Soil conditioning bacterial agent and combination thereof with lime nitrogen

Abstract

The invention provides a soil conditioning bacterial agent. The soil conditioning bacterial agent is prepared from aspergillus niger, bacillus subtilis, bacillus licheniformis and streptomyces microflavus, and the bacteria are independently and separately stored in the bacterial agent or two or more of the bacteria are mixed together. The invention further relates to combination of the bacterial agent with lime nitrogen. The bacterial agent synergized with lime nitrogen is obtained through repeated screening, by means of combination, the soil flora structure can be improved, the economic indexes of crops can be increased, and the prevention and control effects on phoma macdonaldii, nematodosis, bacterial wilt and the like can be remarkably improved.

Description

technical field [0001] The invention relates to a soil improving bacterial agent and its combination with lime nitrogen. Background technique [0002] Tobacco is the main economic crop in my country, and it is of great significance to improve its yield, quality, economic indicators, and prevent and control diseases and insect pests. To prevent and control tobacco soil-borne diseases, many companies mainly adopt agricultural measures such as disease-resistant varieties and crop rotation in production. However, because disease-resistant varieties require diversification of disease-resistant genes and are greatly affected by the environment, the control effect is not ideal. Crop rotation is also one of the effective methods to prevent and control tobacco bacterial wilt, but due to the large number of people in our country and the lack of land, normal crop rotation measures in production cannot be realized. [0003] The technical group has cooperated with many domestic tobacco ...

AI Technical Summary

Problems solved by technology

To prevent and control tobacco soil-borne diseases, many companies mainly adopt agricultural measures such as disease-resistant varieties and crop rotation in production. However, because disease-resistant varieties require diversification of disease-resistant genes and are greatly affected by the environment, the control effect is not ideal

Crop rotation is also one of the effective methods to prevent and control tobacco bacterial wilt, but due to the large number of people in our country and the lack of land, normal crop rotation measures in production cannot be realized

[0003] The technical group has cooperated with many domestic tobacco companies for many years, and has conducted in-depth research on the prevention and treatment of tobacco soil-borne diseases by microorganisms and lime nitrogen. After searching, there are few studies on the impact of lime nitrogen application on the soil microbial community structure; The killing effect in the medium is non-selective, which will form a "biological vacuum" in the sterilized soil; the combination of lime and nitrogen with compound bacteria, especially the research on the prevention and treatment of black shank and nematodes, and the improvement of tobacco economic indicators, has not yet been reported. Black shank is a serious tobacco soil-borne disease, which usually infects the roots of tobacco, causing diseases of crop roots and even the whole plant, resulting in significant economic losses.

Images