CN102249819B - Organic-inorganic controlled-release fertilizer special for medlar and preparation method thereof - Google Patents
Organic-inorganic controlled-release fertilizer special for medlar and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an organic-inorganic controlled-release fertilizer special for medlar and a preparation method thereof. The fertilizer comprises the following raw materials: organic fertilizer micro-fertilizer composition, sulfur high molecule polymer coated urea, 5% humic acid coated urea, urea first coating 4% modified epoxy resin coated potassium nitrate, diammonium phosphate and granular potassium sulfate, wherein the organic fertilizer micro-fertilizer composition is prepared by abundantly and evenly mixing a cured organic fertilizer with boric acid and zinc sulfate in a mass ratio of 100:(0.5-1):(1-3) and then pelleting according to the prior art. The organic-inorganic controlled-release fertilizer special for the medlar is completely applied once before the medlar sprouts in spring. The fertilizer provided by the invention is prepared by precise complexing according to the nutrition absorption characteristics of the medlar so that the nutrition release of the fertilizer is identical with the nutrition absorption of the medlar, thereby effectively improving the fertility of soil and the utilization ratio of the fertilizer, and improving the yield and quality of the medlar.
Description
Technical field
The present invention relates to a kind of release and release control fertilizer, particularly be used for matrimony vine special-purpose organic-inorganic release and release control fertilizer and preparation and application, belong to release and release control fertilizer production and applied technical field.
Background technology
Matrimony vine is China's traditional Chinese medicines material, and it contains rich nutrient contents, like multiple amino acids, VITAMINs, protein and a large amount of trace elements of needed by human.Matrimony vine also can be used as the seeds in advance of checking winds and fixing drifting sand, improveing the saltings simultaneously, possesses ecology, the Trinitarian remarkable benefit of economy and society, is particularly suitable for area plantations such as China Ningxia, sweet potato, Inner Mongol, Xinjiang, Qinghai.In the later stage nineties in last century, through extensive introducing culture, China's matrimony vine cultivated area progressively increases, and to have formed be the brand and the cultivation mode of representative with the lycium barbarum.
Matrimony vine is a perennial plant, in the breeding cycle in 1 year, does not have the branch of tangible vegetative growth phase and generative growth phase, and to be that both are overlapping carry out most of time.In general, nitrogen nutrient helps nourishing and growing, and the phosphorus element then promotes to yield positive results.The two quantitative relation must be coordinated, otherwise, any too much or very fewly all can influence output.The fertilizer practice that CN1962566A (CN200610149036.1) discloses four kinds of matrimony vine composite fertilizer specials and four kinds of liquid fertilizers and matched with it.With urea, double superhosphate, vitriolate of tartar is raw material, and four kinds of N, P, K proportioning diverse concentrated type matrimony vine composite fertilizer special and fertilizer practices thereof of using in the different steps of matrimony vine growth fertility are provided; Use this invention, it is big that the individuality of matrimony vine becomes, and soluble solid, total reducing sugar, protein, amino acid, LBP content all rise to some extent.
The chemical fertilizer that present medlar cultivation is used mainly is a quick acting fertilizer, and the back dissolving that is manured into soil is fast, and the nutrient density in the soil is too high in a short time, and particularly nitrogenous fertilizer is all the more so, and this is unfavorable to matrimony vine stable high yield.Current ways of addressing this issue is to increase fertilizer application frequency, reduces each fertilizer amount, and this has brought the problem of two aspects again, the one, and increase peasant's labour intensity; The 2nd, dig the fertilizer of spreading manuer in holes in the season of growth of matrimony vine and will cut off a large amount of root systems, be unfavorable for nutrient absorbing.Using controlled release fertilizer is the effective measure that address this problem.
