CN103044111A - Special fertilizer for drip irrigation of asparagus and preparation and fertilization methods of fertilizer - Google Patents
Special fertilizer for drip irrigation of asparagus and preparation and fertilization methods of fertilizer Download PDFInfo
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- CN103044111A CN103044111A CN2012105273241A CN201210527324A CN103044111A CN 103044111 A CN103044111 A CN 103044111A CN 2012105273241 A CN2012105273241 A CN 2012105273241A CN 201210527324 A CN201210527324 A CN 201210527324A CN 103044111 A CN103044111 A CN 103044111A
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Abstract
The invention provides a special fertilizer for drip irrigation of asparagus and preparation and fertilization methods of the fertilizer. The special fertilizer for the drip irrigation of the asparagus is composed of a special fertilizer for the harvest period, a special fertilizer for the growing period of mother stalks and a special fertilizer for the nutrient accumulation period, wherein the special fertilizer for the harvest period comprises the following components in parts by weight: 380-396 parts of potassium nitrate, 165-182 parts of monoammonium phosphate, 420-440 parts of urea, 2-3 parts of EDTA chelated calcium, 1-2 parts of EDTA chelated ferrous, 0.03-0.05 part of sodium molybdate, 1-2 parts of EDTA chelated manganese, 0.5-1 part of EDTA chelated zinc, 0.1-0.3 part of EDTA chelated copper and 1-1.5 parts of boric acid. According to the special fertilizer for the drip irrigation of the asparagus, different formulations are adopted aiming at different growing periods, so that the special fertilizer is more targeted and more obvious in fertilizer effect, reasonable and comprehensive in proportioning of nutrient elements, stable in quality, good in water-solubility, and very suitable for drip irrigation; meanwhile, the fertilizer is saved, and the problem of soil environment pollution caused by excess fertilization and unreasonable fertilization is avoided.
Description
Technical field
The invention belongs to the agrochemical technical field, relate to a kind of asparagus drip irrigation special fertilizer and preparation and application process.
Background technology
Asparagus is a kind of perennial root herbaceous plant, and once cultivation is benefited for many years, and take the tender stem of Shiqi as main, the asparagus spear quality is fine and smooth, and fiber softening is good to eat, and unique fragrant local flavor is arranged, and is a kind of high-grade nutritive health-care vegetable.The planting area of China asparagus is mainly in middle part and south, but because southern rainwater is many, disease is serious, affect the yield and quality of asparagus, so planting area is moved northward progressively.Northern area photo-thermal aboundresources, but water resources lacks, northern area begins to adopt drip irrigation facility plantation asparagus in recent years, the utilization ratio of water is improved greatly, using simultaneously drip irrigation also to solve broad irrigation easily causes field ponding and causes disease and problem that the asparagus field is difficult to topdress, but because drip irrigation plantation asparagus ground zero, any fertilizer is not known to use by many plantations peasant household in drip irrigation, the conventional fertilizer of the use poorly water-soluble that has, often cause water dropper on drip irrigation belt to stop up, have a strong impact on the normal use of drip irrigation; What have causes between nutritive element chemical reaction occuring in the fertilizer and reduces fertilizer efficiency the little fertilizer of ionic state and phosphate fertilizer are simple blended together; Although some water soluble fertilizers are used in buying of having, because the nutritive element proportioning in the fertilizer does not meet the fertile requirement of the need of asparagus, specific aim is not strong, causes the fertilizer waste, also makes simultaneously the trophic level of asparagus unbalance, affects the yield and quality of asparagus.
Bring into play the yield potential of drip irrigation plantation asparagus, the real water-fertilizer integral of realizing, reach the target of water saving, joint fertilizer and maximum production, just must according to the regulation of fertilizer requirement of asparagus different growing, be configured to the dedicated fertilizer that nutritive element reasonable ratio, stable in properties, good water solubility and suitable drip irrigation system use.
Summary of the invention
The object of the present invention is to provide a kind of asparagus drip irrigation special fertilizer, with solve present stage asparagus drip irrigation plantation with fertile blindly, problem that the fertilizer specific aim is not strong.
Another object of the present invention is to provide the preparation method of above-mentioned asparagus drip irrigation special fertilizer.
