Organic selenium-enzyme and preparation method thereof

Abstract

The invention discloses an organic selenium-enzyme. The content of protein is 25-40%, the content of activated carbon is 8-9.55, humus is smaller than or equal to 50%, Se is larger than or equal to 5%, and H2O is smaller than or equal to 10%. The invention further discloses a preparation method of the organic selenium-enzyme. The method includes mixing, by weight, 60-70 parts of dregs of rapeseeds, 30-40 parts of soybean meal and corn starch with equal proportion, and 1-3 parts of sucrose with water at a temperature of 110-120 DEG C for 120 minutes; cooling the mixture until the temperature is 40-50 DEG C, mixing 0.5-1.5 parts of by weight of yeast powder, placing the mixture into a thermostat at a temperature of 45 DEG C for 120 hours; mixing 0.5-1.5 parts of by weight of glucoamylase and 3-6 parts of by weight of K3SeP3O10.xH2O into the mixture, placing the mixture into a culture pot, placing the culture pot in a sterile workshop for culture at a room temperature of 25-35 DEG C; and placing the mixture in a pressure kettle for vacuum degassing and dehumidification after 30 days to obtain the organic selenium-enzyme. The organic selenium-enzyme can activate microorganisms in soil, physical and mechanical states of the soil are obviously improved through metabolic turnover of the microorganisms, and the organic selenium-enzyme can be used as a micronutrient fertilizer for improving the soil.

Description

technical field [0001] The invention provides an organic selenium enzyme and a preparation method thereof. Background technique [0002] Since 1974, my country's agricultural and forestry production has used a large amount of chemical fertilizers, which has led to the deterioration of soil organisms and soil environment, resulting in many adverse consequences: ① soil compaction, soil erosion and desertification, ② heavy metal pollution, ③ decline in the intrinsic quality of crops ; Production reduction per unit area, ④Environmental pollution poses a threat to human health. In the development of modern agricultural production science and technology, how to live in harmony with nature, protect limited land resources, and promote the sustainable development of large-scale agriculture are issues that we must seriously consider and look forward to solving. [0003] At present, most of the selenium fertilizers sold on the market are inorganic selenium, i.e. sodium selenite, which...

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Problems solved by technology

[0003] At present, most of the selenium fertilizers sold on the market are inorganic selenium, i.e. sodium selenite, which has low potency when used, and long-term use will pollute the water quality and the environment. There is an existing method for preparing an organic selenium enzyme preparation, which uses probiotics such as fungi As a carrier, the conversion rate of inorganic selenium into organic selenium by biotransformation is low, only 30% to 60%, which affects the use effect

The document with the application number 200910231110.8 discloses a preparation method of an organic selenium enzyme preparation, which adopts three cultures of bacteria to convert inorganic selenium into organic selenium, but the conversion rate is low, and the residual inorganic selenium is harmful to soil microorganisms