CN102603432A - Nitrogen fertilizer slow release synergist - Google Patents
Nitrogen fertilizer slow release synergist Download PDFInfo
- Publication number
- CN102603432A CN102603432A CN2012101150223A CN201210115022A CN102603432A CN 102603432 A CN102603432 A CN 102603432A CN 2012101150223 A CN2012101150223 A CN 2012101150223A CN 201210115022 A CN201210115022 A CN 201210115022A CN 102603432 A CN102603432 A CN 102603432A
- Authority
- CN
- China
- Prior art keywords
- fertilizer
- slow release
- nitrogen fertilizer
- nitrogen
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fertilizers (AREA)
Abstract
The invention relates to the technical field of nitrogen fertilizer slow release synergists, and in particular relates to a multifunctional slow release synergist for synergism of nitrogen fertilizers. The nitrogen fertilizer slow release synergist comprises dicyandiamide (DCD), thiourea, vitamin B, polyaspartic acid (PASP), fulvic acid, allantoin, salicylic acid, chitosan and an auxiliary material the weight part ratio of which is (10-20): (10-20): (5-10): (5-10): (20-30): (10-15): (3-5): (2-3): (35-50). When used, the nitrogen fertilizer slow release synergist is added to a common fertilizer and a compound fertilizer in a proportion to be mixed so as to prepare the multifunctional slow release fertilizer. The preparation method of the nitrogen fertilizer slow release synergist is convenient and simple, low in cost and wide and available in the raw materials; the fertilizer effect period of the nitrogen fertilizer or the compound fertilizer with the nitrogen fertilizer slow release synergist can be prolonged to 90-120 days, and the fertilizer utilization rate can be improved by 20-30%; and the nitrogen fertilizer slow release synergist has the effects of increasing yield and income, saving fertilizers, labor and resources, improving soils and protecting ecological environments.
Description
Technical field
The present invention relates to the technical field of nitrogen fertilizer slow-releasing synergistic agent, particularly a kind of sustained-release synergistic agent of multifunctional synergistic nitrogenous fertilizer is applicable to the agricultural and forestry production field.
Background technology
Current, along with increasing gradually of China's population and improving constantly of standard of living, requirement will constantly increase output and improve the quality of products on the agricultural.And China is the production of chemical fertilizer and uses big country, and it is short that traditional nitrogenous fertilizer has the fertilizer efficiency period of easy leaching loss, volatile characteristics so that nitrogen manure, and utilization rate of fertilizer is low.A large amount of tests show that China's nitrogenous fertilizer this season utilization ratio is merely 25%-33%.Nitrogenous fertilizer contaminated soil, underground water and the atmosphere of a large amount of losses, and then have influence on the people's life, also caused the huge waste of resource and the increase of agricultural cost simultaneously.The fertilizer efficiency period of common nitrogenous fertilizer is merely 30~50 days, and farm crop need the fertile phase to be generally 90~120 days, for alleviating and solving these contradictions and problem; We need be through changing the performance of fertilizer itself; Prolong the fertilizer validity period, promote the effective utilization of crop, thereby improve utilization rate of fertilizer fertilizer.
Existing sustained-release synergistic fertilizer mainly contains three types: the one, encapsulate, coating, coating class; The 2nd, urea formaldehyde, IBDU, Oxamides; The 3rd, add various suppressor factor or sustained-release synergistic agent fertilizer.Because of many factors such as cost, technologies, preceding two types of slow release fertilizers are applied less, and the 80%th, belong to the slow release fertilizer that adds suppressor factor or sustained-release synergistic agent.
In sum, be not difficult to find out that the fertilizer efficiency period of prolongation fertilizer is of great benefit to agricultural, can reach single fertilization, exempt the operation of topdressing, raising the output, fertile, the saving of labor of joint; Therefore and the raising utilization rate of fertilizer not only to agricultural, all is very great to the whole national economy meaning particularly, has resources conservation, environmental friendliness, and the fertilizer of low-carbon economy becomes China at present and even the universe's great research topic.