A further object of the present invention is to provide the application process of above-mentioned asparagus drip irrigation special fertilizer.
For this reason, the present invention adopts following technical scheme:
A kind of asparagus drip irrigation special fertilizer consists of by adopting bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer, wherein:
The described bamboo shoot phase special fertilizer of adopting is mixed by the raw material by following weight part proportioning:
380～396 parts in saltpetre, 165～182 parts of monoammonium phosphates, 420～440 parts in urea, 2～3 parts of EDTA chelating calcium, 1～2 part of EDTA chelated iron, 0.03～0.05 part of Sodium orthomolybdate, 1～2 part of EDTA Chelated Manganese, 0.5～1 part of EDTA chelated zinc, 0.1～0.3 part of EDTA chelated copper, 1～1.5 part of boric acid;
Described female stem special fertilizer in vegetative period is mixed by the raw material by following weight part proportioning:
405～420 parts in saltpetre, 235～245 parts of monoammonium phosphates, 326～340 parts in urea, 7～8 parts of EDTA chelating calcium, 2～3 parts of EDTA chelated irons, 0.06～0.10 part of Sodium orthomolybdate, 1～2 part of EDTA Chelated Manganese, 0.5～1 part of EDTA chelated zinc, 0.2～0.4 part of EDTA chelated copper, 2～3 parts of boric acid;
Described nutrient accumulation phase special fertilizer is mixed by the raw material by following weight part proportioning:
420～432 parts in saltpetre, 300～310 parts of monoammonium phosphates, 250～265 parts in urea, 4～5 parts of EDTA chelating calcium, 2～4 parts of EDTA chelated irons, 0.06～0.08 part of Sodium orthomolybdate, 1～2 part of EDTA Chelated Manganese, 0.5～1 part of EDTA chelated zinc, 0.2～0.4 part of EDTA chelated copper, 1～2 part of boric acid.
Further, described saltpetre and monoammonium phosphate are foreign matter content less than 2% industrial raw material.
A kind of preparation method of described asparagus drip irrigation special fertilizer, wherein, described preparation process of adopting bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer is identical, detailed process is as follows: first urea being pulverized is 10～20 purpose powder, by corresponding weight part monoammonium phosphate, EDTA chelating calcium, EDTA chelated iron, Sodium orthomolybdate, EDTA Chelated Manganese, EDTA chelated zinc, EDTA chelated copper are fully mixed with the urea of pulverizing again, the last saltpetre that adds again corresponding weight part mixes, and gets product.
A kind of fertilizing method of described asparagus drip irrigation special fertilizer by every mu of rate of fertilizer application, in 4～June, is used in conjunction with drip irrigation and to be adopted bamboo shoot phase special fertilizer 10～12kg; In 6～August, use female stem special fertilizer in vegetative period 18～20kg in conjunction with drip irrigation; In 9～October, use nutrient accumulation phase special fertilizer 8～10kg in conjunction with drip irrigation.
Further, will adopt special-purpose nutriment in a fertilizer of bamboo shoot phase and use for 4～6 times, administration interval is 10～12 days; Female stem special-purpose nutriment in a fertilizer in vegetative period is used for 6～8 times, and administration interval is 8～10 days; Special-purpose nutriment in a fertilizer of nutrient accumulation phase is used for 3～5 times, and administration interval is 10～12 days.
Be different from conventional asparagus with fertile, drip irrigation special fertilizer of the present invention is according to different to all kinds of nutrient uptakes and ratio of each stage in the asparagus Annual growth cycle, dispose the combination formula of the bamboo shoot phase of adopting, female stem vegetative period and nutrient accumulation phase three different stepss, realized more accurately the rational application of fertilizers technology.Especially, the ratio of required nitrogen, phosphorus, three kinds of macroelement of potassium is about 11 ︰, 7 ︰ 9 in the asparagus growth and development process, rate of fertilizer application accounts for about 30% of total fertilization amount during adopting bamboo shoot, female stem rate of fertilizer application in vegetative period accounts for about 45% of total fertilization amount, nutrient accumulation phase rate of fertilizer application accounts for about 25% of total fertilization amount, and special fertilizer formula of the present invention and application process namely need fertile characteristic to set according to above asparagus.
