Slow-release potassium sulfate fertilizer and preparation method thereof

A potassium sulfate, slow-release technology, applied in the direction of potash fertilizer, inorganic fertilizer, matrix fertilizer, etc., can solve the problems of inorganic and organic molecular weight increase, slow release rate, poor solubility, etc., to speed up the transmission speed, improve the utilization rate, activate active effect

Active Publication Date: 2015-01-21
沃博特生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] According to the above, the current slow-release potassium sulfate fertilizer in my country is mainly coated type, and the release rate of coated potassium sulfate is slow in the early stage of fertilizer effect, and nutrients cannot be absorbed and utilized by crops in time, which cannot meet the nutritional needs of crops, which is easy to cause Crop Deficiency Symptoms
Among them, there are also a small amount of polymer fertilizers, mainly inorganic fertilizer polymerization and inorganic organic polymerization. Inorganic polymerization has

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of slow release potassium sulfate fertilizer, its composition is as follows:

[0039] 75 parts of potassium sulfate, 5 parts of acrylic acid, 5 parts of acrylamide, 0.1 part of carboxymethyl cellulose as a loading enhancer, 0.05 part of glycidyl methacrylate as a crosslinking agent, and 0.05 part of potassium persulfate as an initiator.

[0040] The preparation method comprises the following steps:

[0041] (1) Prepare 75 parts of potassium sulfate as a saturated solution, 5 parts of acrylic acid as an aqueous solution with a concentration of 40%~50%, 5 parts of acrylamide as an aqueous solution with a concentration of 40%~50% and 0.05 parts of crosslinking The agent glycidyl methacrylate is added to the reaction kettle equipped with a stirrer, a condensing device and a nitrogen gas introduction pipe, and nitrogen gas is passed through for 10-20 minutes to remove the oxygen in the reaction kettle, and 0.05 parts of initiator potassium persulfate is added, and sti...

Embodiment 2

[0045] A kind of slow release potassium sulfate fertilizer, its composition is as follows:

[0046] 70 parts of potassium sulfate, 5 parts of acrylic acid, 5 parts of acrylamide, 0.2 part of polyethylene oxide as a loading enhancer, 0.1 part of ethylene glycol dimethacrylate as a crosslinking agent, and 0.1 part of ammonium persulfate as an initiator.

[0047] The preparation method comprises the following steps:

[0048] (1) Prepare 70 parts of potassium sulfate as a saturated solution, 5 parts of acrylic acid as an aqueous solution with a concentration of 40%~50%, 5 parts of acrylamide as an aqueous solution with a concentration of 40%~50% and 0.1 part of crosslinking The agent ethylene glycol dimethacrylate is added to the reaction kettle equipped with a stirrer, a condensing device and a nitrogen gas inlet pipe, and nitrogen gas is passed through for 10~20 minutes to remove the oxygen in the reaction kettle, and 0.05 parts of the initiator ammonium persulfate are added. ,...

Embodiment 3

[0052] A kind of slow release potassium sulfate fertilizer, its composition is as follows:

[0053] 80 parts of potassium sulfate, 8 parts of acrylic acid, 8 parts of acrylamide, 0.5 parts of poly-N-vinyl acetamide as a loading enhancer, 0.1 part of propane trimethylol triacrylate as a crosslinking agent, and sodium dodecamethylpropanesulfonate as an initiator 0.1 part.

[0054] The preparation method comprises the following steps:

[0055] (1) Prepare 80 parts of potassium sulfate as a saturated solution, 8 parts of acrylic acid as an aqueous solution with a concentration of 40%~50%, 8 parts of acrylamide as an aqueous solution with a concentration of 40%~50% and 0.1 part of cross-linking The agent propane trimethylol triacrylate was added to the reaction kettle equipped with a stirrer, a condensing device and a nitrogen gas inlet pipe, and nitrogen gas was passed through for 10~20 minutes to remove the oxygen in the reaction kettle, and 0.1 part of the initiator dodecamethy...

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PUM

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Abstract

The invention belongs to the field of crop fertilizers, and in particular relates to a slow-release potassium sulfate fertilizer and a preparation method thereof. The preparation method of the slow-release potassium sulfate fertilizer mainly comprises the following steps: mixing and dissolving acrylic acid, acrylamide, a crosslinking agent and potassium sulfate, then adding an initiating agent to initiate free radical polymerization, then adding a load strengthening agent to form high-load slow-release potassium sulfate, then performing radiation treatment by using an NH3 plasma, and introducing amino groups for increasing the fertilizer efficiency of the fertilizer. Slow-release potassium sulfate disclosed by the invention has quick-acting and slow-release functions, a quick-acting part can be used for rapidly acting on crops and promoting the growth of the crops, and a slow-release part can perform slow release, so that the great loss of the potassium sulfate fertilizer in soil can be prevented, the utilization rate of the fertilizer can be improved, and the consumption of the fertilizer can be reduced. Meanwhile, the added amino groups can be used for increasing the fertilizer efficiency of the fertilizer, activating the roots of plants, promoting the absorption of crops to the fertilizer and improving the quality of products. The slow-release potassium sulfate fertilizer disclosed by the invention can be dissolved in water, is suitable for water-soluble fertilizers, is environment-friendly, cannot cause pollution, and has positive significance in promoting the increase of the crop yield.

Description

technical field [0001] The invention belongs to the field of fertilizers for crops, and more precisely relates to a slow-release potassium sulfate fertilizer that can be used for water-soluble fertilizers. Background technique [0002] my country is a country with a large population and agriculture. In order to meet the needs of human life, vigorously developing agriculture is an important measure for our country. Chemical fertilizers play an important role in increasing the yield of food crops. The amount of chemical fertilizers in my country has grown rapidly, and sales account for 20% to 30% of the world's total fertilizer consumption. However, the utilization rate of fertilizers in the current season is very low, and nitrogen fertilizer is only 30% to 35%. %, phosphate fertilizer is about 10%~20%, potash fertilizer is 35%~50%, which is 15%~20% lower than the world average. [0003] Potassium plays an important role in agriculture and is one of the three elements. Potass...

Claims

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Application Information

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IPC IPC(8): C05G3/00
CPCC05D1/02C05G5/30C05G5/40
Inventor 陈庆张芝媛
Owner 沃博特生物科技有限公司
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