CN103058752A - Preparation method for special slow-release long-acting compound fertilizer for paddy rice - Google Patents
Preparation method for special slow-release long-acting compound fertilizer for paddy rice Download PDFInfo
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- CN103058752A CN103058752A CN2012105743069A CN201210574306A CN103058752A CN 103058752 A CN103058752 A CN 103058752A CN 2012105743069 A CN2012105743069 A CN 2012105743069A CN 201210574306 A CN201210574306 A CN 201210574306A CN 103058752 A CN103058752 A CN 103058752A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B3/00—Fertilisers based essentially on di-calcium phosphate
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
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- Pest Control & Pesticides (AREA)
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Abstract
The invention provides a preparation method for a special slow-release long-acting compound fertilizer for paddy rice. The compound fertilizer is a mixture of a plurality of fertilizers and components with no special fertilizer efficiency and is characterized by being prepared from the following raw materials by mass: 25 to 45 parts of urea, 8 to 25 parts of ammonium chloride, 20 to 35 parts of potassium chloride, 20 to 35 parts of a mixed phosphate fertilizer, 7 to 11 parts of a granulating auxiliary agent and a proper amount of water. The preparation method for the compound fertilizer comprises the following steps: (1) preparation of a compound of a potash fertilizer and a nitrogen fertilizer; (2) preparation of the mixed phosphate fertilizer; (3) preparation of mixed particles of the components of the compound fertilizer; (4) coating with stearic acid; (5) powder spreading of a modified zeolite powder material; and (6) screening, metering, quality inspection and packaging of qualified fertilizer. The invention provides the preparation method for the special slow-release long-acting compound fertilizer which has overall nutrients and excellent slow releasing performance, can fully satisfy demands for nutrients by paddy rice, enables fertilizer effectiveness to be maximumly performed, improves both output and quality of paddy rice, saves resources, protects the environment and has low manufacturing cost and a low sale price.
Description
Technical field
The present invention is a kind of preparation method of sustained-release long-acting compound fertilizer of paddy rice special use.Belong to multiple fertilizer with without the mixture of special fertilizer efficiency component.
Background technology
Paddy rice is important food crop and cash crop, has statistics to show, its output and cultivated area rank first in the world.In the people's livelihood and national economy, occupy critical role.Effectively utilize the Limited Land resource, the yield and quality that improves rice crop is people's direction of making great efforts and eternal problem.
The nutritive element that rice growth need to absorb is kind more than 20 nearly, mainly contains nitrogen, phosphorus, three kinds of macroelement of potassium; The major element such as Calcium Magnesium Sulphur, silicon and boron, copper.The trace element such as zinc, molybdenum.These nutritive elements mainly provide by soil from fertilizer.
The content of chlorion surpasses 3% composite fertilizer and is called chlorine-based compound fertilizer, because there is negative impact in chlorine-based compound fertilizer to the growth of some fear-chlorion crop, and chlorion concentrating in soil is residual in a large number, easily causes soil compaction, salinization, alkalization.So some composite fertilizer manufacturing enterprise selects vitriolate of tartar with the potassium source in the compound fertilizer product, perhaps sloughs the chlorion in the Repone K, makes so-called S-based compound fertilizer.The S-based compound fertilizer complicated process of preparation, production cost is high, and price is also higher, has increased the agricultural-food production cost.
Yet, chlorine is one of seven kinds of necessary trace elements of plant-growth, the chlorine element can enter vegetable cell by the photosynthesis of involved in plant, play the startup and closure of osmotic pressure and the pore of regulating plant cell, be conducive to the absorption of moisture and nutrient, improve its drought-resistant ability, chlorion has the effects such as the photosynthesis of promotion and fiber formation, and it is particularly suitable that the fibre crops such as crudefiber crop are used; Improve the resistance against diseases of plant, such as gaeumannomyces graminis disease, the stripe rust of wheat, the stem wilt of corn etc.Chlorion has restraining effect to the nitrobacteria in the soil, can delay ammonium nitrogen to the conversion rate of nitric nitrogen, run off and denitrification loss thereby effectively reduce nitric nitrogen, and be that the fertilizer efficiency of nitrogenous fertilizer is lasting.Say, the stabilizing ion in the chlorine crop plants cell has active effect to the balance of storage of ions in the cell and to the absorption of the elements such as nitrogen, phosphine, potassium, calcium, magnesium, silicon, is conducive to promote growing of plant stem-leaf again.