Wherein, it is larger to the absorbed dose of nitrogen and potassium to adopt the bamboo shoot phase, less to the absorbed dose of phosphorus; Female stem is all very high to the absorbed dose of each dvielement vegetative period, particularly the absorbed dose of calcium is significantly increased; The nutrient accumulation phase is larger to the absorbed dose of phosphorus, potassium, to the absorbed dose less of nitrogen.Therefore in formulating of recipe of the present invention, adopt bamboo shoot phase special fertilizer and adopt high nitrogen, low-phosphorous, middle potassium prescription, female stem special fertilizer in vegetative period adopts high nitrogen, middle phosphorus, high potassium prescription, nitrogen, high phosphorus, high potassium prescription during nutrient accumulation phase special fertilizer adopts, in every kind of prescription, also add simultaneously asparagus and grown micro-ly in required calcium, iron, manganese, zinc, boron, copper, the molybdenum etc., especially in female stem prescription in vegetative period, strengthened the content of calcium.
This drip irrigation special fertilizer is very easy to use, and each growth period has special-purpose fertilizer, does not have the trouble with other fertilizer (such as urea) adjustment nitrogen phosphorus potassium proportioning.In addition, this drip irrigation special fertilizer nutrient is comprehensive, good water solubility, stable in properties is slightly acidic, and all nutrients are the quick-acting nutrient, nitric nitrogen in the nitrogen, ammonium nitrogen, amidonitrogen ratio are appropriate, trace element all uses chelating attitude simple substance fertile, can be absorbed by crops rapidly after using, and remarkable to improving Yield of Asparagus and quality effect.Again, raw materials used foreign matter content is little in this drip irrigation special fertilizer configuration, good water solubility, and dissolution rate is fast, without residue, can blocking dropping head in the drip irrigation process, easy to use.
In sum, beneficial effect of the present invention is: adopt different ingredients for the asparagus different growing stages, specific aim is stronger, and fertilizer efficiency is more obvious; Fertilizer nutritive element reasonable ratio, comprehensive nutrition, stable in properties, good water solubility are suitable for drip irrigation and use very much; Also played simultaneously the problem of saving fertilizer, avoiding excessive fertilization and unreasonable fertilising that edatope is polluted; Application process is simple and easy to grasp, and can realize the maximum using of fertilizer efficiency.
Embodiment
The present invention is described in further detail below by specific embodiment.
Embodiment 1
The asparagus drip irrigation special fertilizer consists of by adopting bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer.Wherein,
The raw material of adopting bamboo shoot phase special fertilizer consists of (by weight): 380 parts in saltpetre, 172 parts of monoammonium phosphates, 440 parts in urea, 2.0 parts of EDTA chelating calcium, 2.0 parts of EDTA chelated irons, 0.03 part of Sodium orthomolybdate, 2.0 parts of EDTA Chelated Manganeses, 0.5 part of EDTA chelated zinc, 0.2 part of EDTA chelated copper, 1.27 parts of boric acid;
The raw material of female stem special fertilizer in vegetative period consists of (by weight): 405 parts in saltpetre, 241 parts of monoammonium phosphates, 340 parts in urea, 7.0 parts of EDTA chelating calcium, 2.6 parts of EDTA chelated irons, 0.08 part of Sodium orthomolybdate, 1.0 parts of EDTA Chelated Manganeses, 0.72 part of EDTA chelated zinc, 0.2 part of EDTA chelated copper, 2.4 parts of boric acid;
The nutrient accumulation phase raw material of special fertilizer consists of (by weight): 420 parts in saltpetre, 305 parts of monoammonium phosphates, 265 parts in urea, 4.0 parts of EDTA chelating calcium, 2.52 parts of EDTA chelated irons, 0.08 part of Sodium orthomolybdate, 1.0 parts of EDTA Chelated Manganeses, 1.0 parts of EDTA chelated zincs, 0.4 part of EDTA chelated copper, 1.0 parts of boric acid.
The preparation process of adopting bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer is identical, detailed process is as follows: first urea being pulverized is that granularity is at 10～20 purpose powder, again by corresponding weight part with monoammonium phosphate, EDTA chelating calcium, EDTA chelated iron, Sodium orthomolybdate, EDTA Chelated Manganese, EDTA chelated zinc, EDTA chelated copper and the urea after pulverizing fully mix, the last saltpetre that adds again corresponding weight part mixes, and gets product.
