant hay growth of summer wild rice stem.The present invention is in biogas slurry
Before pouring, preferably field ridge consolidate and increase processing, reduce biogas slurry outflow risk.In the present invention, the ridge
Highly preferred is 35cm or more.In the present invention, preferably further include when wild rice stem upgrowth situation difference：Supplement N P and K individual event mineral
Fertilizer or nitrogen-phosphorus-potassium compound fertilizer.In the present invention, when each biogas slurry is poured, biogas slurry misalignment wild rice stem plant is poured, so as not to it is right
Wild rice stem plant damages.The present invention does not have special restriction to the pouring mode of the biogas slurry, using conventional biogas slurry application side
Formula, such as directly pours into biogas slurry or mixes with water biogas slurry and latter pour into field together.Such as continuous rainy days, or prediction
There is heavy rain in a short time, wild rice stem is not poured, or reduce biogas slurry irrigation amount, reduces biogas slurry outflow risk.
Respectively the stage of pouring is provided with maximum pouring numerical quantity to the present invention, avoids and presses down caused by biogas slurry nitrogen concentration height
Wild rice stem growth processed or pregnant hay, while reducing water environment, the risk of Soil Environmental Pollution.
In the present invention, the principle of the irrigation method is：It is with the entire breeding time amount of application of nitrogen fertilizer of autumn wild rice stem
450kgN/ha (65kg urea/mu), seed manure (pouring of the first biogas slurry), tiller lift fertile (pourings of the second biogas slurry), pregnant hay fertile (the
Three biogas slurries pour) applicating ratio be 35%：30%：On the basis of 35%；(69kg urinates summer wild rice stem amount of application of nitrogen fertilizer 475kgN/ha
Element/mu), seedling fetilizer for tillering (pouring of the 4th biogas slurry) lifts fertile (pouring of the 5th biogas slurry), fertile (pouring of the 6th biogas slurry) applicating ratio of pregnant hay
It is 35%：30%：On the basis of 35%.In conjunction with following two formula, each stage numerical value in above-mentioned biogas slurry irrigation method is obtained.Natural pond
Soil surface water wicking height calculation formula is as follows after liquid irrigation amount and pouring：
Biogas slurry irrigation amount (W) calculation formula：Amount of application of nitrogen fertilizer (pure, unit：KgN/ mus) ÷ (determined by colorimetric card
NH4 +- N concentration ÷ 0.65*0.001) (unit：T/ mus)；
Soil surface water increases (H) (unit after pouring：Cm/ mus) calculation formula：Biogas slurry irrigation amount (unit：T/ mus) (the lists of ÷ 667
Position：m2)×100。
In the present invention, it is preferably poured according to biogas slurry irrigation amount and Soil surface water water level wicking height to adjust before biogas slurry is poured
Preceding Soil surface water height of water level, it is identical in biogas slurry irrigation amount, biogas slurry pouring can be suitably reduced when lettuce is relatively low
Preceding Soil surface water water can suitably increase Soil surface water water when lettuce is high.
With reference to specific embodiment to the computational methods of double-season early rice biogas slurry sxemiquantitative irrigation amount of the present invention and
Irrigation method is further described in detail, and technical scheme of the present invention includes but not limited to following embodiment.
Embodiment 1
Autumn：
(1) seed manure irrigation amount：26d after wild rice stem plantlet of transplant, young leaves extraction, and with tiller bud, measure the ammonium in biogas slurry
State nitrogen concentration is 330mg/L, with the first amount of application of nitrogen fertilizer for N/ mus of 10.5kg, determines that biogas slurry is poured according to formula shown in Formulas I
Amount：
Determine that the first biogas slurry irrigation amount is 20.6t/ mus；Carry out the first biogas slurry pouring, before pouring according to biogas slurry irrigation amount come
Appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at 15cm after so that biogas slurry is poured.By public shown in Formula II
Formula, which determines, pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 3.1cm or so, before biogas slurry is poured
Soil surface water position is 11.9cm；
(2) fertile irrigation amount is lifted in tiller：September 9 days, the ammonium nitrogen concentration measured in biogas slurry is 700mg/L, with the second nitrogenous fertilizer
Amount of application is 9kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
Determine that the second biogas slurry irrigation amount is 8.3t/ mus；The second biogas slurry pouring is carried out to promote wild rice stem plant tillering and to lift,
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level before pouring, the total height of water level in wild rice stem field is kept after so that biogas slurry is poured
In 20cm.
