Bacillus subtilis microbial agent and preparation method and application thereof

Abstract

The invention provides a bacillus subtilis microbial agent, and belongs to the technical field of microorganisms. Specifically, bacillus subtilis is JQ-0101D and is preserved in the China General Microbiological Culture Collection Center, the address of the preservation unit is No. 1 Courtyard, West Beichen road, Chaoyang District, Beijing, the preservation time is March 19, 2021, and the preservation registration number is CGMCC No. 22039. The bacillus subtilis is cultured and fermented to form the microbial agent, and the microbial agent can effectively inhibit pythium, phytophthora and fusarium, has a good biocontrol effect on root rot of araliaceae ginseng plants, and has a certain promoting effect on growth and reproduction of acidobacteria.

Description

technical field [0001] The invention relates to the technical field of microorganisms, in particular to a bacillus subtilis inoculant and its preparation method and application. Background technique [0002] Continuous cropping obstacle refers to the abnormal growth and development of crops caused by continuous cultivation of the same crop or related crops on the same soil. Symptoms are generally poor growth and development, decreased yield and quality, and in extreme cases, local dead seedlings, no seedlings or vigorous seedlings; most of the affected plants have browning, reduced branches, low vigor, and narrow distribution range, resulting in water absorption. , The capacity of nutrients is reduced. [0003] Ginseng and American ginseng are strictly forbidden to be continuously used as medicinal plants. If ginseng is continuously planted in heavy stubble land, the survival rate of ginseng seedlings will generally drop to below 30% after the second year, and the fibrous r...

AI Technical Summary

Problems solved by technology

Therefore, the obstacle of continuous cropping of old ginseng land has become a major technical problem that has plagued the development of ginseng industry

The growing environment of Panax notoginseng is special, the planting area is limited, and there are serious continuous cropping obstacles

Continuous cropping shows that almost all plants die, and shortening the rotation period shows severe disease and low seedling preservation rate, resulting in low yield and poor quality

[0004] At present, the easiest way to solve the obstacle of continuous cropping is to rotate crops and plant in different places. However, ginseng, American ginseng and Tianqi are perennial herbaceous plants. 2 In old ginseng areas such as Fusong, Jingyu, and Ji'an, there are basically no forests to cut down; although ginseng is planted (planted) at the same time as the forest, but due to the single tree species, the loss of biodiversity, the obvious increase of soil erosion, and the ability to conserve water resources A series of ecological problems, such as the decrease of soil fertility, the imbalance of forest ecological balance, etc., have posed a serious threat to the ecological environment of Changbai Mountain.

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