A special compound microbial fertilizer for tobacco with the function of strengthening seedlings and promoting roots and its preparation method

Abstract

The invention belongs to the technical field of agricultural microbiology, and discloses a special composite microbial fertilizer with the functions of strengthening seedlings and promoting roots for tobaccos. The special composite microbial fertilizer is prepared through adding, by dry weight, 1-4% of Bacillus thuringiensis bacterial solution and 1-4% of Paecilomyces lilacinus(Thorn.)Samson bacterial powder in a common tobacco seedling-raising substrate, wherein the abovementioned '%' represents the millilitre of the bacterial solution or the gram of the bacterial powder added per 100g of the common tobacco seedling-raising substrate, by dry weight. According to the special composite microbial fertilizer disclosed by the invention, specific tobacco rhizosphere functional bacteria are selected with regard to the tobaccos, and added into the common tobacco seedling-raising substrate in an activity-keeping manner, thus the raised seedlings can be strengthened, the root development can be promoted, high-quality seedlings with lots of active functional microbes in rhizospheres can be raised, the growth of the raised seedlings during a post-cultivation process can be promoted, the yield of the tobaccos can be increased and the quality of the tobaccos can be improved.

Description

technical field [0001] The invention belongs to the technical field of agricultural microorganisms, and in particular relates to a tobacco-specific compound microbial fertilizer capable of strengthening seedlings and promoting roots and a preparation method thereof. Background technique [0002] Flue-cured tobacco is an important economic crop in our country and occupies an important position in our national economy. In 2007, the tobacco planting area was 1.05 million hectares, and the tax revenue reached 388 billion yuan, ranking first in the individual tax revenue of all industries in the country. In flue-cured tobacco production, cultivating strong seedlings is one of the important links in flue-cured tobacco cultivation, and it is also an important measure to improve the yield and quality of flue-cured tobacco. Cultivating strong seedlings is the basis of high-quality and high-yield flue-cured tobacco. At home and abroad, great attention is paid to the cultivation of st...

AI Technical Summary

Problems solved by technology

At present, some domestic experts are trying to work in this area, mainly focusing on the use of AM mycorrhizal inoculation of existing substrates for seedling cultivation. Although some results have been achieved, the research is not systematic and in-depth, nor has it formed a large-scale promotion and has been recognized by the majority of farmers. The product

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