Organic fertilizer produced from plant straws by aerobic fermentation and preparation method thereof

Abstract

The invention provides a method for producing an organic fertilizer from plant straws by aerobic fermentation. According to the method, the plant straws are used as a major material and appropriate portions of edible fungi residue, seed cake, calcium magnesium phosphate and cellulose decomposition bacteria are added to carry out aerobic fermentation of the mixed compost. By applying modern high-temperature aerobic fermentation of the compost, the method comprises the procedures of pre-treatment of raw materials, high-temperature aerobic fermentation, aging, pulverizing, granulating, drying and screening. The method employs a way of fermentation that is different from the traditional process, specifically, high-temperature aerobic fermentation of the compost, to produce the organic fertilizer.

Description

technical field [0001] The invention belongs to the technical field of organic fertilizers, in particular to a method for producing organic fertilizers by fermenting plant stalks. Background technique [0002] my country is a large agricultural production country, with a large area of ​​crops, and a large amount of crop stalks are produced after the crops are harvested. The annual total output reaches more than 700 million tons and increases at a rate of 1.3%. Straw contains a large amount of organic matter, nitrogen, phosphorus, potassium and trace elements. It is one of the important organic fertilizer resources for agricultural production. The stored nutrient content is equivalent to a quarter of my country's current chemical fertilizer application. The most abundant and cheapest renewable resources on the earth are not fully utilized due to the increase in index and the transfer of rural labor force. Except some straws are used as feed and paper-making raw materials, most...

AI Technical Summary

Problems solved by technology

Straw contains a large amount of organic matter, nitrogen, phosphorus, potassium and trace elements. It is one of the important organic fertilizer resources for agricultural production. The stored nutrient content is equivalent to a quarter of my country's current chemical fertilizer application. The most abundant and cheapest renewable resources on the earth are not fully utilized due to the increase in index and the transfer of rural labor force. Except some straws are used as feed and paper-making raw materials, most of the plant straws are either burned or discarded, and the utilization rate is extremely low. In addition to causing a great waste of resources and energy, it also pollutes the atmosphere and water bodies, causing serious damage to the ecological environment. The comprehensive treatment and utilization of straw has become a hot spot in current research.

Due to the high lignin and cellulose content in plant straw, the effect of direct application is not good. Generally, it can be used after fermentation. However, the traditional fermentation and retting process takes a long time (generally 25 days or even longer), which is not convenient for continuous industrialization. Production

Images