It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1.3cm or so, before biogas slurry is poured
Soil surface water water level is 18.7cm；
(3) pregnant hay fertilizer irrigation amount：October 8, the ammonium nitrogen concentration measured in biogas slurry is 1500mg/L, is applied with third nitrogenous fertilizer
Dosage is 10.5kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that third biogas slurry irrigation amount is 4.5t/ mus, carries out the pouring of third biogas slurry to promote the pregnant hay of wild rice stem to grow, before pouring
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at after so that biogas slurry is poured
22cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 0.7cm, the field face before biogas slurry pouring
Water water level is 21.3cm.
Summer
After 3 month temperatures go up, sprouting can be grown again on autumn prior year Jiao Jiaodun, plant to be planted height is grown to 35cm,
Time is about mid-March, proceeds by biogas slurry pouring.
(1) seedling fetilizer for tillering irrigation amount：Wild rice stem plant grows to 35cm height, and it is 450mg/L to measure the ammonium nitrogen concentration in biogas slurry,
With the 4th amount of application of nitrogen fertilizer for 11kgN/ mus, biogas slurry irrigation amount is determined according to formula shown in Formulas I：
Determine that the 4th biogas slurry irrigation amount is 15.8t/ mus；
The pouring of the 4th biogas slurry is carried out, biogas slurry is made come appropriate regulation wild rice stem field height of water level according to biogas slurry irrigation amount before pouring
The total height of water level in wild rice stem field is maintained at 15cm after pouring.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 2.4cm, the field face before biogas slurry pouring
Water water level is 12.6cm, however is poured；
(2) fertile irrigation amount is lifted：May 12, the ammonium nitrogen concentration measured in biogas slurry is 800mg/L, is applied with the 5th nitrogenous fertilizer
Dosage is 9.5kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that the 5th biogas slurry irrigation amount is 7.7t/ mus, carries out the 5th biogas slurry and pour to promote wild rice stem plant strain growth, before pouring
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at after so that biogas slurry is poured
18cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1.2cm, the field face before biogas slurry pouring
Water water level is 16.8cm, however is poured；
(3) pregnant hay fertilizer irrigation amount：Late May, the ammonium nitrogen concentration measured in biogas slurry is 1100mg/L, is applied with the 6th nitrogenous fertilizer
Dosage is 11kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that the 6th biogas slurry irrigation amount is 6.5t/ mus, carries out the 6th biogas slurry and pour to promote the pregnant hay of summer hay to grow, before pouring
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at after so that biogas slurry is poured
22cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1cm, the Soil surface water before biogas slurry pouring
Water level is 21cm, is then poured.
Embodiment 2
Autumn：
(1) seed manure irrigation amount：26d after wild rice stem plantlet of transplant, young leaves extraction, and have part tiller bud, it measures in biogas slurry
Ammonium nitrogen concentration is 620mg/L, with the first amount of application of nitrogen fertilizer for N/ mus of 10.5kg, determines that biogas slurry is poured according to formula shown in Formulas I
Amount：
Determine that the first biogas slurry irrigation amount is 11t/ mus；
The first biogas slurry pouring is carried out, biogas slurry is made come appropriate regulation wild rice stem field height of water level according to biogas slurry irrigation amount before pouring
The total height of water level in wild rice stem field is maintained at 16cm after pouring.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1.7cm or so, before biogas slurry is poured
Soil surface water water level is 14.3cm, however is poured；
(2) fertile irrigation amount is lifted in tiller：September 9 days, the ammonium nitrogen concentration measured in biogas slurry is 1200mg/L, with the second nitrogen
Fertile amount of application is 9kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that the second biogas slurry irrigation amount is 4.8t/ mu, carries out the second biogas slurry pouring to promote wild rice stem plant tillering and to lift,
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level before pouring, the total height of water level in wild rice stem field is kept after so that biogas slurry is poured
In 18cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 0.7cm or so, before biogas slurry is poured
Soil surface water water level is 17.3cm, is then poured；
(3) pregnant hay fertilizer irrigation amount：October 8, the ammonium nitrogen concentration measured in biogas slurry is 730mg/L, is applied with third nitrogenous fertilizer
Dosage is 10.5kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that third biogas slurry irrigation amount is 9.3t/ mus, carries out the pouring of third biogas slurry to promote the pregnant hay of wild rice stem to grow, before pouring
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at after so that biogas slurry is poured
23cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1.4cm, the field face before biogas slurry pouring
Water water level is 21.6cm, is then poured.
