Trichoderma harzianum composite bacteria culture and application of trichoderma harzianum composite bacteria culture in aspect of plant protection

Abstract

The invention relates to a trichoderma harzianum composite bacteria culture and application of the same in the aspect of plant protection, and belongs to the technical field of biology. The strain of the trichoderma harzianum composite bacteria culture is preserved in the China General Microbiological Culture Collection Center (CGMCC), and classified and named as Trichoderma harzianum MDCGTH 18, with a preservation number of CGMCC NO.2965. The Trichoderma harzianum MDCGTH 18 composite bacteria culture utilizes antagonistic microbes for biological prevention and treatment, simultaneously has the functions of inducing the disease resistance of plants and increasing the yield, has obvious effect of controlling aspen root rot, apple root rot, citrus yellow shoot, watermelon fusarium wilt, tobacco bacterial wilt, wheat scab, full rot, root rot, banded sclerotial blight, cucumber powdery mildew, downy mildew, vegetable gray mold, fusarium wilt and various other epidemic diseases, can be independently taken as a biological control microbial inoculum for plant diseases, and can also be mixed with other biological antiseptics, plant antibiotics, plant growth regulators and the prior antiseptics to prepare various biological antiseptics for controlling different plant diseases.

Description

Technical field: [0001] The invention relates to a screening and cultivating method of a compound bacterium of Trichoderma harzianum and Chaetomium and its application in biological control bacteria agents, belonging to the field of biotechnology. technical background: [0002] Worldwide, plant diseases commonly cause severe losses to agricultural production. Production is mainly based on chemical control, which not only makes it difficult for the medicine to be effective for a long time, but also seriously pollutes the environment. The application of pesticides to crops will greatly affect the quality, and seriously endanger human health, leading to human and animal poisoning and other consequences. With the strengthening of human awareness of environmental protection, vigorously developing green agriculture has become a requirement of the new era, and biological control, as the content of green agriculture, has attracted more and more attention. In the field of biologica...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the biocontrol bacteria for plant diseases are fungi and bacteria isolated from soil, rhizosphere or plant surface, but the ecological environment in which they live is affected by harsh environmental factors such as ultraviolet rays, storms and chemicals, resulting in Its colonization ability is poor, and it often has a certain control effect in the laboratory, but in the field production practice, the control effect is often unstable.

In addition, because biological control bacteria are generally sensitive to chemical fungicides and have a short validity period, it is difficult to prevent and control most diseases, which seriously limits their application range.

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