Compound bio-fertilizer containing toosendanin and its preparation method

Abstract

The biological composite fertilizer containing margosine is prepared through culturing with Bacillus subtilis, geotrichum candidum and other mold varieties to form mixed bacterial preparation; and mixing the mixed bacterial preparation with organic compound, urea, phosphate ore powder and chinaberry seed powder in certain proportion. The biological composite fertilizer containing margosine can inhibit nitrification, raise the utilization of nitrogen fertilizer, produce certain mouse repelling effect, active soil nutrients, improve quality of crop, and promote crop growth.

Description

technical field

[0001] The invention belongs to biological fertilizers, in particular to a biological compound fertilizer containing neemin and a preparation method of the fertilizer. Background technique

[0002] Urea is the largest amount of nitrogen fertilizer in Asia and even the world, accounting for more than 85% of nitrogen fertilizer production. However, after nitrogen fertilizer is applied, it is easily decomposed into ammonia under the action of urease. A part of ammonia volatilizes in a gaseous state, especially in soils with high pH, ​​and its loss rate is as high as 50% or more; a part of ammonia is oxidized by nitrifying bacteria into nitrate nitrogen, which will be lost by leaching and denitrification. The utilization rate of nitrogen fertilizer is usually only 40% to 45%, or even lower. For this reason, N carriers and nitrification inhibitors for crop nitrogen fertilizers are being developed all over the world to improve the efficiency of nitrogen fertilize...