Summer
After 3 month temperatures go up, sprouting can be grown again on autumn prior year Jiao Jiaodun, plant to be planted height is grown to 35cm,
Time is about mid-March, proceeds by biogas slurry pouring.
(1) seedling fetilizer for tillering irrigation amount：Wild rice stem plant grows to 35cm height, and it is 380mg/L to measure the ammonium nitrogen concentration in biogas slurry,
With the 4th amount of application of nitrogen fertilizer for 11kgN/ mus, biogas slurry irrigation amount is determined according to formula shown in Formulas I：
Determine that the 4th biogas slurry irrigation amount is 18.8t/ mus；Carry out the 4th biogas slurry pouring, pour before according to biogas slurry irrigation amount come
Appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at 15cm after so that biogas slurry is poured.By public shown in Formula II
Formula, which determines, pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 2.8cm, amount of application of nitrogen fertilizer biogas slurry is poured
Soil surface water water level before filling is 12.2cm, however is poured；
(2) fertile irrigation amount is lifted：May 12, the ammonium nitrogen concentration measured in biogas slurry is 840mg/L, is applied with the 5th nitrogenous fertilizer
Dosage is 9.5kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
Determine that the 5th biogas slurry irrigation amount is 7.3t/ mus；The 5th biogas slurry is carried out to pour to promote wild rice stem plant strain growth, before pouring
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at after so that biogas slurry is poured
16cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1.1cm, amount of application of nitrogen fertilizer biogas slurry is poured
Soil surface water water level before filling is 14.9cm, however is poured；
(3) pregnant hay fertilizer irrigation amount：Late May, the ammonium nitrogen concentration measured in biogas slurry is 280mg/L, is applied with the 6th nitrogenous fertilizer
Dosage is 11kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that the 6th biogas slurry irrigation amount is 25.5t/ mus, carries out the 6th biogas slurry and pour to promote the pregnant hay of summer hay to grow, pour
It is preceding according to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at after so that biogas slurry is poured
22cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 3.8cm or so, before biogas slurry is poured
Soil surface water water level is 18.2cm, is then poured.
Embodiment 3
Autumn：
(1) seed manure irrigation amount：26d after wild rice stem plantlet of transplant, young leaves extraction, and have part tiller bud, it measures in biogas slurry
Ammonium nitrogen concentration is 370mg/L, with the first amount of application of nitrogen fertilizer for N/ mus of 10.5kg, determines that biogas slurry is poured according to formula shown in Formulas I
Amount：
Determine that the first biogas slurry irrigation amount is 18.4t/ mus；Carry out the first biogas slurry pouring, before pouring according to biogas slurry irrigation amount come
Appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at 20cm after so that biogas slurry is poured.By public shown in Formula II
Formula, which determines, pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 2.8cm or so, amount of application of nitrogen fertilizer natural pond
Soil surface water water level before liquid pours is 17.2cm, however is poured；
(2) fertile irrigation amount is lifted in tiller：September 9 days, the ammonium nitrogen concentration measured in biogas slurry is 730mg/L, with the second nitrogenous fertilizer
Amount of application is 9kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that the second biogas slurry irrigation amount is 4.2t/ mu, carries out the second biogas slurry pouring to promote wild rice stem plant tillering and to lift,
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level before pouring, the total height of water level in wild rice stem field is kept after so that biogas slurry is poured
In 18cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 0.7cm or so, amount of application of nitrogen fertilizer natural pond
Soil surface water water level before liquid pours is 17.3cm, is then poured；
(3) pregnant hay fertilizer irrigation amount：October 8, the ammonium nitrogen concentration measured in biogas slurry is 1000mg/L, is applied with third nitrogenous fertilizer
Dosage is 10.5kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that third biogas slurry irrigation amount is 6.8t/ mus, carries out the pouring of third biogas slurry to promote the pregnant hay of wild rice stem to grow, before pouring
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at after so that biogas slurry is poured
21cm.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1cm or so, amount of application of nitrogen fertilizer biogas slurry
Soil surface water water level before pouring is 20cm, is then poured.
