Microbial agent JF for preventing and treating corn stalk rot in saline-alkali soil and preparation method of microbial agent JF
A technology of microbial agent and corn stalk, which is applied in the field of microorganisms to achieve the effects of convenient transportation, lower ear weight, and lower soil pH
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[0030] The present invention provides a kind of microbial inoculant JF and preparation method thereof for preventing and treating corn stalk root disease, comprising the following steps:
[0031] Preparation of 1S microbial inoculum powder: seed the single colonies of activated Sonora desert Bacillus B-2, Bacillus paralicheniformis B-26, Sonora desert Bacillus N-16 and Bacillus pumilus N-17 Cultivation and fermentation culture, the four kinds of cultured bacterial liquids are adsorbed by adsorbents to obtain microbial inoculum powder; the four kinds of microbial inoculum powders are mixed according to the mass ratio of 1:1:1:1 to obtain a mixed powder; wherein, the The four strains mentioned above are all preserved in the General Microorganism Center (CGMCC) of China Microbiological Culture Collection Management Committee (CGMCC), and the preservation date is March 5, 2020; the preservation number of Sonora desert Bacillus B-2 is CGMCC NO.19454, deputy The preservation number ...
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[0041] (1) Compatibility between halophilic and alkaline antagonistic bacteria
[0042] Referring to the determination method of Barbosa, inoculate one functional strain on the solid medium plate of Horikoshi I or modified LB-I or modified LB-II medium, and inoculate another functional strain on the other half vertically. Each treatment was repeated 3 times. Place the plate in a biochemical incubator at 30°C for cultivation, observe and record the compatibility reaction between the two strains after 24 hours. The two strains that did not produce antibacterial bands were considered compatible, otherwise they were considered incompatible. Compatibility results see figure 1 .
[0043] Horikoshi I medium (g / L): glucose 10.0g, peptone 5.0g, yeast extract 5.0g, K 2 HPO 4 1.0g, MgSO 4 0.2g, Na 2 CO 3 10.0g (sterilized separately), 15-20g agar, pH 9.0, sterilized at 121°C for 20min.
[0044] Improved LB-I medium (75.0g / L NaCl): tryptone 10.0g, yeast extract 5.0g, NaCl 75.0g...
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