Matrimony vine produces and had both required output, more should note quality.The rational application of fertilizer is the important factor of regulating yield and quality.It is poor that matrimony vine is planted regional most soil fertility, and part prone soil and salinized soil are arranged.Fertilizer nutrition is complete, has the structure of improving the soil, increases soil fertility, and improves the effect of matrimony vine quality.With the fertile raising that combines to promote better the matrimony vine Fertilization Level of fertilizer and controlled release, increase output.The report that matrimony vine special organic and inorganic special-purpose control-release fertilizer aspect is not arranged up to now, as yet.
Summary of the invention
To the deficiency of prior art, the present invention provides a kind of matrimony vine special organic and inorganic controlled release fertilizer and preparation method thereof.The application of this fertilizer also is provided.
Summary of the invention
The present invention utilizes different controlled release fertilizer accurately composite as raw material, and cooperates with granular organic fertilizer according to nutrition absorption characteristic in the matrimony vine year breeding cycle, can effectively increase soil fertility, and increases matrimony vine output, improves the matrimony vine quality.
Detailed Description Of The Invention
A kind of matrimony vine special organic and inorganic release and release control fertilizer, raw materials quality part is following:
45～55 parts of fertilizer micro-fertilizer compounds,
Sulphur adds 8～12 parts of high molecular polymer coated carbamides,
9～12 parts in 5% humic acid membrane wrapping urea,
10～14 parts in urea undercoat 4% modified epoxy resin integument saltpetre,
11～16 parts of diammonium phosphate,
4～6 parts of granular potassium sulfates.
Said fertilizer micro-fertilizer compound is that the fertilizer that becomes thoroughly decomposed and boric acid, zinc sulfate are made by the prior art granulation after by mass ratio 100: 0.5～1: 1～3 abundant mixings.2～4 millimeters of preferable particle size.
It is to be nuclear core fertilizer with the granular urea that said sulphur adds the high molecular polymer coated carbamide, and spraying inner cladding sulphur film sprays the surrounding layer polymer membrane again and makes earlier; Wherein, It is 20% that inner cladding sulphur mould material accounts for nuclear core fertilizer quality per-cent; The mass percent that polymer membrane accounts for nuclear core fertilizer is 2%, and is preferred, high polymer film-coated dose of mixing that is novolac epoxy and triethylene tetramine with 9: 1 mass ratioes.The preparation method is referring to CN1246265C (200410024050.X) " is the preparation method of the high polymer film-coated controlled release fertilizer of undercoat with sulphur ", and the present invention quotes the full text of this patent document as prior art.Wherein, the preferred granular urea of nuclear core fertilizer urea, 2～3 millimeters of particle diameters.
Said 5% humic acid membrane wrapping urea; It is spray one layer binder outside granular urea; Spray the weathered coal of the air-dry pulverizing of one deck again, solidify the back and repeat said process, reach sticker account for the granular urea quality 1%, weathered coal accounts for 5% humic acid membrane wrapping urea of granular urea quality.Preferably, to be epoxy resin and triethylene tetramine be mixed and made into by 1: 0.10 mass ratio said sticker.
Above-mentioned 5% humic acid membrane wrapping urea is the commercially available prod; Shandong Kingenta Bio-engineering Stock Co., Ltd. is on sale; Also can be by patent document CN100556866C (200810139610.4) disclosed " a kind of humic acid control-releasing fertilizer and preparation method thereof " preparation, the present invention quotes the full text of this patent document as prior art.
Said urea undercoat 4% modified epoxy resin integument saltpetre is to serve as nuclear core fertilizer with particle saltpetre, and the urea undercoat accounts for 5% of nuclear core fertilizer quality, and modified epoxy resin integument layer quality is 4% of core fertilizer quality.
Preferably; The coating agent that said modified epoxy resin integument layer uses prepares by following method: epoxy resin E-44 and polyurethane PU R are mixed and made into modified epoxy with 9: 1 mass ratioes, add 10wt% solidifying agent, 15wt% thinner and 1wt% wilkinite again and be mixed and made into.Wherein said solidifying agent, thinner are selected special preferred consolidation agent T-593, thinner benzyl glycidyl ether by this area is conventional.Referring to CN 1246264C (200410024049.7).