Summer
After 3 month temperatures go up, sprouting can be grown again on autumn prior year Jiao Jiaodun, plant to be planted height is grown to 35cm,
Time is about mid-March, proceeds by biogas slurry pouring.
(1) seedling fetilizer for tillering irrigation amount：Wild rice stem plant grows to 35cm height, and it is 870mg/L to measure the ammonium nitrogen concentration in biogas slurry,
With the 4th amount of application of nitrogen fertilizer for 11kgN/ mus, biogas slurry irrigation amount is determined according to formula shown in Formulas I：
Determine that the 4th biogas slurry irrigation amount is 8.2t/ mus；
The pouring of the 4th biogas slurry is carried out, biogas slurry is made come appropriate regulation wild rice stem field height of water level according to biogas slurry irrigation amount before pouring
The total height of water level in wild rice stem field is maintained at 15cm or so after pouring.It is determined by formula shown in Formula II and pours preceding field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1.2cm or so, amount of application of nitrogen fertilizer natural pond
Soil surface water water level before liquid pours is 13.8cm, however is poured；
(2) fertile irrigation amount is lifted：May 12, the ammonium nitrogen concentration measured in biogas slurry is 630mg/L, is applied with the 5th nitrogenous fertilizer
Dosage is 9.5kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
Determine that the 5th biogas slurry irrigation amount is 9.8t/ mus；
The 5th biogas slurry is carried out to pour to promote wild rice stem plant strain growth, according to biogas slurry irrigation amount come appropriate regulation wild rice stem before pouring
Field height of water level, the total height of water level in wild rice stem field is maintained at 16cm after so that biogas slurry is poured.It is determined by formula shown in Formula II before pouring
Field water level：
Show that 1 mu of ground biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1.5cm or so, amount of application of nitrogen fertilizer natural pond
Soil surface water water level before liquid pours is 14.5cm, however is poured；
(3) pregnant hay fertilizer irrigation amount：Late May, the ammonium nitrogen concentration measured in biogas slurry is 1050mg/L, is applied with the 6th nitrogenous fertilizer
Dosage is 11kgN/ mus, and biogas slurry irrigation amount is determined according to formula shown in Formulas I：
It determines that the 6th biogas slurry irrigation amount is 6.8t/ mus, carries out the 6th biogas slurry and pour to promote the pregnant hay of summer hay to grow, before pouring
According to biogas slurry irrigation amount come appropriate regulation wild rice stem field height of water level, the total height of water level in wild rice stem field is maintained at 22cm after so that biogas slurry is poured
More than.It is determined by formula shown in Formula II and pours preceding field water level：
According to formula：Biogas slurry irrigation amount ÷ pours wild rice stem field area (unit：m2(the unit of) × 100：Cm), 1 mu of ground is obtained
Biogas slurry pouring makes Soil surface water water level raised height in wild rice stem field be 1cm or so, the Soil surface water water before the pouring of amount of application of nitrogen fertilizer biogas slurry
Position is 21cm, is then poured.
Embodiment 4
150 kilograms of 15-15-15 composite fertilizers and 20 (are applied using 1 method of embodiment per acre with using common fertilizer applying method
Kilogram urea), not using the method for the present invention to apply biogas slurry, (peasant household rule of thumb applies, and first applies 8t/ mus of biogas slurries, and second applies
With 11t/ mus of biogas slurries, third applies 10t/ mus of biogas slurries), it is as follows to pour wild rice stem scheme works comparing result：
Yield and plant above ground portion dry matter accumulation result are as shown in Figures 2 and 3, wherein Fig. 2 is under different disposal method
Water Bamboo Yield comparing result figure, Fig. 3 is that wild rice stem plant above ground portion dry matter adds up comparing result figure under different disposal method.
