Composite microbial preparation for promoting growth of rape and preparation method thereof

Abstract

The invention relates to a composite microbial preparation for promoting the growth of rape and a preparation method thereof. The composite microbial preparation for promoting the growth of the rape is characterized by comprising 20-40 parts by weight of strain culturing substance and 60-80 parts by weight of microbial carrier, wherein the strain culturing substance comprises the following raw materials in parts by weight: 2-8 parts of bacillus subtilis, 2-8 parts of bacillus megaterium, 5-10 parts of rhodopseudomonas palustris and 1-4 parts of azotobacter chroococcum. The preparation method of the composite microbial preparation for promoting the growth of the rape comprises the following steps: culturing 2-8 parts of bacillus subtilis, 2-8 parts of bacillus megaterium and the rhodopseudomonas palustris together, culturing the azotobacter chroococcum independently, mixing and fermenting. The invention has the advantages of promoting the growth and the propagation of beneficial microorganisms, increasing the absorption of the root system of the rape to nitrogen, phosphorus, potassium and other organic substances and promoting the normal development of the root system, thus promoting the growth of the rape and reducing the applied chemical fertilizer.

Description

technical field [0001] The invention relates to a compound microbial preparation for promoting the growth of rapeseed and a preparation method thereof, which is applied to plant roots in soil to fix nitrogen in the air as organic nitrogen or supplement nitrogen in soil by salt, and belongs to the field of organic fertilizers. Background technique [0002] Rapeseed has an annual planting area of ​​about 8 million hectares in my country, and its seeds have an oil content of 30%-50%. It is an important oil crop in my country. For a long time, my country's rapeseed planting area and total output have ranked first in the world, accounting for about 30% of the world's rapeseed planting area and total output. After my country's accession to the WTO, various agricultural product markets in our country are faced with a long-term protected position and lack of strong market competitiveness. In addition, with the further development of the international market, whether my country's ra...

AI Technical Summary

Problems solved by technology

[0005] Existing photosynthetic microbial fertilizers are generally a single strain, and the activity of the bacteria is generally 10 6 -10 8 Cfu / gram, the function is relatively single, crops and microorganisms are only loosely combined, and there is no symbiotic organizational structure between them, so the nitrogen fixation activity is easily restricted by many conditions