Bacterial strain and microbial agent for preventing and curing apple tree rotten diseases and preparation method of microbial agent

Abstract

Provided are a bacterial strain and a microbial agent for preventing and curing apple tree rotten diseases and a preparation method of the microbial agent. The strain 61239 is preserved in China Center for Type Culture Collection which is called CCTCC for short on July 1st, 2015, and the preservation number is CCTCC M2015420. The invention further comprises the microbial agent containing chaetomium globosum for preventing and curing the apple tree rotten diseases and the preparation method of the microbial agent. Biological control fungi come from the natural world, pollution, public hazards and residues do not exist, toxic and side effects on people and livestock do not exist, the safety is achieved for apple trees, human bodies and ecological environments, the biological control fungi can be applied to any growth period of the apple trees, specially a dormant period, no resistance is produced, and the apple rotten diseases can be thoroughly controlled and radically cured. It is proved through experiments that specificity of the chaetomium globosum strain 61239 to apple tree rotten germs is high, the control effect is good, and the average control effect is 95 percent or above.

Description

technical field [0001] The invention relates to a bacterial strain, a microbial agent and a preparation method thereof, in particular to a bacterial strain for preventing and treating apple tree rot, a microbial agent and a preparation method thereof. Background technique [0002] Apple tree rot (Valsa cankerofapple) is a regional disease, mainly occurs in my country, Japan and Korea, and sporadically distributed in the United States, Canada, Britain and Russia. In history, there have been five rot disease pandemics in my country, which have caused devastating blows to the apple industry in various periods. Since the 1950s, the use of protective chemical fungicides to spray the whole garden to prevent the disease, as well as surgical scaling and smearing of systemic therapeutic fungicides on the diseased parts of apple trees have failed. achieve the desired effect. [0003] In recent years, the prevention and treatment of apple rot disease still uses chemical agents as the...

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Problems solved by technology

For example, Duan Zemin, Wang Xianping, Zhou Boling, etc. Research on pollution-free control technology of apple tree rot [J], Shanxi Agricultural Sciences, 2002, 30 (4): 55-59 discloses the use of multi-flavored traditional Chinese medicines such as capillary, flavescens and skullcap. It is used for the prevention and treatment of rot disease, but the composition of traditional Chinese medicine is complex, the extraction process is cumbersome, and the production cost is high, so it is difficult to be widely used

Jiao Rongbin. A new drug for the prevention and treatment of apple rot disease - antibiotic S-921[J], Hebei Agricultural Science and Technology, 1988, 3:15 disclosed that agricultural antibiotic S-921 has a good therapeutic effect on apple rot disease lesions, but it cannot solve the old scar recurrence

Mao Zhenchuan, Wang Guirong, Wei Jianmei, etc. Inhibitory effect of Trichoderma on apple rot pathogen [J], Hebei Guoshu, 1999, 4:12-13, using Trichoderma as a biocontrol fungus to control apple rot, but affected by the environment Large, difficult to colonize in the field for a long time, and has not been used in apple production so far

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