Special fertilizer for rice-shrimp farming as well as processing method and application of special fertilizer

Abstract

The invention discloses special fertilizer for rice-shrimp farming. The special fertilizer is prepared from biogas residue obtained after aerobic fermentation, auxiliary materials and a compound microbial flora, wherein the auxiliary materials comprise potassium fulvate, sodium humate and amino acid powder; the compound microbial flora is formed by lactic acid bacteria, bacillus subtilis and paenibacillus polymyxa; the ratio of the viable count of the lactic acid bacteria to the viable count of the bacillus subtilis to the viable count of the paenibacillus polymyxa is equal to 1.2 to 2.8 to 1;the adding amount of the compound microbial flora accounts for 1.4% of the total mass of the special fertilizer; the total adding amount of the potassium fulvate, the sodium humate and the amino acidpowder accounts for 30% of the total mass of the special fertilizer, and the mass ratio of the potassium fulvate to the sodium humate to the amino acid powder is equal 1 to 1 to 1. The invention alsoprovides a processing method of the special fertilizer for rice-shrimp farming and application of the special fertilizer in rice in the periods of 'breeding shrimp before rice cultivation' and 'breeding shrimp after rice cultivation' in a 'one-rice and three-shrimp' planting mode. The special fertilizer provided by the invention has the advantages of being low in production cost and excellent ineconomic benefit, protecting the ecological environment and the like, and has a great significance for promoting the development of the 'one-rice and three-shrimp' mode.

Description

technical field [0001] The invention belongs to the field of agricultural high-tech, and in particular relates to a special fertilizer for rice and shrimp co-breeding and a processing method and application thereof. Background technique [0002] The comprehensive rice and shrimp farming is a short-term, fast-track project to adjust the structure and transfer mode, and implement the agricultural supply-side reform, and the area of ​​rice and shrimp comprehensive farming will continue to grow rapidly. According to incomplete statistics, in 2018, the comprehensive cultivation area of ​​rice and shrimp nationwide was 10 million mu, accounting for 70.83% of the total cultivation area of ​​crayfish. The comprehensive cultivation of rice and shrimp has become the mainstream trend of the crayfish aquaculture industry. The integrated cultivation of rice and shrimp can achieve the effect of mutual benefit and double harvest of rice and shrimp. Crayfish can weed, exterminate, loosen so...

AI Technical Summary

Problems solved by technology

However, no matter what kind of comprehensive rice and shrimp breeding mode is used, when rice and crayfish are co-cultivated, there is no suitable top dressing option and available status.

So far, there is no fertilizer specifically for rice and shrimp comprehensive farming in the Chinese market, and the use of fertilizers has not formed a complete system. The main method is to add a large amount of chemical fertilizers to organic fertilizers, resulting in serious non-point source pollution of farmland and eutrophication of water bodies. At the same time, during the high temperature season in summer, a large amount of organic materials such as crayfish feces and plant residues are deposited in the bottom mud of the ring ditch, which will rot and breed a large number of pathogenic bacteria, causing severe disease and high mortality of crayfish According to statistics, the current yield of shrimp in rice is only about 50kg / mu; although the excessive use of chemical fertilizers meets the needs of algae, it is of no benefit to the improvement of rice quality; the amount of organic fertilizer is too large, and the common The amount of organic fertilizer is about 1 ton, but resources are not available and the cost is too high

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