Multi-element compound microbial fertilizer and production method thereof

Abstract

The invention discloses a multi-element compound microorganism fertilizer. The multi-element compound microorganism fertilizer is a potassium-rich multi-element compound microorganism fertilizer which is made by using potassium-oxide-rich potassic shale and humic acid as main raw materials, using bacillus mucilaginosus SCUP-76-8 as a potassium-solubilizing strain, using bacillus megaterium as a phosphate-solubilizing strain, using Frankia fgc6 as a nitrogen-fixing strain and performing fermental cultivation on the potassic shale and the humic acid. A production method of the multi-element compound microorganism fertilizer comprises the following steps: preparing potassic shale powder, humic acid powder, castor cake powder, a potassium-solubilizing bacteria fermentation liquor, a phosphate-solubilizing bacteria fermentation liquor and a nitrogen-fixing bacteria fermentation liquor respectively, uniformly mixing the potassic shale powder, the potassium-solubilizing fermentation liquor and the phosphate-solubilizing bacteria fermentation liquor in the mass volume ratio of 1:1:0.8, aerobically fermenting the mixture under a certain condition for 7-9 days, and naturally drying the fermented mixture; uniformly mixing the humic acid powder, the castor cake powder and the nitrogen-fixing bacteria fermentation liquor in the mass volume ratio of (5-8):1:1, aerobically fermenting the mixture under a certain condition for 10-12 days, and naturally drying the fermented mixture; and uniformly drying the activated potassic shale powder and the nitrogen-fixing bacteria humic acid as well as the castor cake powder in the mass ratio of (58-63):(37-42), and drying the mixture to obtain a finished product.

Description

technical field [0001] The invention relates to a compound fertilizer, in particular to a multi-element compound microbial fertilizer which uses potassium feldspar as a main raw material and is rich in microorganisms that efficiently decompose potassium to potassium feldspar, dissolve phosphorus and fix nitrogen, and a production method thereof. Background technique [0002] Plant growth and development require a variety of elements in different quantities, especially a large amount of nitrogen, phosphorus, and potassium. In order to meet people's increasing demand for various plants, traditional organic fertilizers obviously cannot meet the needs of plants. Therefore, industrial production of a large amount of nitrogen, phosphorus, and potassium chemical fertilizers has always been considered the main way to achieve this purpose. However, as the use of chemical fertilizers continues to increase, its negative impacts are becoming more and more obvious, prominently manifested...

AI Technical Summary

Problems solved by technology

CN100343202C discloses a kind of biological multi-element phosphorus and potassium fertilizer, which is made by crushing potassium shale and adding phosphorus and potassium decomposing bacteria to ferment it. The defect of this fertilizer is that it contains less elements and the effective potassium content is not enough

The applicant discloses a biomineral compound fertilizer and its production method (CN101475417A), which consists of 70%-80% potassium shale powder and 20%-30% humic acid after potassium decomposing, phosphorus decomposing and enzyme bacteria fermentation Due to the weak ability of potassium-dissolving bacteria and the large proportion of potassium shale in compound fertilizer, the available potassium released from potassium shale is low, and the comprehensive performance of compound fertilizer to improve soil is small , the scope of application is limited