Antagonistic bacteria NJL-14 for preventing and controlling continuous-cropping tobacco bacterial wilt

Abstract

The invention relates to antagonistic bacteria NJL-14 for preventing and controlling continuous-cropping tobacco bacterial wilt, which belongs to intensive agricultural production technology. According to the invention, a microbial organic fertilizer is produced from two antagonistic bacteria (brevibacillus brevis NJL-25 and bacillus cereus NJL-14) which have a remarkable antagonistic function on pathogenic bacteria of the tobacco bacterial wilt and are obtained by separation, and organic fertilizers, wherein 1 gram of the microbial organic fertilizer contains more than 1*10<10> NJL-25 and 1*10<10> NJL-14, and has the total nitrogen content of 4 to 5 percent (organic nitrogen content is over 90 percent), the total nitrogen-phosphorus-potassium content of 6 to 10 percent and the content of organic matters of 30 to 35 percent. Tests prove that the microbial organic fertilizer, after being applied to soil, can fast multiply the antagonistic bacteria to form a dominant group in the soil, achieve the biological prevention and control rate of over 97.6 percent on the bacterial wilt in the soil with the tobacco bacterial wilt, and prevent the occurrence of the continuous-cropping tobacco bacterial wilt to a great extent after being applied for long to the soil without continuous cropping obstacles.

Description

[0001] This application is a divisional application, the original application is, the name of the invention: antagonistic bacteria for the control of continuous cropping tobacco bacterial wilt and its microbial organic fertilizer, application number: 200910183359.6. 1. Technical field [0002] The invention relates to an antagonistic bacteria capable of preventing and eliminating bacterial wilt of continuous cropping tobacco and a microbial organic fertilizer made by using the antagonistic bacteria, which belongs to the technical field of agricultural intensive production and is specially used for overcoming and eliminating the problem of bacterial wilt of continuous cropping tobacco. 2. Background technology [0003] Tobacco is the main economic crop in my country, and its quality is related to the national economy and people's livelihood. Tobacco bacterial wilt is one of the main diseases of tobacco, which is seriously harmful and is called "smoke cancer". It was first dis...

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Problems solved by technology

[0004] 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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