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Degradable natural organic matter bundled slow-releasing fertilizer and preparation method and usage thereof

A natural organic matter and slow-release fertilizer technology, applied in the direction of fertilizer mixture, application, fertilization device, etc., can solve the problems of high price, difficult polymer degradation, environmental pollution, etc., and achieve the effect of increasing fertilizer efficiency, simple operation, and reducing cost

Inactive Publication Date: 2007-10-31
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects that the prior art uses organic polymer-coated fertilizers, which are expensive, difficult to degrade the polymers used for coating, and cause serious environmental pollution caused by a large amount of accumulation in the soil after application, thereby providing a Using degradable organic matter as the wrapping material, the slow-release fertilizer wrapped with degradable natural organic matter will not cause damage to the soil while controlling the slow release of fertilizer in the soil, and its preparation method and use

Method used

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  • Degradable natural organic matter bundled slow-releasing fertilizer and preparation method and usage thereof
  • Degradable natural organic matter bundled slow-releasing fertilizer and preparation method and usage thereof
  • Degradable natural organic matter bundled slow-releasing fertilizer and preparation method and usage thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The ground wood powder (its main component is lignin) is passed through a 65-mesh sieve as a wrapping material, and the polyacrylamide aqueous solution with a mass fraction of 0.05 wt% is used as a binding agent, according to a conventional disc granulation method, The urea surface is wrapped several times in a disc granulator at about 50°C, and the granulation is dried until the water content is 5wt% of the total weight of the slow-release fertilizer, and then the surface is sprayed with waste oil as a sealant, and after drying Just obtain the degradable natural organic matter wrapped slow-release fertilizer of the present invention. Wherein, the coating of wood powder accounts for 12 wt% of the total weight of the slow-release fertilizer, and the weight of waste oil accounts for 15 wt% of the weight of the coating layer of wood flour.

[0043] Through the method of p-diaminobenzaldehyde colorimetry, measure the release situation of this degradable natural organic matt...

Embodiment 2

[0045] The ground walnut shell (its main component is lignin) is crossed through a 60-mesh sieve, and as a wrapping material, the polyacrylamide solution with a mass fraction of 0.2wt% is used as a binding agent, according to a conventional disc granulation method, The surface of urea is wrapped several times in a disc granulator at about 50°C, and the granulation is dried until the water content is 10wt% of the total weight of the slow-release fertilizer, and then the surface is sprayed with peanut oil as a sealant, and dried to obtain the present invention. Invented degradable natural organic matter wrapped slow-release fertilizer. Wherein, the coating of walnut shell accounts for 10wt% of the total weight of the slow-release fertilizer, and the weight of peanut oil accounts for 30wt% of the weight of the coating layer of walnut shell.

[0046] By gravimetric method, the storage situation of the slow-release urea coated with degradable natural organic matter at 60°C was meas...

Embodiment 3

[0048] The stalk (its main component is lignin) is ground through a 60-mesh sieve as a wrapping material, and the polyacrylamide solution with a mass fraction of 0.1 wt% is used as a binding agent, according to a conventional disc granulation method, in The surface of urea is wrapped multiple times in a disc granulator at about 50°C, and the granulation is dried until the water content is 5wt% of the total weight of the slow-release fertilizer, and then the surface is sprayed with waste oil as a sealant, and dried to obtain this urea. Invented degradable natural organic matter wrapped slow-release fertilizer. Wherein, the coating of straw accounts for 15wt% of the total weight of the slow-release fertilizer, and the weight of waste oil accounts for 8wt% of the weight of the coating layer.

[0049] Measure the leaching curve of the degradable natural organic matter wrapped slow-release urea in soil, as shown in Figure 3, measure urea with p-diaminobenzaldehyde colorimetry and U...

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Abstract

The invention discloses a degraded natural organic bundle slow release fertilizer, which comprises the following steps: comprising easy soluble nitrogen particle fertilizer; coating natural organic bundle slow release with the main element as lignin; coating vegetable fat film layer out of nature organic film layer as sealer; bruising the nature organic matter with the main element below 60 order as coating material; adopting normal disc pelleting method; sticking the coating material to the surface of easy soluble nitrogen fertilizer particle; drying; spraying vegetable fat as sealer; getting the product. This fertilizer is very cheap, which can be used to cotton, corn, wheat, flower and lawn.

Description

technical field [0001] The invention relates to a slow-release fertilizer coated with degradable natural organic matter, its preparation method and application. Background technique [0002] The demand for nutrients for crop growth is a spontaneous process. 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. According to the estimates of the Food and Agriculture Organization of the United Nations, 55% of the increase in food production in developing countries comes from the effect of fertilizers, and this is also the case for commercial crops. my country's fertilizer production and consumption ranks first in the world (for six consecutive years). In 2005, the production of chemical fertilizers was 38.8 million tons, and the total consumption was 45.1 million tons, accounting for 30% of the world's total consumption. However, in the use o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/90
Inventor 肖传绪莫海涛张小勇
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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