From Figure 2 it can be seen that after pouring wild rice stem using this technology irrigation method biogas slurry, Water Bamboo Yield 30.9t/ha.Using normal
Water Bamboo Yield is 29.8t/ha when advising chemical fertilizer application, and being even higher than common fertilizer using this technology method Water Bamboo Yield applies wild rice stem
Yield.However, Water Bamboo Yield is 23.8t/ha when this technology biogas slurry not being used to pour wild rice stem, with use this technology irrigation method phase
Than Water Bamboo Yield declines 23.0% when this technology method not being used to pour.
As seen from Figure 3, after using this technology irrigation method, wild rice stem plant above ground portion dry matter accumulation amount is 11.9t/ha.
Wild rice stem dry matter weight of aerial parts cumulant is 11.4t/ha when common fertilizer is applied.It is accumulated using this technology method dry matter weight of aerial parts
Amount is even higher than common fertilizer application.However, wild rice stem dry matter weight of aerial parts cumulant when this technology biogas slurry not being used to pour wild rice stem
For 9.15t/ha, compared with using this technology irrigation method, wild rice stem dry matter weight of aerial parts cumulant declines 23.1%.
Wild rice stem plant plant height and the long result of blade are as shown in Figure 4 and Figure 5, wherein Fig. 4 is that wild rice stem is planted under different disposal method
Strain plant height comparing result figure, Fig. 5 are the long comparing result figure of wild rice stem plant leaf leaf under different disposal method.
From fig. 4, it can be seen that wild rice stem plant plant height is 198cm when this technology irrigation method biogas slurry being used to pour wild rice stem.It routinizes
Wild rice stem plant plant height is 197cm when fertilizer application.Common fertilizer is even higher than using this technology method wild rice stem plant height and applies wild rice stem strain
It is high.However, wild rice stem plant plant height is 164cm when this technology biogas slurry not being used to pour wild rice stem, with use this technology irrigation method phase
Than wild rice stem plant plant height declines 17.2%.
When as seen from Figure 5, using this technology irrigation method, a length of 3.67cm of wild rice stem plant leaf leaf.Common fertilizer is applied
When wild rice stem plant leaf leaf a length of 3.67cm.Common fertilizer is even higher than using this technology method length of blade and applies wild rice stem plant
Length of blade.However, wild rice stem plant leaf length is 3.22cm when this technology biogas slurry not being used to pour wild rice stem, and using this technology
Irrigation method is compared, and wild rice stem plant leaf leaf length declines 12.3%.
Fig. 6 is ammonium nitrogen comparing result figure in wild rice stem field Soil surface water under different disposal method.As seen from Figure 6, using this skill
Ammonium nitrogen content (NH in the Soil surface water of wild rice stem field when second day behind art irrigation method biogas slurry pouring wild rice stem field4 +- N) it is respectively 121mg/
L, hence it is evident that less than NH in wild rice stem field Soil surface water when this technology biogas slurry not being used to pour wild rice stem4 +N content (203mg/L).Therefore, no
Using NH in Soil surface water when this technology method4 +N content is high, due to that can aggravate week when rainfall or mismanagement generation runoff event
Turn water body environment and endangers risk.In addition, also increasing ammonia (NH3) volatile quantity.(note：NH in Soil surface water behind biogas slurry pouring wild rice stem field4 +N content uses chemical fertilizer (such as urea, composite fertilizer etc.) to apply NH in Soil surface water higher than only4 +N content belongs to normal embodiment).
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. method for determination of amount is poured in double-season early rice biogas slurry sxemiquantitative, include the following steps：
The ammonium nitrogen concentration in biogas slurry is measured, biogas slurry irrigation amount is determined by formula shown in Formulas I：
Wherein, the unit of biogas slurry irrigation amount is t/ mus, and the unit of amount of application of nitrogen fertilizer is kgN/ mus, the ammonium nitrogen concentration in biogas slurry
Unit is mg/L.
