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Functional fertilizer synergic composition and preparation method thereof

A fertilizer synergist and a functional technology, which are applied in the field of functional fertilizer synergistic compounds and their preparation, can solve problems such as environmental hazards, and achieve the effects of reducing fertilizer usage, increasing utilization, and improving soil structure

Pending Publication Date: 2018-04-06
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The improver is only used for soil improvement, and aluminum sulfate is not a soil nutrient, but will bring harm to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036]A functional fertilizer synergistic compound and a preparation method thereof, the functional fertilizer synergistic compound comprises: 40%-70% fertilizer synergist, 5%-10% organic silicon surface active agent, 5%-15% surface wetting agent, 5%-10% water-retaining slow-release agent and 30%-60% organic matter, etc., wherein the fertilizer synergist is polyaspartic acid with a weight average molecular weight of 8000-15000 Potassium acid.

[0037] In order to obtain the above-mentioned potassium polyaspartate with a weight average molecular weight of 8000-15000, firstly, potassium polyaspartate is prepared by a one-pot synthesis process, specifically, by maleic anhydride and ammonium bicarbonate at 160-200 ℃ reaction, time 1-1.5h, the reacted substance is then hydrolyzed by potassium hydroxide to obtain potassium polyaspartate with a weight average molecular weight of 8000-15000, and the obtained potassium polyaspartate is made into a weight content of 40 %-70% potassium ...

Embodiment 1

[0047] (1) 196g of maleic anhydride and 211g of ammonium bicarbonate were reacted at 160-200°C for 1-1.5h, then the solution obtained by dissolving 126g of potassium hydroxide in 226g of water was added to the reaction product, and the weight average molecular weight was obtained by hydrolysis. 8000-15000 potassium polyaspartate solution, add water to 40% solid content;

[0048] (2) the organosilicon surfactant of 8% by weight, the substituted polyoxyethylene ether of 1% by weight, the Tween-80 of 5% by weight, the OP-10 of 1% by weight, 5% by weight The polyacrylamide water-retaining slow-release agent, potassium humate with a weight content of 15%, compound amino acids with a weight content of 5%, and molasses liquid with a weight content of 15% are added to the above-mentioned 45% weight content of potassium polyaspartate solution , Stir evenly, then add to the colloid mill to mix and disperse, and pack the finished product after stabilization.

Embodiment 2

[0050] (1) 98kg of maleic anhydride and 105.5kg of ammonium bicarbonate were reacted at 160-200°C for 1-1.5h, then the solution obtained by dissolving 63kg of potassium hydroxide in 113kg of water was added to the reaction product, and the weight average molecular weight was obtained by hydrolysis In the 8000-15000 potassium polyaspartate solution, add water to a solid content of 50%;

[0051] (2) 6% by weight of silicone surfactant, 3% by weight of substituted polyoxyethylene ether, 5% by weight of Tween-80, and 8% by weight of anionic polyacrylamide water-retaining slow-release Add 20% potassium humate and 18% molasses solution by weight to the 40% potassium polyaspartate solution, stir evenly, then add to the colloid mill to mix and disperse, and wait for stabilization After packaging the finished product.

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Abstract

The invention relates to a functional fertilizer synergic composition which comprises a fertilizer synergist, a water retaining slow release agent and an organic matter, wherein the fertilizer synergist is potassium polyaspartate, the weight-average molecular weight of which is 8000-15000. Meanwhile, the invention also provides a preparation method of the functional fertilizer synergic composition. The functional fertilizer synergic composition is different from an existing fertilizer synergist which is single in function, and can realize slow release of the powder fertilizer, so that the utilization ratio of the fertilizer by crops is improved, and the usage of the fertilizer is reduced; and in addition, the composition can be used for surface treatment of the powdery fertilizer, can effectively prevent agglomeration of the powder fertilizer, improves the soil structure, and has a certain water-retaining and drought-resisting effect. As the environment-friendly functional fertilizer synergic composition, the functional fertilizer synergic composition has a wide application prospect.

Description

technical field [0001] The invention relates to the field of modern agriculture, in particular to a functional fertilizer synergistic compound and a preparation method thereof. Background technique [0002] At present, my country has become a big country in the production and consumption of fertilizers in the world, but the utilization rate of fertilizers in my country is very low. The nitrogen, phosphorus, and potassium are about 25-30%, 10-25%, and 35-50% respectively. The amount of fertilizer per unit area is the world's largest. 1.6 times the average dosage. Therefore, improving the utilization rate of fertilizers and reducing the amount of fertilizers used is an urgent problem to be solved in the development of modern agriculture in our country. Fertilizer synergists can improve the utilization rate of fertilizers, prolong the fertilizer efficiency and reduce the amount of fertilizer application. Existing researches mainly focus on polymer coated sustained release, ure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05G3/00C05G3/80
Inventor 王才龙春君张建伟韩晓娜傅东升薛兆弘
Owner INST OF CHEM CHINESE ACAD OF SCI
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