Summary of the invention
To above-mentioned situation, for overcoming the defective of prior art, the object of the invention just is to provide a kind of nitrogen fertilizer slow-releasing synergistic agent, and it is low effectively to solve utilization rate of fertilizer; Environmental pollution serious problems, the technical scheme of its solution are to be made up of following ratio of weight and number: Dyhard RU 100 (DCD) 10-20 part, thiocarbamide 10-20 part; Vitamin B5-10 part, poly-aspartic-acid (PASP) 5-10 part, xanthohumic acid 20-30 part, wallantoin 10-15 part; Whitfield's ointment 3-5 part, chitosan 2-3 part, auxiliary material 35-50 part.The present invention is 200 times of nitrogenous fertilizer or the compounds fertilizer by weight of material replacement that have the effect of superelevation fertilizer efficiency with minute quantity.Reduce the usage quantity of fertilizer, improve fertilizer utilization ratio, reach the purpose of increasing both production and income.Simultaneously, can effectively reduce the objectionable impurities in the fertilizer, make it to become Green Product; For fertilizer particularly nitrogen manure have obvious synergistic effect, improve soil, preserve the ecological environment; Promote the healthy and strong growth of crop, increasing both production and income has huge economic benefit and social benefit.
Another technical problem to be solved by this invention provides the preparation method of nitrogen fertilizer slow-releasing synergistic agent.
For solving the problems of the technologies described above, technical scheme of the present invention is: the preparation method of nitrogen fertilizer slow-releasing synergistic agent may further comprise the steps successively:
The nitrogen fertilizer slow-releasing synergistic agent, it by following raw materials by weight portion than constituting: Dyhard RU 100 (DCD): thiocarbamide: vitamins B: poly-aspartic-acid (PASP): xanthohumic acid: wallantoin: Whitfield's ointment: chitosan: auxiliary material=10~20: 10~20: 5~10: 5~10: 20~30: 10~15: 3~5: 2~3: 35~50.
Described auxiliary material is to be made up of following raw materials by weight portion ratio: zeolite powder: wilkinite: manganese mud: flyash=2: 1: 0.5: 1
Said Dyhard RU 100 can replace with pyridine, and said thiocarbamide can replace with quinhydrones.
The present invention combines nitrification inhibitor Dyhard RU 100 or pyridine and urease inhibitors thiocarbamide or quinhydrones, makes their produce synergy, brings into play bigger inhibition effect.
Embodiment
Below in conjunction with embodiment, the present invention is done further explanation.
Practical implementation is following:
Nitrogen fertilizer slow-releasing synergistic agent of the present invention, it is made up of following raw materials by weight portion ratio: Dyhard RU 100 (DCD): thiocarbamide: vitamins B: poly-aspartic-acid (PASP): xanthohumic acid: wallantoin: Whitfield's ointment: chitosan: auxiliary material=15: 10: 5: 5: 15: 10: 3: 2: 35.
Described auxiliary material by following raw materials by weight portion than forming: zeolite powder: wilkinite: manganese mud: flyash=2: 1: 0.5: 1
Production technique of the present invention is simple and easy to do, specifically is to get earlier according to the above ratio: 20 kilograms of zeolite powders, 10 kilograms of humic acid, 5 kilograms in manganese mud, and 10 kilograms in flyash, mixing and stirring, the auxiliary material for preparing is subsequent use.
Get 15 kilograms of Dyhard RU 100s, 10 kilograms of thiocarbamides, vitamin B5 kilogram, 5 kilograms of poly-aspartic-acids (PASP), 15 kilograms of xanthohumic acids, 10 kilograms of wallantoins, 3 kilograms of Whitfield's ointments, 2 kilograms of chitosans, 35 kilograms of auxiliary materials more according to the above ratio; Be crushed to 80 orders again; Mix by proportioning, stirring gets final product.Press multifunctional slow-release fertilizer additive again: compound is fertile=5: 95 mixed is even, can produce that various multifunctional slow-release compounds are fertile, special-purpose fertilizer and BB be fertile.Use this fertilizer on the agricultural, its fertilizer efficiency period can extend to 90~120 days, and utilization ratio can improve 20~30%, reaches single fertilization, and release is topdressed, and under equal fertilizer application condition, can increase production 10~20%, under with the equal yield line condition, can save with fertile more than 20%.
