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Method for preparing high-concentration organic fertilizer special for organic farms

An organic fertilizer and high-concentration technology, applied in the agricultural field, can solve the problems of low nutrient supply intensity, low nutrient content, and inability to meet crop mineral nutrition needs, and achieve the effect of improving the convenience of transportation and use, and reducing the dosage

Inactive Publication Date: 2012-08-15
杜伟
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The application of organic fertilizers is inseparable from the production process of organic farms. However, the current organic fertilizers have very low nutrient content and low nutrient supply intensity, which cannot meet the mineral nutrient requirements of crop growth, especially during the period of maximum fertilizer demand.

Method used

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Embodiment Construction

[0006] Endogenous organic waste from organic farms (such as straw, rice husk, organic factory waste or livestock and poultry manure) is preferred, and the dry material is crushed by mechanical crushing, and the wet material is crushed by stirring.

[0007] According to the ratio of carbon to nitrogen of 20-25:1, mix organic materials, adjust the moisture content of the raw materials so that the solid content of the materials reaches 5%-8%, pump the materials into the pyrolysis tank, control the pyrolysis temperature at 80-100°C, stir and heat After 48-72 hours of hydrolysis reaction, the pyrolysis solution is passed through a 2-3mm pore-diameter membrane and pumped into the flash evaporation system through the pump tube, and the water is evaporated in three stages to obtain a fluid or semi-dried solid. Add straw, rice husk powder, etc. to the liquid or semi-dried solid to further adjust the moisture content of the fertilizer to below 8%, and use a double-roller die granulator t...

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Abstract

The invention relates to agricultural high-concentration organic fertilizer preparation methods, in particular to a method for preparing high-concentration organic fertilizer special for organic farms. The method includes: mixing crushed organic wastes according to the carbon-nitrogen mass ratio of 20-25:1, pumping the mixture subjected to water-solid mass ratio adjustment into a pyrolysis tank for pyrolytic reaction, filtering pyrolysis solution through a membrane with the pore diameter ranging from 2mm to 3mm, using a pump pipe to pump the filtered pyrolysis solution into a three-level flash evaporator to be dewatered to obtain fluid or semidried solid, adding straws and rice hull powder to adjust water content of the fertilizer to be lower than 8%, and granulating to obtain organic fertilizer particles with the particle diameter ranging from 1cm to 2cm. Total nitrogen-phosphorus-potassium content of the high-concentration organic fertilizer is increased by four to five times as compared with that of normal organic fertilizer, and the high-concentration organic fertilizer has the advantages of quickness in supply, and is applicable to topdressing in the maximum nutrient demand period of crops and low in usage. Further, convenience in transport and utilization of the organic fertilizer is improved as the fertilizer is made into particles.

Description

technical field [0001] The invention relates to the technical field of agriculture, in particular to a method for preparing a high-concentration organic fertilizer specially used for organic farms. Background technique [0002] The production process of organic farms is inseparable from the application of organic fertilizers. However, the current organic fertilizers have very low nutrient content and low nutrient supply intensity, which cannot meet the mineral nutrient requirements of crop growth, especially during the period of maximum fertilizer demand. Contents of the invention [0003] The purpose of the present invention is to provide a preparation method of the special organic fertilizer for organic farms with high nutrient content. [0004] The technical scheme of the present invention is: according to the mass ratio of carbon and nitrogen of 20-25:1, after mixing the pulverized organic waste, adding water to adjust the solid mass ratio of the mixed material to 5%-8...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00
CPCY02W30/40
Inventor 杜伟
Owner 杜伟
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