Soil conditioner containing calcium cyanamide and preparation method thereof

A soil conditioner, calcium cyanamide technology, applied in the fields of agriculture, soil conditioner and fertilizer, can solve the problems of reduced fertilizer efficiency, resource consumption, fertilizer efficiency decline, etc., to achieve balanced nitrogen and calcium ratio, significant killing effect, enhanced killing The effect of the extinction effect
CN102718607AInactive Publication Date: 2012-10-10SHENZHEN BATIAN ECOTYPIC ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN BATIAN ECOTYPIC ENG
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a soil conditioner containing calcium cyanamide and a preparation method thereof. The soil conditioner comprises, by weight percentage, 20-60% of carbonaceous organic material, 30-80% of calcium cyanamide, and 5-15% of grease. The preparation method includes: drying the carbonaceous organic material, crushing, well mixing the carbonaceous organic material, the calcium cyanamide and the grease according to the weight percentage, and extruding and granulating. By the preparation method, the problems that the calcium cyanamide particles is easy to resolve in water to generate cyanide ammonia gas causing effective components loss of the calcium cyanamide, and harm to human bodies can be caused by the cyanide ammonia gas can be well solved. When the soil conditioner containing calcium cyanamide is used in soil fumigation, the calcium cyanamide can be reacted with water to generate the cyanide ammonia gas which has evident killing effect to various soil-borne diseases. In the meantime, heat and ammonia generated during fermentation and decomposition process of the carbonaceous organic material can enhance the killing effect of the calcium cyanamide.
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Description

Technical field:

[0001] The invention relates to the field of agriculture, soil conditioner and fertilizer, in particular to the soil conditioner containing calcium cyanamide. Background technique:

[0002] Calcium cyanamide (CaNCN) is slightly soluble in water and has an alkaline reaction. It is usually made of gaseous ammonia and calcium carbide (calcium carbide) in an electric furnace heated to about 1000°C to form a cohesive block, which is crushed and ground after cooling. , and its components also contain calcium oxide, calcium carbide, graphite carbon and other components and a small amount of residual calcium carbide. Calcium cyanamide is used as a chemical fertilizer. The nitrogen contained in it cannot be directly absorbed by plants. It must react with water in the soil to first generate calcium hydroxide and cyanamide. absorb. Among them, the generated cyanamide also has the functions of disinfection, insecticide and disease prevention.

[0003] As a soil fumig...

Claims

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