Said components of the present invention, wherein Dyhard RU 100 or pyridine are nitrification inhibitor, sensu lato nitrification inhibitor is meant that all compounds that can delay arbitrary step in the nitrifying process reaction chain or the reaction of a few step can be referred to as nitrification inhibitor; Sense stricto nitrification inhibitor then refers to suppress ammonia oxidizing bacteria (AOB) activity, thereby suppresses ammonium (NH
3) be oxidized to the organic or inorganic compound of nitrite, promptly suppress the Nitrosomonas activity, thereby suppress the compound of the 1st step reaction (ammonium nitrogen is oxidized to nitrite nitrogen) of nitrification.Its mechanism of action is: through microorganism activies such as nitrite bacteria in the inhibition soil, blocking-up and inhibition ammonium nitrogen (NH
4 +) to nitric nitrogen (NO
3 -) oxidation, make nitrogenous fertilizer for a long time with NH
4 +Form remain in the soil, reduced NO thus
3 -Nitrous Oxide (the N that the leaching loss that can not be occurred by the soil preservation possibly cause with the nitrification and denitrification effect takes place
2O) loss, thus fertilizer utilization ratio improved, increase fertilizer efficiency.
Said components of the present invention, wherein thiocarbamide or quinhydrones are urease inhibitor, urease inhibitor mainly is the decomposition that suppresses urea.Urase is a kind of enzyme of hydrolyze urea in soil.After urea was manured into soil, reaction as follows took place:
H
2NCONH
2→NH
2COOH+NH
3→CO
2+2NH
3→←H
2CO
3+2NH
3
Wherein by H
2NCONH
2→ NH
2The step of COOH is by urase control, and through experimental verification, the urea back 15 days rate of decomposition that are manured into soil have just reached 98%, and visible urase is very rapid to the hydrolysis of urea.Urease inhibitor can suppress the activity of urase, thereby slows down H
2NCONH
2→ NH
2The carrying out of COOH step reaches the hydrolysis rate that reduces urea, the volatilization of minimizing ammonium nitrogen and nitrated.
Said components of the present invention; Wherein vitamins B, poly-aspartic-acid, xanthohumic acid, wallantoin, Whitfield's ointment, chitosan are all being played a great role aspect soil improvement and the soil conditioning, and the combination of each component is mutually promoted; Promote the absorption of plant effectively to nutritive element; Reduced the loss of nutritive elements such as nitrogen phosphorus potassium, and can absorption, activation, displace the multiple mineral element in the soil, like calcium, magnesium, phosphorus etc.; And the validity of these elements is increased greatly; Thereby improve the nutrition adjusting of crop, improve the yield and quality of farm crop, also reduced surface water and body of groundwater pollution that agriculture prodn becomes and reduced fertile medicine loss to cause simultaneously.
The embodiment of more than describing has just been explained ultimate principle of the present invention; The technician of the industry will be appreciated that; It is the restriction that receives above-mentioned instance that the present invention has more than; Do not breaking away from the spirit and scope of the present invention, multiple variation and improved can arranged, so these variations and improve and all should require to fall in the scope that requires protection.
Weight quota unit in each technical scheme of the present invention can also can be other unit for gram or kilogram (kilogram) or ton.
Product of the present invention organically combines Dyhard RU 100 and thiocarbamide or pyridine and quinhydrones; Prolonged the fertilizer efficiency period of ammonium fertilizer and amide nitrogen fertilizer; Fertilizer efficiency period can extend to 90 days-120 days, and had added the soil improvement amendment, had promoted crop absorbing various nutritive elements.
The nitrogenous fertilizer or the compound fertilizer that add product of the present invention can significantly improve crop to the absorption of nitrogen utilization; Increase the absorbed dose of plant to nutritive element; The specific absorption of nitrogen improves more than 50%; The specific absorption of phosphorus improves more than 5%, and the specific absorption of potassium improves more than 20%, and micro-absorbed dose improves about 30%.
Nitrogenous fertilizer or the compound fertilizer that adds product of the present invention can realize that single-dose application can satisfy the needs of crop whole growth season to nitrogen, reaches the saving of labor, saves time, reduces production costs and the purpose of increasing both production and income.
Product prepn of the present invention is simple to operate, and production cost is low, environmental friendliness, and environmental protection is drawn materials extensively, is easy to get, and is easy to realize.The raw material that adopts all is cheap, efficient, pollution-free, and no any residual in soil, really realizes the production of environmental friendliness nitrogen fertilizer slow-releasing synergistic agent.