The asparagus drip irrigation special fertilizer that present embodiment makes, as follows fertilising (by every mu of rate of fertilizer application): in 4～June, use in conjunction with drip irrigation and to adopt bamboo shoot phase special fertilizer 10kg, and use minutes for 4 times, administration interval is 10 days; In 6～August, to use female stem special fertilizer in vegetative period 19kg, and divide and use for 7 times, administration interval is 10 days; In 9～October, to use nutrient accumulation phase special fertilizer 10kg, and divide and use for 5 times, administration interval is 10 days.
Embodiment 2
The asparagus drip irrigation special fertilizer consists of by adopting bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer.Wherein,
Adopt the raw material (by weight) composed as follows of bamboo shoot phase special fertilizer: 390 parts in saltpetre, 182 parts of monoammonium phosphates, 420 parts in urea, 3.0 parts of EDTA chelating calcium, 1.0 parts of EDTA chelated irons, 0.04 part of Sodium orthomolybdate, 1.46 parts of EDTA Chelated Manganeses, 0.7 part of EDTA chelated zinc, 0. 3 parts of EDTA chelated coppers, 1.5 parts of boric acid;
The raw material (by weight) composed as follows of female stem special fertilizer in vegetative period: 414 parts in saltpetre, 245 parts of monoammonium phosphates, 326 parts in urea, 7.34 parts of EDTA chelating calcium, 3.0 parts of EDTA chelated irons, 0.06 part of Sodium orthomolybdate, 1.3 parts of EDTA Chelated Manganeses, 1.0 parts of EDTA chelated zincs, 0.3 part of EDTA chelated copper, 2.0 parts of boric acid;
The nutrient accumulation phase raw material of special fertilizer (by weight) composed as follows: 427 parts in saltpetre, 310 parts of monoammonium phosphates, 250 parts in urea, 5 parts of EDTA chelating calcium, 4.0 parts of EDTA chelated irons, 0.06 part of Sodium orthomolybdate, 1.54 parts of EDTA Chelated Manganeses, 0.5 part of EDTA chelated zinc, 0.3 part of EDTA chelated copper, 1.6 parts of boric acid.
Adopt the preparation process of bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer with embodiment 1.
The asparagus drip irrigation special fertilizer that present embodiment makes, as follows fertilising (by every mu of rate of fertilizer application): in 4～June, use and adopt bamboo shoot phase special fertilizer 11kg, and divide and use for 5 times, administration interval is 11 days; In 6～August, to use female stem special fertilizer in vegetative period 20kg, and divide and use for 8 times, administration interval is 9 days; In 9～October, to use nutrient accumulation phase special fertilizer 8kg, and divide and use for 3 times, administration interval is 11 days.
Embodiment 3
The asparagus drip irrigation special fertilizer consists of by adopting bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer.Wherein,
The raw material of adopting bamboo shoot phase special fertilizer consists of (by weight): 396 parts in saltpetre, 165 parts of monoammonium phosphates, 432 parts in urea, 2.45 parts of EDTA chelating calcium, 1.4 parts of EDTA chelated irons, 0.05 part of Sodium orthomolybdate, 1.0 parts of EDTA Chelated Manganeses, 1.0 parts of EDTA chelated zincs, 0.1 part of EDTA chelated copper, 1.0 parts of boric acid;
The raw material of female stem special fertilizer in vegetative period consists of (by weight): 420 parts in saltpetre, 235 parts of monoammonium phosphates, 329 parts in urea, 8.0 parts of EDTA chelating calcium, 2.0 parts of EDTA chelated irons, 0.1 part of Sodium orthomolybdate, 2.0 parts of EDTA Chelated Manganeses, 0.5 part of EDTA chelated zinc, 0.4 part of EDTA chelated copper, 3.0 parts of boric acid;
The nutrient accumulation phase raw material of special fertilizer consists of (by weight): 432 parts in saltpetre, 300 parts of monoammonium phosphates, 256.5 parts in urea, 4.43 parts of EDTA chelating calcium, 2.0 parts of EDTA chelated irons, 0.07 part of Sodium orthomolybdate, 2.0 parts of EDTA Chelated Manganeses, 0.8 part of EDTA chelated zinc, 0.2 part of EDTA chelated copper, 2.0 parts of boric acid.