Above-mentioned urea undercoat 4% modified epoxy resin integument saltpetre; Shandong Kingenta Bio-engineering Stock Co., Ltd. is on sale; Also can be by patent document CN 1246264C (200410024049.7) " is the modified epoxy resin integument release and release control fertilizer of undercoat with spraying urea " preparation, the present invention quotes the full text of this patent document as prior art.
Said diammonium phosphate, granular potassium sulfate, the commercially available prod.2～4 millimeters of both preferable particle size.
The said fertilizer that becomes thoroughly decomposed can be that market is buied or prior art in commonly used any.It for example is main raw material heap fermentation fertilizer with the feces of livestock and poultry; Be the fertilizer of main raw material fermentation maturity perhaps with industry byproduct such as Xylitol slag or furfural dregs etc.The fertilizer that becomes thoroughly decomposed should meet the requirement of China's fertilizer industry standard (NY 525-2002), and heavy metal content, roundworm mortality ratio, intestinal bacteria index meet the requirement of GB8172.
The present invention is preferred, and the described fertilizer that becomes thoroughly decomposed is 60～65 parts of crop materials, 15～20 parts of weathered coals, 15～25 parts of natural pond slags, regulates moisture content 55～60% behind the mixing, carries out fermentation maturity by prior art and makes.
In the raw material of the described fertilizer that becomes thoroughly decomposed, stalk can be any or the combination in peanut stalk, soybean stalk, corn straw, the wheat stalk etc., preferred peanut stalk or corn straw; The humic acids content of weathered coal is greater than 65wt%; The natural pond slag is the natural pond slag of normal gas producing after one month preferably, and raw material is not limit (feces of livestock and poultry or stalk are main raw material all can).
According to the present invention, optimized technical scheme is following:
A kind of matrimony vine special organic and inorganic release and release control fertilizer, raw materials quality part is following:
48～52 parts of fertilizer micro-fertilizer compounds,
Sulphur adds 8.5～9.5 parts of high molecular polymer coated carbamides,
10.5～11.5 parts in 5% humic acid membrane wrapping urea,
12.5～13.5 parts in urea undercoat 4% modified epoxy resin integument saltpetre,
11～13 parts of diammonium phosphate,
4.5～5.5 parts of granular potassium sulfates.
The preparation method of a kind of matrimony vine special organic and inorganic of the present invention release and release control fertilizer, step is following:
(1) fertilizer that becomes thoroughly decomposed by prior art for preparing, 60～65 parts of stalks, 15～20 parts of weathered coals, 15～25 parts of natural pond slags are regulated moisture content 55～60% behind the mixing; Before in the fertilizer digest process, turning for the last time; Calculate with the air dried basis of fertilizer, add the boric acid of fertilizer quality 0.5%～1% and 1%～3% zinc sulfate and continued to become thoroughly decomposed 2-4 days, become thoroughly decomposed accomplish after by the prior art granulation; 2～4 millimeters of particle diameters get the fertilizer micro-fertilizer compound;
(2) above-mentioned fertilizer micro-fertilizer compound, sulphur are added high molecular polymer coated carbamide, 5% humic acid membrane wrapping urea, urea undercoat 4% modified epoxy resin integument saltpetre, diammonium phosphate, granular potassium sulfate and put into stirrer by proportioning and stirred 5～8 minutes, fully mixing promptly gets.Then the fertilizer that mixes is measured, packs.
It is 2～3wt% carboxymethyl cellulose aqueous solution that the middle granulation aid of step (1) is selected spray concentration for use.
The application that matrimony vine special organic and inorganic controlled release of the present invention is fertile, this fertilizer are mainly used in regional matrimony vine plantation such as China Ningxia, Gansu, Qinghai, Xinjiang, Inner Mongol.Fertilizing method is, before matrimony vine rudiment in spring, on 20～30 centimetres of circumferential lines of trunk, digs 4～6 fertilising holes, cheats dark 20～30 centimetres, 20～30 centimetres of internal diameters.Fertilizer is disposable all to be used.Preferable methods is that branch applies in the hole for three layers, promptly whenever executes one deck fertilizer, covers 2～3 centimetres of soil.Fertilizer amount, folding synthetic nitrogen, phosphorus, potassium total amount, 300～400 kilograms of per hectares.