The nitrogenous fertilizer or the compound fertilizer that add product of the present invention are applicable to all kinds of crops and soil, and there are tangible disease-resistant drought resisting, cold-resistant, resistant to lodging effect in the back that is manured into soil to crop, and can effectively improve the ability that soil stores nutrient.Use the nitrogenous fertilizer or the compound fertilizer that add product of the present invention can improve crop yield 15-20%.
Claims (8)
1. nitrogen fertilizer slow-releasing synergistic agent; It is characterized in that it is to be made up of following raw materials by weight portion ratio: Dyhard RU 100 (DCD): thiocarbamide: vitamins B: poly-aspartic-acid (PASP): xanthohumic acid: wallantoin: Whitfield's ointment: chitosan: auxiliary material=10~20: 10~20: 5~10: 5~10: 20~30: 10~15: 3~5: 2~3: 35~50.
2. nitrogen fertilizer slow-releasing synergistic agent as claimed in claim 1 is characterized in that described auxiliary material is to be made up of following raw materials by weight portion ratio: zeolite powder: wilkinite: manganese mud: flyash=2: 1: 0.5: 1.
3. nitrogen fertilizer slow-releasing synergistic agent according to claim 1 is characterized in that described Dyhard RU 100 can replace with pyridine.
4. nitrogen fertilizer slow-releasing synergistic agent according to claim 1 is characterized in that described thiocarbamide can replace with quinhydrones.
5. nitrogen fertilizer slow-releasing synergistic agent according to claim 1 is characterized in that it is made up of following raw materials by weight portion ratio: Dyhard RU 100 (DCD): thiocarbamide: vitamins B: poly-aspartic-acid (PASP): xanthohumic acid: wallantoin: Whitfield's ointment: chitosan: auxiliary material=15: 10: 5: 5: 15: 10: 3: 2: 35.
6. according to claim 1 and 3 and 4 described nitrogen fertilizer slow-releasing synergistic agent, it is characterized in that it is made up of following raw materials by weight portion ratio: pyridine: quinhydrones: vitamins B: poly-aspartic-acid (PASP): xanthohumic acid: wallantoin: Whitfield's ointment: chitosan: auxiliary material=18: 8: 5: 5: 13: 10: 3: 2: 36.
7. according to claim 1 and 3 and 4 described nitrogen fertilizer slow-releasing synergistic agent, it is characterized in that it is made up of following raw materials by weight portion ratio: Dyhard RU 100 (DCD): quinhydrones: vitamins B: poly-aspartic-acid (PASP): xanthohumic acid: wallantoin: Whitfield's ointment: chitosan: auxiliary material=20: 5: 5: 5: 20: 10: 3: 2: 30.
8. according to claim 1 and 3 and 4 described nitrogen fertilizer slow-releasing synergistic agent, it is characterized in that it is made up of following raw materials by weight portion ratio: pyridine: thiocarbamide: vitamins B: poly-aspartic-acid (PASP): xanthohumic acid: wallantoin: Whitfield's ointment: chitosan: auxiliary material=22: 5: 5: 5: 10: 10: 3: 2: 38.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012101150223A CN102603432A (en) | 2012-04-19 | 2012-04-19 | Nitrogen fertilizer slow release synergist |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012101150223A CN102603432A (en) | 2012-04-19 | 2012-04-19 | Nitrogen fertilizer slow release synergist |
Publications (1)
Publication Number | Publication Date |
---|---|
CN102603432A true CN102603432A (en) | 2012-07-25 |
Family
ID=46521289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012101150223A Pending CN102603432A (en) | 2012-04-19 | 2012-04-19 | Nitrogen fertilizer slow release synergist |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102603432A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102992907A (en) * | 2012-12-27 | 2013-03-27 | 安徽帝元生物科技有限公司 | Synergistic loss-control agent of nitrogenous fertilizers and production method thereof |
CN103030458A (en) * | 2012-09-18 | 2013-04-10 | 吴江 | Fertilizer synergist and preparation method thereof |
CN103396267A (en) * | 2013-08-12 | 2013-11-20 | 辽宁绿源生物农业科技有限公司 | Nitrogen stable-release compound additive and application thereof |