Adopt the preparation process of bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer with embodiment 1.
The asparagus drip irrigation special fertilizer that present embodiment makes, as follows fertilising (by every mu of rate of fertilizer application): in 4～June, use and adopt bamboo shoot phase special fertilizer 12kg, and divide and use for 6 times, administration interval is 12 days; In 6～August, to use female stem special fertilizer in vegetative period 18kg, and divide and use for 6 times, administration interval is 8 days; In 9～October, to use nutrient accumulation phase special fertilizer 9kg, and divide and use for 4 times, administration interval is 12 days.
Manure trial
Carry out field test with drip irrigation special fertilizer and application process that above-mentioned 3 embodiment provide, test is selected in after the field planting asparagus field in 3 years, the test kind is " champion ", if the conventional fertilizer application treatment group is test group in contrast, consider the singularity of drip irrigation ground test, experimental field should select the basically identical significantly piece of adjacent soil fertility condition, each Processing Test ground size is 20 mu, is convenient to the normal operation of drip irrigation system.The test processing arranges as follows:
A, conventional fertilizer application treatment group: water with drip irrigation, topdress as drip irrigation with urea.Specific as follows:
Base manure: 200 kilograms of decomposed manures, 20 kilograms of diammonium phosphate, 20 kilograms of vitriolate of tartar, 5 kilograms in urea impose on apart from asparagus seedling 20～25 ㎝ in June trench digging behind the even blend, in the soil about the degree of depth 10～15 ㎝; The asparagus growing period is used urea 25 ㎏ again in conjunction with drip irrigation, executes altogether 15 times, and each dripping executed 1～2 kilogram in urea.
B, embodiment treatment group: comprise embodiment 1 treatment group, embodiment 2 treatment group, embodiment 3 treatment group.Water with drip irrigation, topdress as drip irrigation with drip irrigation special fertilizer.Specific as follows:
Base manure: 200 kilograms of decomposed manures impose on apart from asparagus seedling 20～25 ㎝ in June trench digging behind the even blend, in the soil about the degree of depth 10～15 ㎝; Asparagus adopts respectively above-mentioned three embodiment to provide in vegetative period fertilizer formula and application process are topdressed.
Other field management measure that above-mentioned several processing mode adopts is all identical.
Output statistics method: experimental field get five sampling points in each processing, each point is got adjacent two row asparagus, length is 50m(area 140 ㎡), carry out mark, finish the output of every day is calculated separately to adopting bamboo shoot from beginning to adopt bamboo shoot, then the ultimate production that adds up to each point converses per mu yield at last.
Consider the growth characteristics of asparagus and with the characteristics of tender stem as results product, test is a test period till adopting bamboo shoot and finish the growth of stepmother's stem and adopt the bamboo shoot end to next year since the previous year.
Test-results sees Table 1:
By as seen from Table 1, the Yield of Asparagus that utilized asparagus drip irrigation special fertilizer that the inventive method provides and fertilizing method Effective Raise, reduced the Fertilizer application amount, the fertilising process science that more becomes has realized effective utilization of fertilizer component.Use asparagus drip irrigation special fertilizer be can calculate from table 1 data and conventional fertilizer volume increase 15%～18%, obvious effect of increasing production used.Take temperature from fertilising, use the asparagus drip irrigation special fertilizer to reduce about fertilizer amount 30 ㎏ than every mu of conventional fertilizer application, can reduce fertilizer amount more than 40%, joint fertilizer efficiency fruit is very obvious.Quality of asparagus obviously improves after using this drip irrigation fertilizer, and percent defective (comprising hollow bamboo shoot and cracking bamboo shoot ratio) is than the remarkable reduction of conventional fertilizer application.In addition, use the disease resistance of asparagus behind this drip irrigation special fertilizer also obviously to improve.
Claims (5)
1. an asparagus drip irrigation special fertilizer is characterized in that, it consists of by adopting bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer, wherein:
The described bamboo shoot phase special fertilizer of adopting is mixed by the raw material by following weight part proportioning:
380～396 parts in saltpetre, 165～182 parts of monoammonium phosphates, 420～440 parts in urea, 2～3 parts of EDTA chelating calcium, 1～2 part of EDTA chelated iron, 0.03～0.05 part of Sodium orthomolybdate, 1～2 part of EDTA Chelated Manganese, 0.5～1 part of EDTA chelated zinc, 0.1～0.3 part of EDTA chelated copper, 1～1.5 part of boric acid;
Described female stem special fertilizer in vegetative period is mixed by the raw material by following weight part proportioning:
405～420 parts in saltpetre, 235～245 parts of monoammonium phosphates, 326～340 parts in urea, 7～8 parts of EDTA chelating calcium, 2～3 parts of EDTA chelated irons, 0.06～0.10 part of Sodium orthomolybdate, 1～2 part of EDTA Chelated Manganese, 0.5～1 part of EDTA chelated zinc, 0.2～0.4 part of EDTA chelated copper, 2～3 parts of boric acid;
Described nutrient accumulation phase special fertilizer is mixed by the raw material by following weight part proportioning:
420～432 parts in saltpetre, 300～310 parts of monoammonium phosphates, 250～265 parts in urea, 4～5 parts of EDTA chelating calcium, 2～4 parts of EDTA chelated irons, 0.06～0.08 part of Sodium orthomolybdate, 1～2 part of EDTA Chelated Manganese, 0.5～1 part of EDTA chelated zinc, 0.2～0.4 part of EDTA chelated copper, 1～2 part of boric acid.
2. a kind of asparagus drip irrigation special fertilizer as claimed in claim 1 is characterized in that, described saltpetre and monoammonium phosphate are foreign matter content less than 2% industrial raw material.
3. the preparation method of asparagus drip irrigation special fertilizer as claimed in claim 1, it is characterized in that, described preparation process of adopting bamboo shoot phase special fertilizer, female stem special fertilizer in vegetative period and nutrient accumulation phase special fertilizer is identical, detailed process is as follows: first urea being pulverized is 10～20 purpose powder, by corresponding weight part monoammonium phosphate, EDTA chelating calcium, EDTA chelated iron, Sodium orthomolybdate, EDTA Chelated Manganese, EDTA chelated zinc, EDTA chelated copper are fully mixed with the urea of pulverizing again, the last saltpetre that adds again corresponding weight part mixes, and gets product.
4. the fertilizing method of asparagus drip irrigation special fertilizer as claimed in claim 1 is characterized in that, by every mu of rate of fertilizer application, in 4～June, uses in conjunction with drip irrigation and to adopt bamboo shoot phase special fertilizer 10～12kg; In 6～August, use female stem special fertilizer in vegetative period 18～20kg in conjunction with drip irrigation; In 9～October, use nutrient accumulation phase special fertilizer 8～10kg in conjunction with drip irrigation.
5. the application process of asparagus drip irrigation special fertilizer as claimed in claim 4 is characterized in that, will adopt special-purpose nutriment in a fertilizer of bamboo shoot phase and use for 4～6 times, and administration interval is 10～12 days; Female stem special-purpose nutriment in a fertilizer in vegetative period is used for 6～8 times, and administration interval is 8～10 days; Special-purpose nutriment in a fertilizer of nutrient accumulation phase is used for 3～5 times, and administration interval is 10～12 days.
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| CN104250173A (en) * | 2014-08-06 | 2014-12-31 | 广州一翔农业技术有限公司 | High phosphorus high calcium liquid compound fertilizer and preparation method and use method thereof |
| CN105399551A (en) * | 2015-12-31 | 2016-03-16 | 史丹利化肥股份有限公司 | Special spray-irrigation and drip-irrigation urea-ammonium nitrate (UAN) liquid fertilizer for crops |
| CN109769446A (en) * | 2019-03-22 | 2019-05-21 | 杭州佳惠农业开发有限公司 | Management method asparagus seed farm fertilising and irrigated |
| CN109769446B (en) * | 2019-03-22 | 2021-06-01 | 杭州佳惠农业开发有限公司 | Management method for fertilization and irrigation of asparagus seed production field |
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| CN103044111B (en) | 2014-12-24 |
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