Microbial agent with preventive and therapeutic effect on strawberry root rot

Abstract

The invention relates to a microbial agent with preventive and therapeutic effect on strawberry root rot. The microbial agent is characterized in that the microbial agent comprises Burkholderia phytofirmans liquid and a synergist; Burkholderia phytofirmans is preserved by the general microbiology center of the China Committee for Culture Collection of Microorganisms at No. 3, yard 1, beichen westroad, Chaoyang district, Beijing, the institute of microbiology of Chinese academy of sciences, with preservation number CGMCC No.15326 and preservation date January 29, 2018. The synergist is a mixedliquied of chlorothalonil and hymexazol 4000-5000 liquid, the ratio of the chlorothalonil to hymexazol is 1:8-8:1. The bacterial fertilizer has good colonizing ability in strawberry rhizosphere, is safe and reliable, has good degradation effect on root rot germs in continuous cropping strawberry soil, obviously improves the physical and chemical properties of the soil, promotes the stress resistance of strawberry plants, and improves the yield and fruit quality of strawberries.

Description

technical field [0001] The invention relates to the field of biological control, in particular to a microbial bacterial agent capable of preventing and controlling strawberry root rot. Background technique [0002] The occurrence of strawberry root rot is closely related to the change of soil environment. Generally, the disease is mild or not in the field of continuous cropping; the disease is serious in the field of heavy cropping. With the increase of the number of heavy cropping, the incidence rate gradually increases, and the fruit yield decreases accordingly. . The root system of strawberry root rot is shorter and darker than that of healthy plants, and the adventitious roots in the underground part die in large numbers, and the new roots are attacked by pathogenic bacteria and grow sparsely. The roots are damaged, the absorption capacity decreases, and the water, inorganic substances and nutrients cannot be transported normally, resulting in weak aerial parts or whole...

AI Technical Summary

Problems solved by technology

[0005] For strawberry farmers, during the 3-4 years of strawberry picking, frequent crop rotation will lead to lower economic benefits, and the method of fertilization will easily cause adverse consequences such as injury to seedlings, and single chemical control will cause drug resistance and strawberry quality decline