CN103708962A (en) * | 2013-12-25 | 2014-04-09 | 黑龙江沃丰肥业有限公司 | Fertilizer nutrient controlled-release coating agent |
CN103951528A (en) * | 2014-05-26 | 2014-07-30 | 云南云叶化肥股份有限公司 | Controlled release compound fertilizer and preparation method thereof |
CN104086289A (en) * | 2014-06-27 | 2014-10-08 | 广西平乐农药厂 | Macromolecular composite synergist for nitrogen fertilizer |
CN104086290A (en) * | 2014-06-27 | 2014-10-08 | 广西平乐农药厂 | Synergist for chemical fertilizer |
CN104609994A (en) * | 2015-01-16 | 2015-05-13 | 王连祥 | Compound bio-fertilizer for decreasing content of nitrate in protected soil and vegetables |
CN105175188A (en) * | 2015-09-24 | 2015-12-23 | 辽宁普天科技有限公司 | Method for preparing fulvic acid calcium magnesium fertilizers |
CN105753612A (en) * | 2016-02-05 | 2016-07-13 | 赵景林 | Improvement on production method of long-acting controlled-release chelated synergist |
US10182569B2 (en) | 2016-01-29 | 2019-01-22 | Kaneka Corporation | Composition comprising allantoin and method of applying allantoin to a plant |
CN110028667A (en) * | 2019-04-22 | 2019-07-19 | 苏州美瑞姿生物科技有限公司 | A kind of synthetic method for the poly-aspartate derivant that niacinamide is modified |
CN110342979A (en) * | 2019-07-11 | 2019-10-18 | 中国农业科学院作物科学研究所 | A kind of rice fertilizer synergist and preparation method thereof and application method |
CN110357710A (en) * | 2019-07-10 | 2019-10-22 | 中国农业科学院作物科学研究所 | A kind of Resistance of Wheat To Adversity physiology slow release fertilizer synergist and the preparation method and application thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1109038A (en) * | 1994-03-21 | 1995-09-27 | 中国科学院沈阳应用生态研究所 | Novel nitrogen fertilizer long-acting synergist |
CN102153416A (en) * | 2011-05-16 | 2011-08-17 | 江西省农业科学院土壤肥料与资源环境研究所 | Special root-inducing slow release high-efficiency fertilizer for double cropping rice and preparation method thereof |
CN102153409A (en) * | 2011-03-15 | 2011-08-17 | 长江师范学院 | Pickle prolonged-effect-time compound fertilizer and preparation method thereof |
-
2012
- 2012-04-19 CN CN2012101150223A patent/CN102603432A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1109038A (en) * | 1994-03-21 | 1995-09-27 | 中国科学院沈阳应用生态研究所 | Novel nitrogen fertilizer long-acting synergist |
CN102153409A (en) * | 2011-03-15 | 2011-08-17 | 长江师范学院 | Pickle prolonged-effect-time compound fertilizer and preparation method thereof |
CN102153416A (en) * | 2011-05-16 | 2011-08-17 | 江西省农业科学院土壤肥料与资源环境研究所 | Special root-inducing slow release high-efficiency fertilizer for double cropping rice and preparation method thereof |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103030458A (en) * | 2012-09-18 | 2013-04-10 | 吴江 | Fertilizer synergist and preparation method thereof |
CN102992907B (en) * | 2012-12-27 | 2014-10-08 | 安徽帝元生物科技有限公司 | Synergistic loss-control agent of nitrogenous fertilizers and production method thereof |
CN102992907A (en) * | 2012-12-27 | 2013-03-27 | 安徽帝元生物科技有限公司 | Synergistic loss-control agent of nitrogenous fertilizers and production method thereof |
CN103396267A (en) * | 2013-08-12 | 2013-11-20 | 辽宁绿源生物农业科技有限公司 | Nitrogen stable-release compound additive and application thereof |
CN103396267B (en) * | 2013-08-12 | 2015-07-01 | 辽宁绿源生物农业科技有限公司 | Nitrogen stable-release compound additive and application thereof |
CN103708962A (en) * | 2013-12-25 | 2014-04-09 | 黑龙江沃丰肥业有限公司 | Fertilizer nutrient controlled-release coating agent |
CN103708962B (en) * | 2013-12-25 | 2016-02-17 | 黑龙江沃丰肥业有限公司 | The agent of a kind of Fertilizer nutrient controlled release coating |
CN103951528A (en) * | 2014-05-26 | 2014-07-30 | 云南云叶化肥股份有限公司 | Controlled release compound fertilizer and preparation method thereof |
CN103951528B (en) * | 2014-05-26 | 2015-12-30 | 云南云叶化肥股份有限公司 | A kind of control mistake type composite fertilizer and preparation method thereof |
CN104086290A (en) * | 2014-06-27 | 2014-10-08 | 广西平乐农药厂 | Synergist for chemical fertilizer |
