Biomass charcoal particles loaded with matrine-chitosan sustained-release microspheres and preparation method thereof

A technology of biomass charcoal particles and slow-release microspheres, which is applied in the agricultural field, can solve problems such as threats to life and health, human and animal poisoning, and excessive pesticide content, so as to reduce the decomposition rate, increase the extraction rate, and increase soil organic matter. Effect

Inactive Publication Date: 2017-07-21
孙志廷
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Problems solved by technology

Extensive use of highly toxic and high-residue broad-spectrum chemical pesticides not only seriously exceeds the standard of pesticides

Method used

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Examples

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Embodiment Construction

[0016] The biochar particles loaded with matrine-chitosan slow-release microspheres in this example are prepared from the following raw materials in parts by weight: 30 parts of Sophora flavescens, 8 parts of star anise, 6 parts of bay leaves, and 120 parts of biological straw 40 parts of activated clay, 30 parts of chitosan, 15 parts of glacial acetic acid, 8 parts of glutaraldehyde, 12 parts of maleic anhydride, appropriate amount of 75% ethanol aqueous solution, appropriate amount of hydrochloric acid aqueous solution, appropriate amount of chloroform, appropriate amount of deionized water .

[0017] The biochar particles loaded with matrine-chitosan slow-release microspheres of the present embodiment are prepared by the following steps:

[0018] (1) Wash Sophora flavescens, star anise, and laurel leaves with deionized water for 3 times, and air-dry naturally; crush and grind for 60 minutes, pass through a 100-mesh sieve, and obtain a particle mixture; use 75% ethanol aqueo...

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Abstract

The invention discloses biomass charcoal particles loaded with matrine-chitosan sustained-release microspheres and a preparation method thereof. The preparation method is characterized in that adopting ultrasonic extraction and microwave extraction combined technology and chloroform extraction to extract and separate matrine; performing glutaraldehyde and chitosan in-situ crosslinking on the surface of matrine to obtain matrine coated chitosan sustained-release microspheres; loading the chitosan sustained-release microspheres on the surfaces of biomass charcoal particles through action between maleic anhydride and the chitosan sustained-release microspheres and hydroxyl on the surfaces of the biomass charcoal particles to obtain the biomass charcoal particles loaded with the matrine-chitosan sustained-release microspheres. The biomass charcoal particles loaded with the matrine-chitosan sustained-release microspheres have broad-spectrum insecticidal property, can improve soil structure, increase soil organic matter and adjust soil microenvironment, and can serve as a high-quality energy source and a soil improver to be applied in the aspects of water source purification and soil improvement.

Description

technical field [0001] The invention belongs to the field of agriculture, and in particular relates to a biochar particle loaded with matrine-chitosan slow-release microspheres and a preparation method thereof. Background technique [0002] Among agricultural pollution sources, pesticide pollution is the most serious aspect. Extensive use of highly toxic and high-residue broad-spectrum chemical pesticides not only causes serious pesticide content in farmland and agricultural products to exceed the standard, but also often causes human and animal poisoning incidents, threatening people's lives and health. In order to fundamentally change this situation, it is necessary to use high-efficiency, low-toxic or non-toxic, low-residue or no-residue botanical pesticides. Many types of plants contain components that kill diseases and insect pests, and after industrial extraction, they can be used as pesticides, that is, botanical pesticides. The vast majority of plant pesticides are...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N25/10A01N25/26A01P7/04C09K17/40C09K101/00
Inventor 孙志廷
Owner 孙志廷
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