Method for preparing relay-like ionic conversion controlled-release fertilizer

A technology of controlled-release fertilizer and ion conversion, which is applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of deterioration of soil physical properties, affecting the improvement of crop yield and quality, and low utilization rate of chemical fertilizers. Small environmental pollution, good effect

Inactive Publication Date: 2012-01-04
TIANJIN SHIYIDE FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Too low utilization rate of chemical fertilizers will lead to excessive fertilization, which will worsen the physical properties of the soil, which will affect the improvement of crop yield and quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of a relay-type ion conversion controlled-release fertilizer, its raw material composition and weight percentage are respectively:

[0027] Polyacrylamide 5%;

[0028] Corn starch 10%;

[0029] Rosin 5%;

[0030] Liquid paraffin 5%;

[0031] Bentonite 5%;

[0032] Water 70%.

[0033] The steps of preparation method are:

[0034] (1) Add water and polypropylene amine to the reactor according to the weight ratio, heat the reactor to 90°C, heat for 40 minutes, and stir evenly;

[0035] (2) Cool the reaction kettle to 80°C, then add cornstarch according to the weight ratio, after adding, keep warm for 0.5 hours, and stir evenly;

[0036] (3) The temperature of the reaction kettle is raised to 95° C., and rosin is added in proportion by weight, kept for 50 minutes, and stirred evenly;

[0037] (4) Add liquid paraffin in the reaction kettle by weight ratio, stir evenly, keep stirring and temperature for 1 hour;

[0038] (5) Cool down the reaction ...

Embodiment 2

[0041] A preparation method of a relay-type ion conversion controlled-release fertilizer, its raw material composition and weight percentage are respectively:

[0042] Polyacrylamide 6%;

[0043] Corn starch 8%;

[0044] Rosin 4%;

[0045] Liquid paraffin 6%;

[0046] Bentonite 4%;

[0047] Water 72%.

[0048] The steps and content of its preparation method are the same as in Example 1.

Embodiment 3

[0050] A method for preparing a relay-type ion-conversion controlled-release fertilizer, the composition of the raw materials and their weight percentage ranges are respectively:

[0051] Polyacrylamide 4%;

[0052] Corn starch 12%;

[0053] Rosin 6%;

[0054] Liquid paraffin 4%;

[0055] Bentonite 6%;

[0056] Water 68%.

[0057] The steps and content of its preparation method are the same as in Example 1.

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PUM

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Abstract

The invention relates to a method for preparing a relay-like ionic conversion controlled-release fertilizer, which comprises the following steps: (1) adding water and polyacrylamide into a reaction kettle according to a weight mixing ratio, and uniformly stirring; (2) cooling the reaction kettle to 80 DEG C, adding corn starch according to a weight mixing ratio, and uniformly stirring; (3) rising the temperature of the reaction kettle to 95 DEG C, adding rosin according to a weight mixing ratio and uniformly stirring; (4) adding liquid paraffin into the reaction kettle according to a weight mixing ratio, uniformly stirring, and keep stirring and keeping the temperature for 1 hour; and (5) cooling the reaction kettle to 80 DEG C, adding bentonite according to the weight mixing ratio, uniformly stirring and discharging. The fertilizer prepared by the method overcomes the common problems of low utilization rate and serious environment pollution of quick-acting chemical fertilizers widely used at home and abroad and has the characteristics of excellent fertilizer effect, little environment pollution, high economic benefit, simple and easy manufacturing, low cost and high nutrient utilization rate which is up to 65 percent.

Description

technical field [0001] The invention belongs to the field of chemical fertilizers, and relates to concentrated chemical fertilizers, in particular to a preparation method of relay-type ion conversion controlled-release fertilizers. Background technique [0002] Chemical fertilizer plays an important role in agricultural production, and is the largest material investment in agricultural production, accounting for about 50% of its total productive expenditure. Agricultural practice shows that the comprehensive influence of fertilizer properties and soil environmental conditions makes the low fertilizer utilization rate a common problem in the use of chemical fertilizers. At present, the utilization rate of chemical fertilizers in foreign countries is about 50-55%, and the utilization rate of chemical fertilizers in my country is about 35%. Nutrients are usually lost through washing, decomposition, and conversion of water-soluble phosphorus into insoluble constitutive-soluble p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 吴庆树
Owner TIANJIN SHIYIDE FERTILIZER
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