Straw compound fertilizer and preparation method thereof

Abstract

The invention belongs to the technical field of fertilizers, and discloses a straw compound fertilizer. The straw compound fertilizer is composed of the following raw materials in parts by weight: 60to 100 parts of crop straw, 20 to 40 parts of wormcast, 20 to 30 parts of an inorganic compound fertilizer, 10 to 20 parts of peat soil, 3 to 8 parts of edible fungus residues, 3 to 5 parts of acidiccarbon powder, 3 to 5 parts of humic acid, 1 to 3 parts of a compound microbial inoculum and 1 to 2 parts of amino acid. The invention also discloses a preparation method of the straw compound fertilizer, wherein the preparation method comprises the following steps: (1) cleaning and airing the crop straws, shearing and grinding, and carrying out microwave radiation treatment; (2) adding water intostraw particles, wormcast, edible fungus residues and the complex microbial inoculum, mixing, putting the mixture into a biodegradable plastic bag, sealing a bag opening to obtain a compost bag, andstanding for 15-25 days to complete composting; and (3) uniformly stirring and mixing the compost with an inorganic compound fertilizer, peat soil, acidic carbon powder, humic acid and amino acid to obtain the straw compound fertilizer. The straw compound fertilizer is rich in organic matter content and high in nitrogen, phosphorus and potassium nutrient content, and has the effects of improving soil, delaying nutrient release, increasing the nutrient utilization rate and the like.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and relates to a straw compound fertilizer and a preparation method thereof. Background technique [0002] As my country's grain production increases year by year, the output of crop straw is also increasing year by year. The annual output of my country's crop straw has exceeded 1 billion tons, becoming one of the most abundant substances in the world. The comprehensive utilization rate of straw in the country is about 80%. It is mainly used in straw returning to fields, livestock and poultry feed, biomass energy and light industrial raw materials, etc., but some straws are still directly incinerated or discarded. A large amount of dense smog was produced, which had a serious impact on people's living environment and transportation. Burning has caused serious environmental problems, and the government has banned the burning of straw. Returning straw directly to the field will lead to the inc...

AI Technical Summary

Problems solved by technology

However, the traditional composting method uses open-air composting, which has the disadvantages that the composting area is relatively large, and the composting process needs to be turned over, which is time-consuming and laborious, and it is difficult to move the composting pile, and the odor generated by composting affects the environment.

In the process of straw composting, although straw is rich in organic matter and some nutrients, it is difficult for composting microorganisms to obtain nutrients suitable for their growth in a short period of time due to insufficient available nutrients and high C / N ratio. Quickly decompose straw