Microorganism bacterium agent for preventing and treating ginger basal stem rot and preparation method and application thereof

Abstract

The invention relates to a microorganism bacterium agent for preventing and treating the ginger basal stem rot and a preparation method and application thereof. The microorganism bacterium agent comprises trichoderma longibrachiatum leavening and a mixed material; the mixed material is formed by humic acid, amino acid and medical stones; a mass ratio of the trichoderma longibrachiatum leavening to the humic acid to the amino acid to the medical stones is (3 to 6):(1 to 2):(1 to 2):(4 to 5); the number of active living bacteria in the trichoderma longibrachiatum leavening is greater than or equal to 2*10<9> per gram. According to the invention, the trichoderma longibrachiatum leavening is applied to prevention and treatment of the ginger basal stem rot; the microorganism bacterium agent for preventing and treating the ginger basal stem rot is prepared; the obtained number of the active living bacteria in trichoderma longibrachiatum is not smaller than 2*10<9> per gram; a prevention and treatment rate for the basal stem rot is high; the morbidity of the ginger basal stem rot can be greatly reduced by not less than 80%; yield of ginger can be improved by not less than 10%; the economic benefits are obvious; quality of the ginger product is improved.

Description

technical field [0001] The invention relates to a microbial agent for preventing and treating ginger stalk rot and its preparation method and application, belonging to the field of biological control. Background technique [0002] Ginger stem base rot is a soil-borne disease caused by Pythium infestation. It is one of the main diseases in ginger production and seriously affects the yield and quality of ginger. In recent years, the disease has been seriously harmful in some main ginger producing areas in China, and it has a tendency to develop and spread. The general incidence rate is 30% to 80%, and some plots may be cut off when serious. The disease begins 1 to 2 months after the emergence of ginger seedlings. The pathogens have been saprophytic in the soil for a long time, spread by water flow, cultivation, etc., and invade through rhizome wounds or directly from branch cracks and stem bases of aging seedlings, and then the stem bases appear different sizes. The water-soa...

AI Technical Summary

Problems solved by technology

[0005] In view of the pathogenic characteristics and regularity of ginger stem rot, the current control measures in production are mainly chemical agent control and agricultural control; chemical agent control mainly includes the use of chemical agents for soil fumigation and chemical spraying to irrigate roots, etc., because of its quick effect and other advantages, so that it is widely used in agricultural production; but long-term use will cause problems such as environmental pollution, drug resistance, pesticide residues, and large pollution.

[0006] Chinese patent document CN101999371A (application number: 201010508770.9) discloses a preparation for preventing and treating ginger stalk rot, a preparation for preventing and treating ginger stalk rot, which comprises 25% metalaxyl and 54-58% by weight , 95% hymexazol 5.5-6.5% and 20% copper succinate 36-40%. This preparation uses hymexazol, so there are many pesticide residues and great pollution

However, the preventive effect is poor, and it is far from the prevention rate required for actual ginger production, resulting in low yield.

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