Excellent results of the present invention is following:
1, organic-inorganic combines, and increases soil fertility
The sign of fertile soil is not only the nutrient content height, also is embodied in the ability of reconciling water, gas, heat.China matrimony vine main producing region concentrates on areas such as Ningxia, Gansu, Xinjiang, is mostly dust storm, salt affected soil, and soil fertility is poor, and Soil structure is bad, the preserve moisture and fertility ability.Special-purpose control-release fertilizer of the present invention contains abundant organic substance; The required various inorganic nutritive elements of matrimony vine are arranged simultaneously, and being manured into soil both can provide nutrient, also can promote the formation of soil aggregate; Strengthen the ability of soil water-retaining, guarantor's fertilizer and conciliation water, gas, heat, increase soil fertility.
2, the suitable matrimony vine of nutrient proportioning is planted regional soil regime
Compare with China other area, matrimony vine main producing region soil is main with loess, yellow cotton soil, black mature soil, chestnut soil, sandy soil.This type soil calcium carbonate content is many, pH value high (general more than 8), and validity such as nutritive element phosphorus, zinc reduce.Matrimony vine special organic and inorganic release and release control fertilizer of the present invention accurately disposes according to these regional soil characteristics just and forms, and can more reasonably nutrient supply be provided for the matrimony vine growth.
3, fertilizer nutrient discharges and is fit to matrimony vine absorption requirement
Matrimony vine special organic and inorganic release and release control fertilizer of the present invention is to the nutrient absorbing characteristic according to different developmental phases in the matrimony vine year growth cycle; Utilize the multiple controlled release fertilizer of different coated fertilizers, different controlled release phases to do accurately composite forming of raw material; Nutrient discharges and meets matrimony vine absorption requirement; Improve utilization rate of fertilizer, increase matrimony vine output.
4, improve micro-utilising efficiency
Mostly the trace element that adds in the composite controlled release fertilizer of in the past producing is Powdered or crystalloid, too big with the fertile particle size gap of controlled release of 2～4 millimeters particle diameters, is not easy to mix the effect of influence trace element.Fertilizer of the present invention is mixed in trace element in the fertilizer, has both solved the problem of incomplete mixing, has also reduced because of directly contacting the fixed action that causes with soil simultaneously, has improved the utilising efficiency of trace element fertilizer greatly.
Description of drawings
Fig. 1 is China Gansu, 0～20 centimetre of soil nutrient figure of lycium barbarum main producing region soil, and X-coordinate is the nutrient kind, and ordinate zou is nutrient content (unit: organic g/kg, alkali-hydrolyzable nitrogen, rapid available phosphorus, available potassium mg/kg).
Fig. 2 is matrimony vine nutrition absorption figure, and X-coordinate is the nutrient kind, and ordinate zou is the nutrient quantity (unit: kg) that every production 100kg dried fruit of lycium barbarum need absorb.
Embodiment
Below in conjunction with embodiment the present invention is further specified, but be not limited thereto.
Raw material consumption umber among the embodiment is mass parts, and all per-cents are mass percent.Clearly do not limit among the embodiment all by prior art, the method that provides like CN1246265C (200410024050.X), CN100556866C (200810139610.4) and CN 1246264C (200410024049.7).
Weathered coal: Xinjiang is risen and is contained the production of development in science and technology ltd, and humic acids content is greater than 70%.
The natural pond slag: marsh gas power generation factory of dairy industry group of Mongolia Ox natural pond slag, main raw material is a cow dung.
Embodiment 1: a kind of matrimony vine special organic and inorganic release and release control fertilizer, and raw material is formed as follows:
The little fertile elemental composition 50kg of fertilizer,
Sulphur adds high molecular polymer coated carbamide 9kg,
5% humic acid membrane wrapping urea 11kg,
Urea undercoat 4% modified epoxy resin integument saltpetre 13kg,
Diammonium phosphate 12kg,
Granular potassium sulfate 5kg.