2. based on the double-season early rice irrigation method for determining method described in claim 1, include the following steps：
1) late June to early July carries out the transplanting of wild rice stem, and 95% or more plant has young leaves extraction, and companion after the transplanting
When thering is tiller bud to occur, the ammonium nitrogen concentration in biogas slurry is measured, sets the first amount of application of nitrogen fertilizer as 10.5kgN/ mus, according to Formulas I
Shown formula determines the first biogas slurry irrigation amount, carries out the first biogas slurry pouring, and field water level is 15~20cm after pouring；
2) it measures the ammonium nitrogen concentration in biogas slurry mid-September, is that 9kgN/ mus of determining second biogas slurries are poured with the second amount of application of nitrogen fertilizer
Filling amount；The second biogas slurry pouring is carried out, field water level is 15~20cm after pouring；
3) ammonium nitrogen concentration in biogas slurry is measured mid-October, with third amount of application of nitrogen fertilizer for 10.5kgN/ mus of determining third natural ponds
Liquid irrigation amount；Third biogas slurry pouring is carried out, field water level is 20cm or more after pouring；
4) second year measures the ammonium nitrogen concentration in biogas slurry, with the 4th amount of application of nitrogen fertilizer when wild rice stem plant grows to 33~37cm
For 11kgN/ mus of determining 4th biogas slurry irrigation amounts；The pouring of the 4th biogas slurry is carried out, field water level is 13~17cm after pouring；
5) ammonium nitrogen concentration in biogas slurry is measured mid-May, with the 5th amount of application of nitrogen fertilizer for 9.5kgN/ mus of determining 5th biogas slurries
Irrigation amount；The pouring of the 5th biogas slurry is carried out, field water level is 15~20cm after pouring；
6) late May to early June measures the ammonium nitrogen concentration in biogas slurry, with the 6th amount of application of nitrogen fertilizer for N/ mus of determinations of 11kg
6th biogas slurry irrigation amount；The pouring of the 6th biogas slurry is carried out, field water level is 20cm or more after pouring.
3. double-season early rice irrigation method according to claim 2, which is characterized in that after 25~35d of the step 1) transplanting
Carry out the first biogas slurry pouring.
4. double-season early rice irrigation method according to claim 2, which is characterized in that the step 4) is in late March to April
The first tenday period of a month carry out the 4th biogas slurry and pour.
5. double-season early rice irrigation method according to claim 2, which is characterized in that further include before each biogas slurry pouring, it is right
Field ridge, which consolidate, increases processing.
6. double-season early rice irrigation method according to claim 5, which is characterized in that the height of the ridge be 35cm with
On.
7. double-season early rice irrigation method according to claim 2, which is characterized in that also wrapped when wild rice stem upgrowth situation difference
It includes：Supplement N P and K individual event mineral fertilizer or nitrogen-phosphorus-potassium compound fertilizer.
8. double-season early rice irrigation method according to claim 2, which is characterized in that when each biogas slurry is poured, biogas slurry is not right
Quasi- wild rice stem plant is poured.
9. double-season early rice irrigation method according to claim 2, which is characterized in that before biogas slurry is poured, shown in Formula II
Formula, which determines, pours preceding field water level：
Wherein, the unit for pouring preceding field water level is cm/ mus, and the unit of biogas slurry irrigation amount is t/ mus.
10. double-season early rice irrigation method according to claim 2, which is characterized in that the Transplanting Density of the wild rice stem is
1500~1600 plants/acre, the line-spacing of the wild rice stem is 80~100cm, and the spacing in the rows of the wild rice stem is 45~50cm.
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| CN113207582A (en) * | 2021-03-22 | 2021-08-06 | 金华市农业科学研究院(浙江省农业机械研究院) | Method for purifying biogas slurry by interplanting cane shoots and water spinach |
| CN113615505A (en) * | 2021-09-16 | 2021-11-09 | 浙江天地环保科技股份有限公司 | Method for planting single-cropping water bamboo by applying biogas slurry instead of chemical fertilizer |
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| CN113207582B (en) * | 2021-03-22 | 2022-07-26 | 金华市农业科学研究院(浙江省农业机械研究院) | Method for purifying biogas slurry by interplanting cane shoots and water spinach |
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| CN113615505A (en) * | 2021-09-16 | 2021-11-09 | 浙江天地环保科技股份有限公司 | Method for planting single-cropping water bamboo by applying biogas slurry instead of chemical fertilizer |
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