CN106717415A - The fertilizing method that a kind of yangtse-huaihe region sweet potato High Efficient nitrogen is utilized - Google Patents
The fertilizing method that a kind of yangtse-huaihe region sweet potato High Efficient nitrogen is utilized Download PDFInfo
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Fertilizing method is utilized the invention provides a kind of yangtse-huaihe region sweet potato High Efficient nitrogen, it is characterised in that specifically include following steps：(1) rational application of fertilizers：Before plot soil ploughs ridging, inorganic fertilizer is applied, spread fertilizer over the fields with arable land, be every mu of 4.0kgN of administration 1.3,5 6kg P using standard2O5With 8 12kg K2O；(2) fertilising in good time：After sweet potato transplants 30 35 days, spreaded manuer in holes 4.0kg/ mus of nitrogenous fertilizer 1.4 with seeder, add the total amount of nitrogen control of base manure at 5.3kg/ mus.The present invention is by rational nitrogenous fertilizer sowing amount, Operational of Nitrogen Among ratio, dressing time and position of applying fertilizer to improve the administrative skill and its points for attention of sweet potato fertilizer utilization efficiency, amount of application of nitrogen fertilizer is larger during overcoming existing sweet potato cultivation, and nitrogenous fertilizer plant recovery of nutrient is relatively low, overground part easily prosperous length, beet yield and the relatively low shortcoming and defect of economic benefit.The method can effectively improve fertilizer utilization efficiency, while preserving the ecological environment, reduce sweet potato production cost, improve productivity effect.
Description
Technical field
The present invention relates to arable farming field, the fertilizing method that specially a kind of yangtse-huaihe region sweet potato High Efficient nitrogen is utilized.
Background technology
China is sweet potato producing country maximum in the world, and long-term sweet potato cultivated area is the hm of 450-500 ten thousand2, account for China and plough
The 4.2% of the ground gross area.Nutrient sweet potato value is high, is the anti-cancer health-care food of high-quality.In recent years, with people's living standard
Improve, the health-care effect of sweet potato is extremely paid attention to, sweet potato demand is presented rigidity and increases, and planting benefit is progressively highlighted.Nitrogen is sweet potato
Grow necessary macronutrient, and nitrogen nutrition is closely related with growth of sweet potato and yield composition.It is many in China
In the sweet potato produce reality in place, the Rational Application problem of nitrogenous fertilizer is not paid attention to fully, causes yield and utilization rate of fertilizer
It is not high.The amount of application of nitrogen fertilizer of many regional peasant habits of China is 90-200kg hm-2, reach as high as 300kg hm-2.Nitrogenous fertilizer mistake
Amount is excessive using the easily prosperous length of induction fertility early stage overground part, colony, causes colony's ventilation and penetrating light poor, and invalid Dry Matter Production increases
Many, photosynthate is conveyed to underground part and reduced, and beet yield declines.Excessive nitrogenous fertilizer input not only causes utilization rate of nitrogen fertilizer low, and
And the serious performance for limiting yield of sweet potato potentiality.It is of specific interest to be, in existing technology, planted for sweet potato
The mode of applied nitrogen in journey, the fertilization mode of general selection is generally the pattern of " bombards ", i.e., direct one in sweet potato planting
The bottom application of secondary property, no longer topdresses；This pattern is although time saving and energy saving, but is the drawbacks of which, and nitrogen manure heavy dressing is sweet
Potato gives birth to early stage, and sweet potato can be caused to give birth to, and early stage overground part prosperous length, colony be excessive, photosynthate is conveyed to underground part and reduced, after
Phase easy early ageing, reduces yield of sweet potato；Sweet potato is constantly in seedling stage within this period, and root system is weaker, and overground part is slow-growing, supports
Divide demand low.Yangtse-huaihe region annual mid-June to July is upper, early summer in the middle ten days on the occasion of plum rain season, prolonged continuous rainfall,
Relative humidity is big, and the sunshine-duration is short.With reference to the climatic characteristic of yangtse-huaihe region, the nitrogenous fertilizer being now manured into soil as seed manure is by rain
Largely lost after the leaching loss of water and denitrification, not only increase the production cost of peasant and cause underground drinking water source
Nitrate nitrogen, nitrite nitrogen pollution.Therefore, nitrogenous fertilizer input quantity is controlled, fertilization mode is improved, it is improved product to greatest extent
Amount, the negative effect for reducing nitrogenous fertilizer, it has also become problem demanding prompt solution in sweet potato production.