The preparation method:
(1) gets and pulverize length, mix, regulate moisture content about 60% less than 0.5 centimetre 20 parts of 65 parts of peanut stalks, weathered coals, 15 parts of natural pond slags; Carry out fermentation maturity by prior art and prepare the fertilizer that becomes thoroughly decomposed; Before in the fertilizer digest process, turning for the last time, the air dried basis calculating with fertilizer evenly adds the boric acid of fertilizer mass parts 0.5%, 3% zinc sulfate; Continued to become thoroughly decomposed 4 days; Become thoroughly decomposed and accomplish the back and spray 2% carboxymethyl cellulose aqueous solution granulation, 2～4 millimeters of particle diameters must organic-microelement composition;
(2) with above-mentioned organic-microelement composition, sulphur add high molecular polymer coated carbamide, 5% humic acid membrane wrapping urea, urea undercoat 4% modified epoxy resin integument saltpetre, diammonium phosphate, granular potassium sulfate to be put into stirrer together by proportioning and stirred 5 minutes, fully mixing promptly gets.Then the fertilizer that mixes is measured, packs.
Embodiment 2: a kind of matrimony vine special organic and inorganic release and release control fertilizer, and raw material is formed as follows:
Fertilizer micro-fertilizer compound 45kg,
Sulphur adds high molecular polymer coated carbamide 12kg,
5% humic acid membrane wrapping urea 10kg,
Urea undercoat 4% modified epoxy resin integument saltpetre 11kg,
Diammonium phosphate 16kg,
Granular potassium sulfate 6kg.
The preparation method is with embodiment 1.
Embodiment 3: a kind of matrimony vine special organic and inorganic release and release control fertilizer, and raw material is formed as follows:
Fertilizer micro-fertilizer compound 55kg,
Sulphur adds high molecular polymer coated carbamide 8kg,
5% humic acid membrane wrapping urea 9kg,
Urea undercoat 4% modified epoxy resin integument saltpetre 10kg,
Diammonium phosphate 14kg,
Granular potassium sulfate 4kg.
The preparation method:
(1) gets and pulverize length, mix, regulate moisture content about 55% less than 0.5 centimetre 15 parts of 60 parts of corn straws, weathered coals, 25 parts of natural pond slags; Carry out fermentation maturity by prior art, before in the fertilizer digest process, turning for the last time, with the air dried basis calculating of fertilizer; Evenly add the boric acid of fertilizer mass parts 1%, 1% zinc sulfate, continued to become thoroughly decomposed 2 days, spray 3% carboxymethyl cellulose aqueous solution granulation after the completion of becoming thoroughly decomposed; 2～4 millimeters of particle diameters get organic-microelement composition;
(2) with above-mentioned organic-microelement composition, sulphur add high molecular polymer coated carbamide, 5% humic acid membrane wrapping urea, urea undercoat 4% modified epoxy resin integument saltpetre, diammonium phosphate, granular potassium sulfate to be put into stirrer together by proportioning and stirred 7 minutes, fully mixing promptly gets.Then the fertilizer that mixes is measured, packs.
Embodiment 4: a kind of matrimony vine special organic and inorganic release and release control fertilizer, and raw materials quality part is following:
Fertilizer micro-fertilizer compound 48kg,
Sulphur adds high molecular polymer coated carbamide 11kg,
5% humic acid membrane wrapping urea 12kg,
Urea undercoat 4% modified epoxy resin integument saltpetre 12kg,
Diammonium phosphate 13kg,
Granular potassium sulfate 4kg.
The preparation method is with embodiment 3.
Comparative Examples: common urea, nitrogen content 46%; Compound potassium sulfate fertilizer, nitrogen, phosphorus, potassium content are respectively 15%, 15%, 15%.
The effect of above embodiment 1～4 and Comparative Examples is following:
Test place: Ningxia autonomous region Zhongning County, Jingyuan County, Gansu Province.
