Antagonistic bacteria preventing and removing continuous cropping tomato bacterial wilt and microbial organic fertilizer thereof

Abstract

The invention relates to antagonistic bacteria preventing and removing continuous cropping tomato bacterial wilt and a microbial organic fertilizer produced thereby, which belong to the technologies of agricultural intensified production. The antagonistic bacteria NJQL-18 with the significant antagonistic effect for pathogenic bacteria of the tomato bacterial wilt is obtained by separation, solidfermentation is further carried out on the antagonistic bacteria and organic materials for preparing the microbial organic fertilizer, the fertilizer contains more than 1 multiplied by 10<8> / g of NJQL-18, the content of total nitrogen is 4-5% (more than 90% is organic nitrogen), the total content of nutrients of nitrogen, phosphorus and potassium is 6-10%, and the content of organic matters is 30-35%. Tests show that the microbial organic fertilizer can lead the antagonistic bacteria to be rapidly propagated after being applied into the soil and form heterotic groups in the soil, and the biological prevention efficiency in the soil with the serious tomato bacterial wilt can be more than 80%. The long-term application of the microbial organic fertilizer in the soil without the formation ofcontinuous cropping obstacles can prevent the occurrence of the continuous cropping tomato bacterial wilt to a great extent.

Description

1. Technical field [0001] The invention relates to an antagonistic bacteria capable of preventing continuous-cropping tomato bacterial wilt and its microbial organic fertilizer, which belongs to the agricultural intensive production technology and is specially used for overcoming and eliminating the problem of continuous-cropping tomato bacterial wilt. 2. Background technology [0002] Tomato bacterial wilt is a bacterial soil-borne disease of vascular bundles caused by Ralstonia solanacearum. In 1906, American Simth scholars discovered and reported the disease for the first time. So far, bacterial wilt exists in all countries and regions except Antarctica. Laueria is divided into five physiological races and six biochemical races. All the races have certain pathogenicity to tomato, and race 1 has the strongest pathogenicity to tomato. In my country, tomato bacterial wilt mainly occurs in the warm and humid south. With the warming of the climate and the development of high...

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Problems solved by technology

[0003] On the other hand, the incineration of rice, wheat, corn, rapeseed and other crop straws, and the disposal of livestock and poultry manure after large-scale breeding not only seriously pollute the environment, but also greatly waste the organic fertilizer and bio-organic fertilizer products. Raw materials; a large number of nutrient resources (C, N, P, K, S and trace elements) are lost outside the soil-plant system, which obviously weakens the ability of my country's agricultural sustainable development

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