Paddy rice is the strong crop of anti-chlorine power, and ammonium chloride, Repone K are cheap, are the comparatively ideal nitrogen in rice field, potash fertilizer kind.Paddy field soil moisture is sufficient, can play diluting effect to causing the strong chloride chemical fertilizer of salt ability.Chlorine is the element that the most easily is moved.Chlorine the most easily runs off or seepage in water, and unlikely salt damage and the chlorine evil of causing.
But chlorine-based compound fertilizer material plant recovery of nutrient of the prior art only is 25%-35%, and wherein the N fertilizer utilization rate less than 30%, loses especially severe, and causes the pollution of soil pollution, atmospheric environment.
Chlorine element in compound manure is played a positive role in promoting crop growth, can optimize, improve the utilization ratio of chlorine-based compound fertilizer material, can avoid again its disadvantageous effect to plant growth and edatope is that people expect the problem that solves.
The high-quality nitrogenous fertilizer that urea is nitrogenous height, fertilizer efficiency is fast, consumption is large.But, urea in use, easily run off by approach such as volatilization, leaching, decomposition and runoffs, cause the fertilizer efficiency utilization ratio not high, according to statistics, the this season utilization ratio only has about 30%, and this has not only caused the waste of chemical fertilizer, and the environment of depending on for existence for mankind such as atmosphere, water body soil.
Chinese patent application number 201110021688.8 " biodegradable coated ureas " of Shikefeng Chemical Industry Co., Ltd.'s application have successfully solved the above problem that urea nitrogenous fertilizer exists, the stearic acid that utilization can be degraded under the soil microorganisms effect is as the coated fertilizer of nitrogenous fertilizer urea, provide a kind of coated fertilizer biodegradable, pollution-free, can improve again the biodegradable coated urea product of the utilization ratio of fertilizer.But it is a kind of high-quality nitrogenous fertilizer, and nutritive ingredient is single, can not be as the slow release fertilizer that is suitable for Rice Cropping and uses.
Phosphorus is the important composition element of cytoplasmic biomolecule, also is the requisite a kind of element of plant-growth.Phosphatic rock is the main raw mineral materials of making phosphate fertilizer and extracting phosphorus and compound thereof; But make the P in the phosphate fertilizer requirement phosphatic rock
2O
5〉=28%; Extract the phosphatic rock P that phosphorus and compound thereof require
2O
5Content higher.
And along with the development of phosphorus chemical product and Phosphate Fertilizer Industry, the ground phosphate rock requirement increases sharply, and the higher-grade phosphate rock resource is deficient.The mode of production that only depends on rich phosphorus ore can not meet the demands.In this case, the development and use of the phosphatic rock resource that grade is not high, no matter for economizing on resources, or protection of the environment is all significant.
In sum, there is following deficiency in paddy rice-dedicated fertilizer material of the prior art:
1.. the multilayer coating, complex manufacturing, investment is large, production cost is high.
2. coated fertilizer hard degradation, life-time service can bring negative impact to soil; Even soil polluted, affect the quality of agricultural-food.
3. the main nutrient elements proportioning in the fertilizer is unreasonable, and the fertilizer efficiency utilization ratio is low.
4. utilization rate of fertilizer is low, waste resource, contaminate environment.
5. S-based compound fertilizer manufacturing original is high, causes the fertilizer price high, has increased peasant's economical load.
6. the preparation method of the sustained-release long-acting compound fertilizer of paddy rice special use is also rare.
Summary of the invention
The object of the invention is to avoid above-mentioned weak point of the prior art; and provide a kind of comprehensive nutrition; sustained release performance is excellent; can fully satisfy paddy rice to the demand of nutrient; bring into play to greatest extent the effectiveness of fertilizer; can improve rice yield and can improve again its quality, namely economize on resources, protection of the environment again, the preparation method of the sustained-release long-acting compound fertilizer of the paddy rice special use that manufacturing cost and selling price are lower.
Purpose of the present invention can reach by following measure:
The preparation method of the sustained-release long-acting compound fertilizer of paddy rice special use of the present invention is characterized in that being made by following raw material according to the mass fraction meter:
Wherein:
Described mixed phosphorus fertilizer is composited by diammonium phosphate, fused(calcium magnesium)phosphate and floats, and its mass percent is for example lower:
Diammonium phosphate 30～50
Fused(calcium magnesium)phosphate 25～40
Floats 20～45
Described floats are P
2O
5The low grade rock phosphate of content between 10%～20%;
Described granulation aid is mixed by the bauxitic clay powder of 60%～70% wilkinite and 40%～30% and is formed;
Its preparation method comprises the steps:
1.. the preparation of potash fertilizer, nitrogenous fertilizer mixture
At first behind urea 25～45 weight part heating and meltings, add ammonium chloride 8～25 weight parts and Repone K 20～35 weight parts and mix, make the potash fertilizer, the nitrogenous fertilizer mixture that contain potassium, chlorine, ammonium, for subsequent use;
2.. the mixed phosphorus fertilizer preparation
A. the preparation of floats
To contain P
2O
510%～20% phosphatic rock grinds, the fineness of floats is controlled 100 orders ± 10, and is for subsequent use;
B. mix
With floats 20～45 weight part mixings of diammonium phosphate 30～50 weight parts, fused(calcium magnesium)phosphate 25～40 weight parts and step a preparation, for subsequent use;
3.. the preparation of each component composite grain of compound manure
Mixed phosphorus fertilizer 20～35 weight parts that 2. potash fertilizer, nitrogenous fertilizer mixture and the step that 1. step is prepared prepare, evenly mixed, add granulating agent 7～11 weight parts, water is an amount of.Utilize traditional tablets press with each component mixing granulation of described compound manure, for subsequent use;
4.. stearic acid is filmed
Stearic consumption is 0.6%～1.2% of each component composite grain quality of compound manure of 3. preparing of step, and coating method is as follows:
A.. the stearic preparation of melting
Coating after according to the prescription accurate-metering, in the input stearic acid fusion tank, is heated to molten state with stearic acid, and is for subsequent use;
B.. coating
3. each the component composite grain of compound manure for preparing according to prescription accurate-metering step, melting stearic acid with step a preparation carries out spraying outside the particle in drum-type mixing granulation machine, makes the composite grain outside surface form as far as possible uniformly coating, warm air drying, the cooling of room temperature wind, for subsequent use; Processing condition are as follows:
The warm air drying temperature is not higher than 80 ℃
The cooling draught temperature is not higher than 50 ℃;
5.. modified zeolite powder powder body material face powder
A. the face powder preparation of mixed powder
According to Magnesium Stearate 1.1%～2.5%, the proportioning raw materials of zeolite powder 97.5%～98.9% accurately takes by weighing respectively each component of raw material, mix, and grinding flour, the control powder fineness is crossed 120 mesh sieves, and is for subsequent use;
B. the coating of applying powder
The mixed powder consumption of step a preparation is controlled at each component composite grain face powder 10～15kg of every 1000kg compound manure;
6.. screening, metering, quality test, qualified rear packing makes the sustained-release long-acting compound fertilizer of paddy rice special use; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour.
Adopted in the prescription of the present invention to be suitable for the chloride-based slow-release compound fertilizer granule that Rice Cropping is used, then chloro composite N-K fertilizer particle has been carried out stearic acid and once coat with modified zeolite powder secondary surface face powder and make.Mainly be after utilizing urea melting liquid and ammonium chloride, Repone K, mixed phosphorus fertilizer mixing, utilize traditional tablets press with each component mixing granulation of described compound manure, production technique is easy, and useful environment protection has reduced the production cost of compound manure.
The coated fertilizer that the present invention adopts can be degraded under the soil microorganisms effect, and stearic acid is easy to decompose generation CO under the effect of soil microorganisms
2And H
2O has avoided the pollution of coated fertilizer to environment, has saved fossil resource, is conducive to the eubiosis.
The phosphatic rock that grade is not high is introduced prescription of the present invention, and no matter for economizing on resources, or protection of the environment is all significant.
Purpose of the present invention can also reach by following measure:
The preparation method of the sustained-release long-acting compound fertilizer of paddy rice special use of the present invention is characterized in that being made by following raw material according to the mass fraction meter:
Wherein:
Described mixed phosphorus fertilizer is composited by diammonium phosphate, fused(calcium magnesium)phosphate and floats, and its mass percent is for example lower:
Diammonium phosphate 35～45
Fused(calcium magnesium)phosphate 20～30
Floats 30～35.
It is preferred technical scheme.
The preparation method of the sustained-release long-acting compound fertilizer of paddy rice special use of the present invention is characterized in that being made by following raw material according to the mass fraction meter:
Wherein:
Described mixed phosphorus fertilizer is composited by diammonium phosphate, fused(calcium magnesium)phosphate and floats, and its mass percent is for example lower:
Diammonium phosphate 45
Fused(calcium magnesium)phosphate 20
Floats 35
It is a preferred technical scheme.
Sustained-release long-acting compound fertilizer according to the paddy rice special use of preparation method's preparation of the sustained-release long-acting compound fertilizer of paddy rice special use of the present invention is characterized in that product reaches following technical indicator:
Application process according to the sustained-release long-acting compound fertilizer of the paddy rice special use of preparation method's preparation of the sustained-release long-acting compound fertilizer of paddy rice special use of the present invention is characterized in that trench digging imposes on below the earth's surface base fertilizer: 40～50Kg/ mu; Topdress: 20～30Kg/ mu.
The preparation method of the sustained-release long-acting compound fertilizer of paddy rice special use of the present invention, compared to existing technology by following positively effect:
1. a kind of comprehensive nutrition is provided; sustained release performance is excellent; can fully satisfy paddy rice to the demand of nutrient; bring into play to greatest extent the effectiveness of fertilizer; can improve rice yield can improve again its quality, namely economize on resources; protection of the environment again, the preparation method of the sustained-release long-acting compound fertilizer of the paddy rice special use that manufacturing cost and selling price are lower.
2. individual layer coating, generating process is simple, low equipment investment, production cost is low.
3. coated fertilizer can be degraded under the soil microorganisms effect, has avoided the pollution of coated fertilizer to edatope.
4. adopted to be suitable for the chloride-based slow-release compound manure prescription that Rice Cropping is used, reduced selling price.
5. adopt the raw material of low grade as fertilizer sources.The higher-grade phosphate rock resource of saves valuable.The while protection of the environment.
6. had good sustained release effect, utilization rate of fertilizer is high.
Embodiment
The present invention will now be further detailed embodiment:
Embodiment 1
The sustained-release long-acting compound fertilizer for preparing in accordance with the following steps the paddy rice special use
1.. the preparation of potash fertilizer, nitrogenous fertilizer mixture
At first behind the urea 25 weight part heating and meltings, add ammonium chloride 12 weight parts and Repone K 27 weight parts and mix, make the potash fertilizer, the nitrogenous fertilizer mixture that contain potassium, chlorine, ammonium, for subsequent use;
2.. the mixed phosphorus fertilizer preparation
A. the preparation of floats
To contain P
2O
510%～20% phosphatic rock grinds, the fineness of floats is controlled 100 orders ± 10, and is for subsequent use;
B. mix
With the floats 35 weight part mixings of diammonium phosphate 45 weight parts, fused(calcium magnesium)phosphate 20 weight parts and step a preparation, for subsequent use;
3.. the preparation of each component composite grain of compound manure
Mixed phosphorus fertilizer 28 weight parts that 2. potash fertilizer, nitrogenous fertilizer mixture and the step that 1. step is prepared prepare, evenly mixed, add granulating agent 8 weight parts, water is an amount of.Utilize traditional tablets press with each component mixing granulation of described compound manure, for subsequent use;
4.. stearic acid is filmed
Stearic consumption is 1.2% of each component composite grain quality of compound manure of 3. preparing of step, and coating method is as follows:
A.. the stearic preparation of melting
Coating after according to the prescription accurate-metering, in the input stearic acid fusion tank, is heated to molten state with stearic acid, and is for subsequent use;
B.. coating
3. each the component composite grain of compound manure for preparing according to prescription accurate-metering step, melting stearic acid with step a preparation carries out spraying outside the particle in drum-type mixing granulation machine, makes the composite grain outside surface form as far as possible uniformly coating, warm air drying, the cooling of room temperature wind, for subsequent use; Processing condition are as follows:
The warm air drying temperature is not higher than 80 ℃
The cooling draught temperature is not higher than 50 ℃;
5.. modified zeolite powder powder body material face powder
A. the face powder preparation of mixed powder
According to Magnesium Stearate 1.1%～2.5%, the proportioning raw materials of zeolite powder 97.5%～98.9% accurately takes by weighing respectively each component of raw material, mix, and grinding flour, the control powder fineness is crossed 120 mesh sieves, and is for subsequent use;
B. the coating of applying powder
The mixed powder consumption of step a preparation is controlled at each component composite grain face powder 10～15kg of every 1000kg compound manure;
6.. screening, metering, quality test, qualified rear packing makes the sustained-release long-acting compound fertilizer of paddy rice special use; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour;
Product reaches following technical indicator:
Embodiment 2～embodiment 7
Method and step according to embodiment 1 prepare the sustained-release long-acting compound fertilizer of paddy rice special use according to the composition of raw materials of table 1
Table 1
Make the sustained-release long-acting compound fertilizer of paddy rice special use; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour;
Product reaches following technical indicator:
Claims (5)
1. the preparation method of the sustained-release long-acting compound fertilizer of a paddy rice special use is characterized in that being made by following raw material according to the mass fraction meter:
Wherein:
Described mixed phosphorus fertilizer is composited by diammonium phosphate, fused(calcium magnesium)phosphate and floats, and its mass percent is for example lower:
Diammonium phosphate 30～50
Fused(calcium magnesium)phosphate 25～40
Floats 20～45
Described floats are P
2O
5The low grade rock phosphate of content between 10%～20%;
Described granulation aid is mixed by the bauxitic clay powder of 60%～70% wilkinite and 40%～30% and is formed;
Its preparation method comprises the steps:
1.. the preparation of potash fertilizer, nitrogenous fertilizer mixture
At first behind urea 25～45 weight part heating and meltings, add ammonium chloride 8～25 weight parts and Repone K 20～35 weight parts and mix, make the potash fertilizer, the nitrogenous fertilizer mixture that contain potassium, chlorine, ammonium, for subsequent use;
2.. the mixed phosphorus fertilizer preparation
A. the preparation of floats
To contain P
2O
510%～20% phosphatic rock grinds, the fineness of floats is controlled 100 orders ± 10, and is for subsequent use;
B. mix
With floats 20～45 weight part mixings of diammonium phosphate 30～50 weight parts, fused(calcium magnesium)phosphate 25～40 weight parts and step a preparation, for subsequent use;
3.. the preparation of each component composite grain of compound manure
Mixed phosphorus fertilizer 20～35 weight parts that 2. potash fertilizer, nitrogenous fertilizer mixture and the step that 1. step is prepared prepare, evenly mixed, add granulating agent 7～11 weight parts, water is an amount of.Utilize traditional tablets press with each component mixing granulation of described compound manure, for subsequent use;
4.. stearic acid is filmed
Stearic consumption is 0.6%～1.2% of each component composite grain quality of compound manure of 3. preparing of step, and coating method is as follows:
A.. the stearic preparation of melting
Coating after according to the prescription accurate-metering, in the input stearic acid fusion tank, is heated to molten state with stearic acid, and is for subsequent use;
B.. coating
3. each the component composite grain of compound manure for preparing according to prescription accurate-metering step, melting stearic acid with step a preparation carries out spraying outside the particle in drum-type mixing granulation machine, makes the composite grain outside surface form as far as possible uniformly coating, warm air drying, the cooling of room temperature wind, for subsequent use; Processing condition are as follows:
The warm air drying temperature is not higher than 80 ℃
The cooling draught temperature is not higher than 50 ℃;
5.. modified zeolite powder powder body material face powder
A. the face powder preparation of mixed powder
According to Magnesium Stearate 1.1%～2.5%, the proportioning raw materials of zeolite powder 97.5%～98.9% accurately takes by weighing respectively each component of raw material, mix, and grinding flour, the control powder fineness is crossed 120 mesh sieves, and is for subsequent use;
B. the coating of applying powder
The mixed powder consumption of step a preparation is controlled at each component composite grain face powder 10～15kg of every 1000kg compound manure;
6.. screening, metering, quality test, qualified rear packing makes the sustained-release long-acting compound fertilizer of paddy rice special use; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour.
2. according to claim 1 the preparation method of sustained-release long-acting compound fertilizer of paddy rice special use is characterized in that being made by following raw material according to the mass fraction meter:
Wherein:
Described mixed phosphorus fertilizer is composited by diammonium phosphate, fused(calcium magnesium)phosphate and floats, and its mass percent is for example lower:
Diammonium phosphate 35～45
Fused(calcium magnesium)phosphate 20～30
Floats 30～35.
3. according to claim 1 the preparation method of sustained-release long-acting compound fertilizer of paddy rice special use is characterized in that being made by following raw material according to the mass fraction meter:
Wherein:
Described mixed phosphorus fertilizer is composited by diammonium phosphate, fused(calcium magnesium)phosphate and floats, and its mass percent is for example lower:
Diammonium phosphate 45
Fused(calcium magnesium)phosphate 20
Floats 35.
