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Multifunctional sustained-release fertilizer

A controlled-release fertilizer, multi-functional technology, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of environmental pollution, single nutrition, cost waste, etc., and achieve the effects of reducing soil-borne diseases, improving soil, and improving utilization efficiency.

Active Publication Date: 2015-03-18
武汉盛大神农生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the compound (mixed) fertilizers currently on the market that are sought after by farmers only focus on nitrogen, phosphorus, and potassium. The nutrition is relatively simple and cannot meet the needs of various crops for nutrients. Not only does it cause high costs Waste, and will bring greater pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Put 350 parts by weight of urea and 300 parts of potassium sulfate that have been sieved through 100 meshes into a mixer and stir thoroughly. After mixing, use a fertilizer granulator to granulate, and the granulated urea and potassium sulfate mixture coated with 8 parts of polyurethane resin;

[0018] 2) After 100 mesh sieving, the parts by weight are 200 parts of diammonium hydrogen phosphate, 10 parts of magnesium sulfate, 15 parts of zinc sulfate, 5 parts of sodium octaborate, 1 part of ammonium molybdate, 0.3 parts of Sodium α-naphthalene acetate, 10 parts of alginic acid, 10 parts of vitamin C, 10 parts of polyacrylamide, 90 parts of humic acid, and 5 parts of plant anti-stubble agent powder are put into the mixer, fully stirred, and then used as fertilizer Granulating machine for granulation;

[0019] 3) Fully mix the polyurethane resin-coated particles in step 1) with the particles in step 2) to form a multifunctional slow-release fertilizer.

[0020] The o...

Embodiment 2

[0021] Embodiment 2: Step 3), the packaging is the same as Example 1, the difference is:

[0022] 1) Put 400 parts by weight of urea and 350 parts of potassium sulfate that have been sieved through 100 meshes into the mixer and stir thoroughly. After mixing, use a fertilizer granulator to granulate, and the granulated urea and potassium sulfate mixture with 10 parts of polyurethane resin coating;

[0023] 2) After 100 mesh sieving, the parts by weight are 250 parts of diammonium hydrogen phosphate, 15 parts of magnesium sulfate, 20 parts of zinc sulfate, 8 parts of sodium octaborate, 2 parts of ammonium molybdate, 0.4 parts of Sodium α-naphthalene acetate, 10 parts of alginic acid, 15 parts of vitamin C, 15 parts of polyacrylamide, 100 parts of humic acid, and 7 parts of plant anti-stubble agent powder are put into the mixer, fully stirred, and then used as fertilizer The granulator performs granulation.

Embodiment 3

[0024] Embodiment 3: Step 3), the packaging is the same as Example 1, the difference is:

[0025] 1) Put 300 parts by weight of urea and 300 parts of potassium sulfate that have been sieved through 100 meshes into the mixer and stir thoroughly. After mixing, use a fertilizer granulator to granulate, and the granulated urea and potassium sulfate mixture coated with 8 parts of polyurethane resin;

[0026] 2) After 100 mesh sieving, the parts by weight are 200 parts of diammonium hydrogen phosphate, 10 parts of magnesium sulfate, 15 parts of zinc sulfate, 5 parts of sodium octaborate, 1 part of ammonium molybdate, 0.3 parts of Sodium α-naphthalene acetate, 8 parts of alginic acid, 10 parts of vitamin C, 10 parts of polyacrylamide, 80 parts of humic acid, and 5 parts of plant anti-stubble agent powder are put into the mixer, fully stirred, and then used as fertilizer The granulator performs granulation.

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Abstract

The invention relates to a multifunctional sustained-release fertilizer. The multifunctional sustained-release fertilizer is prepared by the following methods that screened urea and potassium sulfate are placed in a stirrer for fully stirring by the weight ratio, after the urea and the potassium sulfate are uniformly mixed, a fertilizer pelletizer is utilized to conduct pelleting, and polyurethane resin is utilized to coat particles after pelleting; screened ammonium dibasic phosphate, magnesium sulfate, zinc sulfate, sodium octaborate, ammonium molybdata, alpha- Naphthyl acetic acid , alginic acid, vitamin C, polyacrylamide, humic acid and BSAD are placed in the stirrer for fully stirring by the weight ratio, and after the components are uniformly mixed, the fertilizer pelletizer is utilized to conduct pelleting; particles coated by the polyurethane resin and particles which are not coated by the polyurethane resin are fully uniformly mixed to obtain the multifunctional sustained-release fertilizer. The multifunctional sustained-release fertilizer can provide multiple required elements for growth of crops; a coating technology is adopted, so that the sustained-release effect can be achieved, and the utilization rate of the fertilizer is high; the crops can be stimulated to take root, soil can be improved, moisture and fertility can be preserved, rich water seepage force can be improved, continuous cropping can be resisted, soil-borne diseases are reduced, labor and time are saved, and yield and quality of the crops are improved.

Description

technical field [0001] The invention relates to a multifunctional slow and controlled release fertilizer. Background technique [0002] In recent years, the amount of chemical fertilizers used in my country has been increasing significantly, but the total grain output has not increased significantly in the past 10 years. Comparing the period from 1977 to 2005, the use of chemical fertilizers in my country increased by 700%, while grain production increased by 71%, while the planting area decreased by 13%. Obviously, the amount of chemical fertilizers has increased greatly, but crop yields have not increased accordingly, nutrient benefits have continued to decline, resource and environmental problems have become more and more prominent, and environmental pollution is very serious. This is mainly due to improper fertilization for a long time, which makes the soil have a single nutrient concentration that is too high, and harmful substances are easily produced in the soil and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 赵华顾永征王维勇金友前朱珊王菊
Owner 武汉盛大神农生物工程有限公司
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