Test period: year October in April, 2010 to 2010.
Supply examination matrimony vine kind: No. 1, peaceful Qi is all used in two places.
Embodiment 1-4 and Comparative Examples fertilizer nitrogen, phosphorus, potassium total nutrient consumption are identical, 350 kilograms of per hectares.Before matrimony vine rudiment in spring, on 25 centimetres of circumferential lines of trunk, dig 5 fertilising holes, cheat dark 28 centimetres, 25 centimetres of diameters.Divide three layers and apply in the hole, promptly whenever execute one deck fertilizer, cover 2 centimetres of soil.By the ordinary method management, all experiment management methods are identical.Effect is seen table 1.
Table 1. is compared the application effect of embodiment 1-4 with Comparative Examples
Claims (2)
1. matrimony vine special organic and inorganic release and release control fertilizer is characterized in that raw materials quality part is following:
45～55 parts of fertilizer micro-fertilizer compounds,
Sulphur adds 8～12 parts of high molecular polymer coated carbamides,
9～12 parts in 5% humic acid membrane wrapping urea,
10～14 parts in urea undercoat 4% modified epoxy resin integument saltpetre,
11～16 parts of diammonium phosphate,
4～6 parts of granular potassium sulfates;
Said fertilizer micro-fertilizer compound is that the fertilizer that becomes thoroughly decomposed and boric acid, zinc sulfate are made by the prior art granulation after by mass ratio 100: 0.5～1: 1～3 abundant mixings;
It is to be nuclear core fertilizer with the granular urea that said sulphur adds the high molecular polymer coated carbamide, and it is 20% that inner cladding sulphur mould material accounts for nuclear core fertilizer quality per-cent, and the mass percent that the surrounding layer polymer membrane accounts for nuclear core fertilizer is 2%;
Said 5% humic acid membrane wrapping urea; It is spray one layer binder outside granular urea; Spray the weathered coal of the air-dry pulverizing of one deck again, solidify the back and repeat said process, reach sticker account for the granular urea quality 1%, weathered coal accounts for 5% humic acid membrane wrapping urea of granular urea quality;
Said urea undercoat 4% modified epoxy resin integument saltpetre is to serve as nuclear core fertilizer with particle saltpetre, and the urea undercoat accounts for 5% of nuclear core fertilizer quality, and modified epoxy resin integument layer quality is 4% of core fertilizer quality.
2. matrimony vine special organic and inorganic release and release control fertilizer as claimed in claim 1 is characterized in that raw materials quality part is following:
48～52 parts of fertilizer micro-fertilizer compounds,
Sulphur adds 8.5～9.5 parts of high molecular polymer coated carbamides,
10.5～11.5 parts in 5% humic acid membrane wrapping urea,
12.5～13.5 parts in urea undercoat 4% modified epoxy resin integument saltpetre,
11～13 parts of diammonium phosphate,
4.5～5.5 parts of granular potassium sulfates.
3, according to claim 1 or claim 2 matrimony vine special organic and inorganic release and release control fertilizer; It is characterized in that the described fertilizer that becomes thoroughly decomposed is 60～65 parts of stalks, 15～20 parts of weathered coals, 15～25 parts of natural pond slags; Regulate moisture content 55～60% behind the mixing, carry out fermentation maturity by prior art and make.
4, matrimony vine special organic and inorganic release and release control fertilizer as claimed in claim 3 is characterized in that in the raw material of the described fertilizer that becomes thoroughly decomposed, and stalk is any or the combination in peanut stalk, soybean stalk, corn straw or the wheat stalk.
5, matrimony vine special organic and inorganic release and release control fertilizer as claimed in claim 3 is characterized in that in the raw material of the described fertilizer that becomes thoroughly decomposed, and the humic acids content of weathered coal is greater than 65wt%.