CN104086289A (en) * | 2014-06-27 | 2014-10-08 | 广西平乐农药厂 | Macromolecular composite synergist for nitrogen fertilizer |
CN104609994A (en) * | 2015-01-16 | 2015-05-13 | 王连祥 | Compound bio-fertilizer for decreasing content of nitrate in protected soil and vegetables |
CN105175188A (en) * | 2015-09-24 | 2015-12-23 | 辽宁普天科技有限公司 | Method for preparing fulvic acid calcium magnesium fertilizers |
CN105175188B (en) * | 2015-09-24 | 2018-12-28 | 辽宁普天科技有限公司 | A kind of preparation method of fulvic acid calcium and magnesium fertilizer |
US10182569B2 (en) | 2016-01-29 | 2019-01-22 | Kaneka Corporation | Composition comprising allantoin and method of applying allantoin to a plant |
CN105753612A (en) * | 2016-02-05 | 2016-07-13 | 赵景林 | Improvement on production method of long-acting controlled-release chelated synergist |
CN110028667A (en) * | 2019-04-22 | 2019-07-19 | 苏州美瑞姿生物科技有限公司 | A kind of synthetic method for the poly-aspartate derivant that niacinamide is modified |
CN110357710A (en) * | 2019-07-10 | 2019-10-22 | 中国农业科学院作物科学研究所 | A kind of Resistance of Wheat To Adversity physiology slow release fertilizer synergist and the preparation method and application thereof |
CN110342979A (en) * | 2019-07-11 | 2019-10-18 | 中国农业科学院作物科学研究所 | A kind of rice fertilizer synergist and preparation method thereof and application method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102603432A (en) | Nitrogen fertilizer slow release synergist | |
CN101450880B (en) | Nitrogen fertilizer compound synergist and preparation method | |
CN102040435B (en) | Preparation method of organic slow-release fruit fertilizer | |
CN107892634B (en) | Liquid package fertilizer special for cotton for improving soil, preparation method and application method | |
CN101805616B (en) | Disease-resistant synergy-type conditioner of protected horticultural vegetable field soil and preparation method thereof | |
CN102515968A (en) | Multifunctional synergistic nitrogen fertilizer and preparation method thereof | |
CN103787798A (en) | Long-acting synergistic controlled release fertilizer | |
CN102603431A (en) | Film coating synergistic nitrogen fertilizer and preparation method thereof | |
CN104370652A (en) | Special silicon containing compound fertilizer for paddy and preparation method of said fertilizer | |
CN102126893A (en) | Long-acting slow release fertilizer additive and production method thereof | |
CN108546215B (en) | Organic acid-regulating synergistic drip irrigation fertilizer and preparation method thereof | |
CN101921156A (en) | Nitrogen stabilizer as well as preparation method and application thereof | |
CN102491829A (en) | Nitrogen fertilizer synergist composition | |
CN101279865A (en) | Long-term slow release formulation containing slow release nitrogen fertilizer and production method thereof | |
CN102372527A (en) | Si-Ca-Zn-S-Mg fertilizer | |
CN101891541B (en) | Multifunctional slow-release fertilizer additive | |
CN101817712A (en) | Reactive type sustained-release fertilizer compounded by nitrification inhibitor/urea formaldehyde and preparation method thereof | |
CN108975994A (en) | Complex fertilizer and preparation method thereof | |
CN103641635A (en) | Bio-compound water-retaining fertilizer | |
CN102531777A (en) | Long-acting alkaline nitrogenous fertilizer and production method thereof | |
CN101973811B (en) | Multielement compound fertilizer | |
CN105753612A (en) | Improvement on production method of long-acting controlled-release chelated synergist | |
CN102850131A (en) | Multifunctional slow-release/controlled-release fertilizer synergist and production technique of synergist | |
CN105110993A (en) | Controlled-release high-nitrogen liquid fertilizer with effect of improving nitrogen use efficiency and preparation method of controlled-release high-nitrogen liquid fertilizer | |
CN102249820B (en) | Long-acting slow release nitrogen combined depressant applied to acid soil and long-acting slow release nitrogen fertilizer prepared from same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |