Phosphorus and potassium decomposing biological organic fertilizer and preparation method thereof

Abstract

The invention relates to a phosphorus and potassium decomposing biological organic fertilizer prepared from bacillus megatherium and Bacillus mucilaginosus. The fertilizer comprises the following components in percentage by weight: 30-40% of animal dung, 20-30% of kitchen waste, 15-25% of humic acid, 15-20% of crop straw, 1-2% of microelements and 4-6% of culture. A preparation method of the fertilizer comprises the following steps of: 1, inoculating bacillus megatherium to a nutritional gravy culture medium and the bacillus mucilaginosus to a silicate bacteria culture medium, and spraying a seed liquid after primary and secondary cultures onto a carrier to prepare conidial powder; 2, uniformly mixing 30-40% of animal dung, 20-30% of kitchen waste, 15-25% of turf, 15-20% of straw powder, 1% of potassium dihydrogen phosphate, 1% of zeolite powder, 1% of lime, 3-5% of boric sludge and 1% of gypsum; adjusting water content to 50-60% and stacking the materials into a fermentation tank; adding enzyme microorganisms and turning over mechanically; and fermenting for 3-4 weeks and drying, and crushing to obtain a finished product and packaging. According to the biological organic fertilizer, not only is the soil capacity enhanced, but also nutritional elements which can be absorbed and utilized are provided for crops.

Description

technical field [0001] The invention relates to an organic fertilizer, in particular to a phosphorus-dissolving and potassium-dissolving bio-organic fertilizer and a preparation method thereof. Background technique [0002] In my country's grain production, the nutrient input of chemical fertilizers accounts for about 80%-90%, and the nutrient input of organic fertilizers only accounts for 10%-20%. However, the amount of organic fertilizer used in developed countries such as Europe, America, and Japan has reached the total amount of fertilizer used 20 or 30 years ago. It has become an internationally recognized standard for soil sustainable development. The amount of chemical fertilizers used in my country is seriously excessive. The amount of urea used per mu of arable land in my country is more than twice that of the United States, more than three times that of Japan, and more than eight times that of Australia. The excessive use of chemical fertilizers not only caused a s...

AI Technical Summary

Problems solved by technology

The excessive use of chemical fertilizers not only caused a serious decline in soil organic matter, but also caused a series of ecological problems such as soil compaction, salinization, and water eutrophication, which seriously affected my country's food security and ecological security.