The content of the invention
The technical problem to be solved in the present invention is that amount of application of nitrogen fertilizer is larger during overcoming existing sweet potato cultivation, and nitrogenous fertilizer is supported
Point utilization rate is relatively low, overground part easily prosperous length, beet yield and the relatively low shortcoming and defect of economic benefit.The purpose is to provide one
Plant yangtse-huaihe region sweet potato High Efficient nitrogen fertilizing method and cultural method.
The present invention solves technical problem and adopts the following technical scheme that：
A kind of yangtse-huaihe region sweet potato High Efficient nitrogen utilizes fertilizing method, and its feature is to specifically include following steps：
(1) rational application of fertilizers：Before plot soil ploughs ridging, inorganic fertilizer is applied, spread fertilizer over the fields with arable land, being every mu using standard applies
With 1.3-4.0kgN, 5-6kg P2O5With 8-12kg K2O；
(2) fertilising in good time：After sweet potato is transplanted 30-35 days, spreaded manuer in holes nitrogenous fertilizer 1.4-4.0kg/ mus with seeder, add base manure
Total amount of nitrogen control is at 5.3kg/ mus.
Further, the step (2) topdresses position between 2 plants of sweet potato strains on ridge, to be spreaded manuer in holes at the 10cm of root, and fertilising is deep
It is 8-10cm to spend.
Further, fertilization time is late July in the in good time fertilising step.
Cultural method is utilized present invention simultaneously provides a kind of yangtse-huaihe region sweet potato High Efficient nitrogen, its feature is, including such as
Upper described fertilizing method, in the cultural method, also including Fruit variety, the kind is selected from Xu-shu No.22, business's potato 19, Anhui and revives
Any one in 61.
Further, the cultural method also includes rational close planting, when the rational close planting refers to that potato seedling growth is planted, spacing in the rows control
In 18-23cm, planting density is 3000-3700 plants/acre.
Further, when the kind is business's potato 19, planting density is 3500 plants/acre, when the kind is Xu-shu No.22, plantation
Density is 3300 plants/acre；When the kind is Anhui Soviet Union 61, planting density is 3700 plants/acre.
Further, step before institute's cultural method also includes transplanting, that is, soak potato seedling growth base portion 5-8 before transplanting with carbendazim solution
Minute；Then it is configured to mud with imidacloprid, Hostathion, soil, then is planted at once after dipping in seedling root sealing treatment with mud.
Further, in the cultural method, when planting, spread manuer in holes and 15% poison 2kg/ mus of barnyard grass granule with poison；Potato seedling growth is sideling inserted
In burying, at least ensure there is 2-3 internode to be embedded in underground, 5 ± 2cm of transplant depth only stays 3, top expansion leaf, its remaining part
Divide and be wholly embedded into soil together with blade, pour root water, obturaged after cultivation, use soil pressure reality.
Further, sweet potato, if there is prosperous phenomenon long, uses the Prohexadione calcium aqueous solution in later stage production process, carries out blade
Spray.
