Preparation method of cow dung organic fertilizer

Abstract

The invention provides a preparation method of cow dung organic fertilizer. The preparation method comprises the following steps: 1) carrying out harmless treatment on cow dung, namely mixing cow dung and sheep excrement, adding activated carbon, uniformly stirring and mixing, controlling temperature to be 40-60 DEG C, ventilating and fermenting, wherein ventilation is carried out for 15-20 minutes every 4-6 hours, and fermentation is carried out for 5-7 days, so that harmless cow dung is obtained; 2) treating crop straw and wheat bran, namely respectively pulverizing the crop straw and wheat bran, and sieving with a 40-mesh screen; 3) composting, namely uniformly mixing the harmless cow dung obtained in the step 1) and the crop straws and wheat bran which are treated in the step 2) with silicon fertilizer and calcium magnesium phosphate fertilizer, carrying out strip-shaped pile treatment, wherein a strip-shaped pile is 5-10m long, 2-5m wide and 1-1.5m high, and material is uniformly composted layer by layer; and when temperature in the pile is higher than 65 DEG C, turning the pile every 5-7 days, keeping temperature to be higher than 65 DEG C and fermenting for 15-20 days, and collecting up the strip-shaped pile; and 4) preparing, namely after compost is produced according to the steps, adding bentonite, and uniformly stirring, so that the cow dung organic fertilizer is obtained.

Description

technical field [0001] The invention relates to the technical field of livestock breeding, in particular to a method for preparing cow dung organic fertilizer. Background technique [0002] In recent years, due to the continuous advancement of my country's policies on agriculture, rural areas and farmers, the fertilizer industry has been rapidly developed and applied throughout the country, and organic fertilizer equipment has also developed rapidly. With the intensification of market segmentation, in 2013, my country's fertilizer equipment products will develop in the direction of lightweight, large-scale, high-end, and integration. The consolidation of my country's fertilizer processing machinery industry will further intensify. Looking ahead to 2013, we predict that the integration of the organic fertilizer equipment industry will further intensify, and organic fertilizer equipment products will also develop in the direction of lightweight, large-scale, high-end, and int...

AI Technical Summary

Problems solved by technology

[0003] The composted cow dung has achieved harmless and stabilized treatment, and has reached the basic conditions for resource utilization as an organic fertilizer, but it has not yet reached the level of commercial sales in the market, and its application effect and scope of use are still limited. , so it is necessary to further process compost materials into powdery or granular organic fertilizers and organic-inorganic compound fertilizers with commercial properties through subsequent fertilizer making processes