4. according to the sustained-release long-acting compound fertilizer of the paddy rice special use of preparation method's preparation of the sustained-release long-acting compound fertilizer of the paddy rice special use of claim 1, it is characterized in that product reaches following technical indicator:
5. according to the application process of the sustained-release long-acting compound fertilizer of the paddy rice special use of preparation method's preparation of the sustained-release long-acting compound fertilizer of the paddy rice special use of claim 1, it is characterized in that trench digging imposes on below the earth's surface base fertilizer: 40～50Kg/ mu; Topdress: 20～30Kg/ mu.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210574306.9A CN103058752B (en) | 2012-12-26 | 2012-12-26 | Preparation method for special slow-release long-acting compound fertilizer for paddy rice |
| PCT/CN2013/001245 WO2014101269A1 (en) | 2012-12-26 | 2013-10-14 | Method for preparing special slow-release long-acting compound fertilizer for paddy rice |
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|---|---|---|---|
| CN201210574306.9A CN103058752B (en) | 2012-12-26 | 2012-12-26 | Preparation method for special slow-release long-acting compound fertilizer for paddy rice |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103351210A (en) * | 2013-06-07 | 2013-10-16 | 安徽金阳环保肥业有限公司 | Multi-element fertilizer special for rice and preparation method thereof |
| CN103518451A (en) * | 2013-10-21 | 2014-01-22 | 东北农业大学 | Efficient mechanical topdressing method for rice field in cold region |
| WO2014101269A1 (en) * | 2012-12-26 | 2014-07-03 | 施可丰化工股份有限公司 | Method for preparing special slow-release long-acting compound fertilizer for paddy rice |
| CN105801254A (en) * | 2016-03-10 | 2016-07-27 | 山东植丰农化集团有限公司 | High-phosphate slow and controlled-release fertilizer and preparation method thereof |
| CN107298609A (en) * | 2017-06-28 | 2017-10-27 | 中国水稻研究所 | It is a kind of to be suitable for long-term effect Rice Ecology special fertilizer that base is applied and preparation method thereof |
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| US20210323884A1 (en) * | 2020-04-15 | 2021-10-21 | Innovations for World Nutrition, LLC | Fertilizer or plant growth enhancer using lipid and optionally a carbohydrate to increase plant yield and method of increasing plant yield |
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| CN102336617B (en) * | 2011-09-02 | 2013-09-25 | 史丹利化肥股份有限公司 | High-tower granulation slow release long-effect chlorine base compound fertilizer and preparation method thereof |
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| CN103058752B (en) * | 2012-12-26 | 2014-11-05 | 施可丰化工股份有限公司 | Preparation method for special slow-release long-acting compound fertilizer for paddy rice |
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| CN1235944A (en) * | 1999-06-18 | 1999-11-24 | 徐忱修 | Polyary long acting organic compound fertilizer and its preparing method |
| CN101066901A (en) * | 2007-04-03 | 2007-11-07 | 张国忠 | Soline alkali resisting rice fertilizer |
| CN102093144A (en) * | 2011-01-19 | 2011-06-15 | 施可丰化工股份有限公司 | Biodegradable coated urea |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014101269A1 (en) * | 2012-12-26 | 2014-07-03 | 施可丰化工股份有限公司 | Method for preparing special slow-release long-acting compound fertilizer for paddy rice |
| CN103351210A (en) * | 2013-06-07 | 2013-10-16 | 安徽金阳环保肥业有限公司 | Multi-element fertilizer special for rice and preparation method thereof |
| CN103351210B (en) * | 2013-06-07 | 2015-09-30 | 倪群 | Multi-element fertilizer special for rice and preparation method thereof |
| CN103518451A (en) * | 2013-10-21 | 2014-01-22 | 东北农业大学 | Efficient mechanical topdressing method for rice field in cold region |
| CN103518451B (en) * | 2013-10-21 | 2015-05-27 | 东北农业大学 | Efficient mechanical topdressing method for rice field in cold region |
| CN105801254A (en) * | 2016-03-10 | 2016-07-27 | 山东植丰农化集团有限公司 | High-phosphate slow and controlled-release fertilizer and preparation method thereof |
| CN107298609A (en) * | 2017-06-28 | 2017-10-27 | 中国水稻研究所 | It is a kind of to be suitable for long-term effect Rice Ecology special fertilizer that base is applied and preparation method thereof |
| CN107298609B (en) * | 2017-06-28 | 2021-02-26 | 中国水稻研究所 | Long-acting rice ecological special fertilizer suitable for basal application and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| WO2014101269A1 (en) | 2014-07-03 |
| CN103058752B (en) | 2014-11-05 |
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