Compared with the prior art, the present invention has the beneficial effect that：
Yield of sweet potato depends primarily on individual plant knot potato number and single potato weight.There is root system differentiation within 10-20 days after sweet potato growing, it
Indefinite Furcation defects increase thick and gradually expand as root is expanded afterwards, and " individual plant potato number " is basicly stable within 30 days or so.Research has shown that, fit
Spending nitrogen stress is conducive to growth of sweet potato early stage root system to break up to root tuber direction, and it is excessive to growing the root growth of early stage and dividing to apply nitrogen
Change has inhibitory action, and individual plant knot potato number is substantially reduced when causing to harvest.After individual plant knot potato number stabilization, root continued growth is expanded,
Single potato is continuously increased again.The material demand of root continued growth (turning into root tuber) is expanded to meet, it is necessary to ensure the rule of source leaf
Mould and total amount are continuously increased, and to promote source leaf fully to grow to play its Photosynthetic Efficiency.Nitrogen is that influence sweet potato source sink and flux is most heavy
The factor wanted, lift-augmented mechanism is remarkably improved the leaf area index and photosynthetic rate of growth of sweet potato middle and later periods.According to the life of sweet potato
Development characteristicses long and suction nitrogen characteristic, the amount of application of nitrogen fertilizer of control growth early stage, apply nitrogen emphasis in growth medium.Postponing nitrogen is to root
After the completion of system's differentiation (individual plant knot potato number stabilization), can both promote early stage root system to break up knot potato, the plant life of middle and later periods had been can guarantee that again
Nitrogen demand peak long, is conducive to high yield.
The basis that ecoclimate feature and its yield of sweet potato of the inventive method in further investigation China yangtse-huaihe region are formed
On, selected by rational plot, nitrogenous fertilizer sowing amount, time, fertilising position etc. efficiently nitrogen fertilizer applying method are applied, it is effective to protect
Measured the need for having demonstrate,proved growth of sweet potato, and farthest reduce waste, reduce production cost, what is more important is avoided
Pollution of the excessive nitrogenous fertilizer to environment, improves fertilizer utilization efficiency.Rightly avoid yangtse-huaihe region mid-June to July simultaneously
The middle ten days plum rain season rainfall is more, reduces standby time, transhipment distance of the nitrogenous fertilizer in soil, has deadened chemical fertilizer evaporation and has flowed
Lose, amount of application of nitrogen fertilizer is only 80% or so of routine nitrogen fertilizing amount at present.Realize sweet potato nitrogen to deliver on demand, on time, reach
The hight coordinate of nitrogen supply and sweet potato physiological processes is arrived.Chemical nitrogen fertilizer utilization ratio is obviously improved, and effectively alleviates agriculture
Industry is produced and the contradiction between environmental protection, improves grain-production benefit.
Specific embodiment
Explanation is further explained to technical solution of the present invention below by way of specific embodiment.
The present invention provides a kind of yangtse-huaihe region sweet potato High Efficient nitrogen and utilizes fertilizing method, specifically includes following steps：
(1) rational application of fertilizers：Before plot soil ploughs ridging, inorganic fertilizer is applied, spread fertilizer over the fields with arable land, being every mu using standard applies
With 1.3-4.0kgN, 5-6kg P2O5With 8-12kg K2O；
(2) fertilising in good time：After sweet potato is transplanted 30-35 days, spreaded manuer in holes nitrogenous fertilizer 1.4-4.0kg/ mus with seeder, add base manure
Total amount of nitrogen control is at 5.3kg/ mus.
Preferably, the step (2) is topdressed, position is applied fertilizer between 2 plants of sweet potatoes strains on ridge, to be spreaded manuer in holes at the 10cm of root
Depth is 8-10cm.
Further, fertilization time is late July in the in good time fertilising step.
The fertilizing method advantage is embodied in：
A, reduction amount of application of nitrogen fertilizer, using rational dose；
B, according to yield of sweet potato formed feature and uptake characters, the assurance of dressing time node, 30-35 days after transplanting is sweet
The differentiation of potato root system is completed, the period of individual plant knot potato number stabilization, and nitrogenous fertilizer is imposed in this phase and can both promote early stage root system differentiation knot potato, and
The plant strain growth nitrogen demand peak of middle and later periods is can guarantee that, is conducive to high yield.Yangtse-huaihe region mid-June-July is effectively avoided simultaneously
The middle ten days plum rain season rainwater is more, reduces chemical fertilizer evaporation and is lost in, and improves fertilizer utilization efficiency；
C, the method topdressed and position, on ridge between 2 plants of sweet potato strains, spread manuer in holes at the 10cm of root, and fertilization depth is 8-
10cm, is so conducive to root system directly absorbing to nitrogenous fertilizer.
A kind of yangtse-huaihe region sweet potato High Efficient nitrogen is provided below in conjunction with fertilizing method and utilize cultural method, specifically include following
Several steps：
(1) Fruit variety：Select that water-fast fertilizer tolerability is good, dry rate is higher, the more uniform starch type sweet potato variety of potato type；Yangze river and Huai river
Regional establishing in large scale have Xu-shu No.22, business's potato 19, Anhui Soviet Union 61 etc..
(2) selection of land ridging：It is required that draining is unimpeded, table soil loosening, preferably soil layer are deep, raw stubble without sweet potato disease is sandy
Soil, soil ploughs 20-30cm, and rake is thin, fertilising is combined during ridging and is once completed, row spacing 90-100cm, ridge 30-35cm high, ridge
70-80cm wide, plot soil relative water content is not less than 60% during ridging；Preferred 4QL-1 types sweet potato ridging harvests many during ridging
Function machine makees ridge, it is ensured that ridge is straight, and ridge face is flat, and ridge soil pine, the ridge heart is ploughed nothing thoroughly and balked.
(3) rational application of fertilizers：Before plot soil ploughs ridging, plot base applies commodity inorganic fertilizer, is spread fertilizer over the fields with arable land, using mark
Standard is every mu and applies 1.3-4.0kgN, 5-6kg P2O5With 8-12kg K2O。
(4) strong sprout is selected：Using cutting seedlings high, selection seedling age at 30-35 days, a length of 20-25cm of seedling, stem thick 0.5 ±
0.1cm, internode number is saved for 4-6, the potato seedling growth of internode length 4-5cm.Seedling wants that leaf color is dark green, blade is plump, is of moderate size, top-three leaves are neat
It is flat.Best potato seedling growth takes appropriate hardening more than 3 days before cutting seedlings, and to adapt to the environment in extraneous crop field, slow seedling is fast after cultivation.
(5) transplant：Transplanted using oblique cutting method, coordinate root water.Soaked with the carbendazim solution for diluting 1000 times before transplanting
Cutting seedlings base portion high 5-8 minutes, prevents and treats black spot；Then 7.5kg water is added to be dissolved with the imidacloprid 100g of volumetric concentration 70%, plus
Hostathion microcapsule formulations 2.0kg, then add soil to be configured to mud, mud is planted at once after dipping in seedling root sealing treatment, can be effective
Prevention haulm characters.When planting, spread manuer in holes and 15% poison 2kg/ mus of barnyard grass granule with poison, prevent subterranean pest-insect.Sideling inserted when planting
In soil, at least ensure there is 2-3 internode to be embedded in underground, 5 ± 2cm of transplant depth only stays 3, top expansion leaf, remainder
It is wholly embedded into soil together with blade, pours root water, obturaged after cultivation, uses soil pressure reality.
(6) rational close planting：When potato seedling growth is planted, in 18~23cm, planting density is 3000-3700 plants/acre for spacing in the rows control.No
Different with breediness sweet potato planting density, the short climing type of business's potato 19, planting density can be with more slightly higher, up to 3500 plants/acre, Xu's potato
22 preferably 3300 plants/acre, preferably 3700 plants/acre of Anhui Soviet Union 61.
(7) fertilising in good time：30-35 days after sweet potato is transplanted, spreaded manuer in holes nitrogenous fertilizer 1.4-4.0kg/ mus with seeder, convert into urea
3.0-8.5kg/ mus, the total amount of nitrogen control of base manure is added at 5.3kg/ mus.Position topdress between 2 plants of sweet potatoes strains on ridge, apart from root
Spreaded manuer in holes at portion 10cm, fertilization depth is 8-10cm.So be conducive to root system directly absorbing to nitrogenous fertilizer.
(8) mechanical harvest：Field is carried out using sweet potato seedling vine crushing and returning to field machine and kills seedling, cropper carries out brokenly ridge results.It is excellent
4JHSM-900 types sweet potato seedling vine crushing and returning to field machine and the broken ridge of 4QL-1 types sweet potato is selected to excavate and harvest plough.
On the basis of above-mentioned technical proposal, enhance field management, in the event of pest and disease damage, can suitably be applied according to degree
The biological pesticide of high-efficiency low-toxicity low-residual is prevented and treated.Such as the later stage prosperous length Prohexadione calcium aqueous solution, blade spraying is carried out.
Had the advantage that to further illustrate this fertilizing method and the present invention, with reference to specific implementation
Case is illustrated.
Embodiment 1：
2015 years implemented in Hefei City Luyang District Academy of Agri-Science and Technology Anhui Province experimental plot, and there is good irrigation and drainage bar in the plot
Part, sweet potato variety of participating in the experiment is Xu-shu No.22, and cultural method is as described above, wherein, sweet potato is in the seeding nursery of March 20 in 2015, June
Plant to crop field within 18th.Preceding crop is wheat, foundation soil fertility：Organic matter 1.3%, available nitrogen 73.4mg/kg, rapid available phosphorus
26.4mg/kg, available potassium 104.6mg/kg.Every mu is applied 6kg P2O5With 10kg K2O, Base-appling once, nitrogenous fertilizer before transplanting
Set different according to each treatment, amount of application is different with period, fertilizer used is urea, potassium sulfate and calcium superphosphate.It is normal with peasant
Rule Base-appling once nitrogenous fertilizer 100kg hm-2It is control, by amount of nitrogen reduction about 20% to 80kg hm-2, the 35d (blocks after transplanting
Stem forms the phase) different gradient base manure are set：Top-dressing pattern, wherein base manure：Top-dressing pattern is 0：100、25：75、50：
50、75：25、100：0, totally 6 treatment, 3 repetitions, cell is arranged using random district's groups.Fertilizing type is spreaded manuer in holes for seeder, is chased after
Between 2 plants of sweet potatoes strains on ridge, to be spreaded manuer in holes at the 10cm of root, fertilization depth is 8-10cm for fertile position.Use in this experiment
Planting type is made on ridge only, and spacing in the rows is 0.20m, and row spacing is 1.0m, plot area 40m2(5.0×8.0m).July 23 topdressed, and 10
The moon 24 was harvested.
Table 1 is influence of the different Operational of Nitrogen Among ratios for yield of sweet potato and yield forming.As table 1 is visible, nitrogenous fertilizer decrement
Compared using more conventional fertilising by several times and significantly improve yield.Amount of application of nitrogen fertilizer is reduced to 80kg hm-2When, 25% base applies+75%
Impose the lower fresh sweet potato for the treatment of and dry matter yield is highest, volume increase 20.79% and 26.09% more notable than conventional fertilizer application respectively.100%
Base applies treatment fresh sweet potato and the more conventional fertilising underproduction 5.17% and 5.14% respectively of dry matter yield；50% base applies+50% and imposes treatment
Fresh sweet potato and the more conventional fertilising of dry matter yield increase production 16.60% and 19.92% respectively；75% base apply+25% impose treatment fresh sweet potato and
The more conventional fertilising volume increase 11.68% and 13.27% of dry matter yield；100% imposes treatment fresh sweet potato and the more conventional fertilising of dry matter yield
Volume increase 6.59% and 10.34%.Under identical dose, nitrogenous fertilizer gives whole bases to be applied and improves yield, under the conditions of giving,
The individual plant knot potato number of sweet potato and single potato weight are applied compared with base and are improved.
Influence (2015) of the Nitrogen application regime of table 1 to yield of sweet potato and yield forming
Note：Data are 3 repetition average values in table, and different letters represent the significant difference in 5% level in same row.
Embodiment 2：
2016 years implemented in Suzhou City Yongqiao District Suzhou National agricultural science and technology demonstration experimental plot, and sweet potato variety of participating in the experiment is
Xu-shu No.22, cultural method are as described above, wherein, sweet potato is planted to crop field in the seeding nursery of March 18 in 2016, June 19.Before
Stubble crop is wheat, foundation soil fertility：Organic matter 1.5%, available nitrogen 80.1mg/kg, rapid available phosphorus 30.1mg/kg, available potassium
112.3mg/kg.Every mu is applied 6kg P2O5With 10kg K2O, the Base-appling once before transplanting, nitrogenous fertilizer is set not according to each treatment
Together, amount of application is different with period, and fertilizer used is urea, potassium sulfate and calcium superphosphate.With peasant's routine Base-appling once nitrogenous fertilizer
100kg hm-2It is control, by amount of nitrogen reduction about 20% to 80kg hm-2, 35d (tuber initiation stage) sets different after transplanting
Gradient base manure：Top-dressing pattern, wherein base manure：Top-dressing pattern is 0：100、25：75、50：50、75：25、100：0, altogether
6 treatment, 3 repetitions, cell is arranged using random district's groups.Fertilizing type is spreaded manuer in holes for seeder, topdress position on ridge 2 plants it is sweet
Between potato strain, spreaded manuer in holes at the 10cm of root, fertilization depth is 8-10cm.Planting type, strain are made using ridging only in this experiment
Away from being 0.20m, row spacing is 1.0m, plot area 400m2(20.0×20.0m).July 24 topdressed, and November 6 harvested.
As shown in table 2, table 2 is influence of the different Operational of Nitrogen Among ratios for yield of sweet potato and yield forming.As table 2 can
See, amount of application of nitrogen fertilizer is reduced to 80kg hm-2When, 25% base applies+75% and imposes the lower fresh sweet potato for the treatment of and dry matter yield is highest,
Volume increase 25.47% and 29.64% more notable than conventional fertilizer application respectively.100% base applies treatment fresh sweet potato and the more conventional fertilising of dry matter yield
The underproduction 4.34% and 4.10% respectively；50% base apply+50% impose treatment fresh sweet potato and dry matter yield it is more conventional fertilising increase production respectively
20.26% and 22.24%；75% base applies+25% and imposes treatment fresh sweet potato and dry matter yield 12.47% He of more conventional fertilising volume increase
13.85%；100% imposes treatment fresh sweet potato and the more conventional fertilising volume increase 14.26% and 17.95% of dry matter yield.Applied in identical
Under fertilizer amount, nitrogenous fertilizer gives whole bases to be applied and improves yield, and under the conditions of giving, the individual plant knot potato number of sweet potato and single potato weight are compared with base
Apply and be improved.
Influence (2016) of the Nitrogen application regime of table 2 to yield of sweet potato and yield forming
Note：Data are 3 repetition average values in table, and different letters represent the significant difference in 5% level in same row.
The above is only the description to presently preferred embodiments of the present invention, is not to limit the present invention, every in hair
Change, the replacement carried out in bright spirit, improvement belong to the scope of the protection of this reality invention.
Claims (9)
1. a kind of yangtse-huaihe region sweet potato High Efficient nitrogen utilizes fertilizing method, it is characterised in that specifically include following steps：
(1) rational application of fertilizers：Before plot soil ploughs ridging, inorganic fertilizer is applied, spread fertilizer over the fields with arable land, be every mu of administration using standard
1.3-4.0kgN、5-6kg P2O5With 8-12kg K2O；
(2) fertilising in good time：After sweet potato is transplanted 30-35 days, spreaded manuer in holes nitrogenous fertilizer 1.4-4.0kg/ mus with seeder, add base manure and always apply
Nitrogen quantity is controlled at 5.3kg/ mus.
2. a kind of yangtse-huaihe region sweet potato High Efficient nitrogen according to claim 1 utilizes fertilizing method, it is characterised in that described
Step (2) topdresses position between 2 plants of sweet potato strains on ridge, to be spreaded manuer in holes at the 10cm of root, and fertilization depth is 8-10cm.
3. a kind of yangtse-huaihe region sweet potato High Efficient nitrogen according to claim 1 utilizes fertilizing method, it is characterised in that described
Fertilization time is late July in fertilising step in good time.
4. a kind of yangtse-huaihe region sweet potato High Efficient nitrogen utilizes cultural method, it is characterised in that including the fertilising described in claim 1
Method, in the cultural method, also including Fruit variety, the kind be selected from Xu-shu No.22, business's potato 19, Anhui Soviet Union 61 in it is any one
Kind.
5. a kind of yangtse-huaihe region sweet potato High Efficient nitrogen according to claim 4 utilizes cultural method, it is characterised in that also wrap
Rational close planting is included, when the rational close planting refers to that potato seedling growth is planted, spacing in the rows is controlled in 18-23cm, and planting density is 3000-3700
Plant/acre.
6. a kind of yangtse-huaihe region sweet potato High Efficient nitrogen according to claim 5 utilizes cultural method, it is characterised in that described
When kind is business's potato 19, planting density is 3500 plants/acre, and when the kind is Xu-shu No.22, planting density is 3300 plants/acre；Institute
When stating kind for Anhui Soviet Union 61, planting density is 3700 plants/acre.
7. a kind of yangtse-huaihe region sweet potato High Efficient nitrogen according to claim 4 utilizes cultural method, it is characterised in that described
The preceding carbendazim solution of step, i.e. transplanting soaks potato seedling growth base portion 5-8 minutes before cultural method also includes transplanting；Then pyrrole worm is used
Quinoline, Hostathion, soil are configured to mud, then are planted at once after dipping in seedling root sealing treatment with mud.
8. a kind of yangtse-huaihe region sweet potato High Efficient nitrogen according to claim 7 utilizes cultural method, it is characterised in that described
In cultural method, when planting, spread manuer in holes and 15% poison 2kg/ mus of barnyard grass granule with poison；Potato seedling growth is sideling inserted in soil, at least ensures there is 2-3
Individual internode is embedded in underground, and 5 ± 2cm of transplant depth only stays 3, top expansion leaf.Remainder is wholly embedded into soil together with blade
In, root water is poured, obturaged after cultivation, use soil pressure reality.
9. the cultural method that a kind of yangtse-huaihe region sweet potato High Efficient nitrogen according to claim 4 is utilized, it is characterised in that：It is sweet
Potato, if there is prosperous phenomenon long, uses the Prohexadione calcium aqueous solution during late growing stage, carries out blade spraying.
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| CN109804876A (en) * | 2019-03-19 | 2019-05-28 | 云南省农业科学院经济作物研究所 | A kind of big spring sowing potato postponing nitrogen health care yield-increasing cultivation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107663116A (en) * | 2017-11-09 | 2018-02-06 | 肇庆高新区国专科技有限公司 | A kind of sweet potato top dressing fertilizer and topdressing method |
| CN109804876A (en) * | 2019-03-19 | 2019-05-28 | 云南省农业科学院经济作物研究所 | A kind of big spring sowing potato postponing nitrogen health care yield-increasing cultivation method |
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