6, like the preparation method of each described matrimony vine special organic and inorganic release and release control fertilizer of claim 1～5, step is following:
(1) fertilizer that becomes thoroughly decomposed by prior art for preparing, 60～65 parts of stalks, 15～20 parts of weathered coals, 15～25 parts of natural pond slags are regulated moisture content 55～60% behind the mixing; Before in the fertilizer digest process, turning for the last time; Calculate with the air dried basis of fertilizer, add the boric acid of fertilizer quality 0.5%～1% and 1%～3% zinc sulfate and continued to become thoroughly decomposed 2-4 days, become thoroughly decomposed accomplish after by the prior art granulation; 2 ~ 4 millimeters of particle diameters get the fertilizer micro-fertilizer compound;
(2) above-mentioned fertilizer micro-fertilizer compound, sulphur are added high molecular polymer coated carbamide, 5% humic acid membrane wrapping urea, urea undercoat 4% modified epoxy resin integument saltpetre, diammonium phosphate, granular potassium sulfate and put into stirrer by proportioning and stirred 5～8 minutes, fully mixing promptly gets; Then the fertilizer that mixes is measured, packs.
7, like the fertile application of each described matrimony vine special organic and inorganic controlled release of claim 1～5; It is characterized in that fertilizing method is; Before matrimony vine rudiment in spring, on 20～30 centimetres of circumferential lines of trunk, dig 4～6 fertilising holes, cheat dark 20～30 centimetres, 20～30 centimetres of internal diameters; Fertilizer is disposable all to be used.
8, the fertile application of matrimony vine special organic and inorganic controlled release as claimed in claim 7 is characterized in that fertilizing method is that branch applies in the hole for three layers, promptly whenever executes one deck fertilizer, covers 2～3 centimetres of soil.
9, the fertile application of matrimony vine special organic and inorganic controlled release as claimed in claim 7 is characterized in that fertilizer amount folding synthetic nitrogen, phosphorus, potassium total amount, 300～400 kilograms of per hectares.
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| CN102557840B (en) * | 2011-12-14 | 2013-02-06 | 菏泽金正大生态工程有限公司 | Compound sustained-release urea special for crops in high-temperature and rainy areas and preparation method thereof |
| CN102515966B (en) * | 2011-12-30 | 2013-08-28 | 辽宁方兴绿色产业集团有机肥有限公司 | Special fertilizer for hazelnut |
| CN104844368B (en) * | 2015-05-20 | 2018-03-09 | 广西贵港市丰收肥业有限公司 | A kind of manufacture craft of banana fertilizer |
| CN107285846A (en) * | 2016-04-13 | 2017-10-24 | 西北农林科技大学 | A kind of biogas residue-charcoal compoiste fertilizer and preparation method thereof |
| CN107903135A (en) * | 2017-11-28 | 2018-04-13 | 刘伟 | A kind of salt-soda soil improvement of special acidic fertilizier |
| CN108947726A (en) * | 2018-07-27 | 2018-12-07 | 山东省农业科学院生物技术研究中心 | Fertilizer special for peanuts and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962566A (en) * | 2006-11-18 | 2007-05-16 | 周学义 | Dedicated composite fertilizer, microfertilizer for medlar and its application method |
| CN101928189A (en) * | 2010-08-27 | 2010-12-29 | 菏泽金正大生态工程有限公司 | Sustained-release fertilizer for nursery stocks in landscaping and preparation and application |
| CN101973802A (en) * | 2010-09-29 | 2011-02-16 | 菏泽金正大生态工程有限公司 | Nutrition package feed of deciduous fruit trees, preparation and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962566A (en) * | 2006-11-18 | 2007-05-16 | 周学义 | Dedicated composite fertilizer, microfertilizer for medlar and its application method |
| CN101928189A (en) * | 2010-08-27 | 2010-12-29 | 菏泽金正大生态工程有限公司 | Sustained-release fertilizer for nursery stocks in landscaping and preparation and application |
| CN101973802A (en) * | 2010-09-29 | 2011-02-16 | 菏泽金正大生态工程有限公司 | Nutrition package feed of deciduous fruit trees, preparation and application thereof |
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