Compound bio-fertilizer containing toosendanin and its preparation method

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. 一种含有楝素的生物复合肥料，采用泡盛曲霉、莫氏球孢霉、枯草芽孢杆菌和白地霉作为菌种，菌种经培养扩大后按照3∶1∶3∶2制成混合菌剂；按照重量配比，将混合菌剂与有机化合物、尿素和磷矿粉混合后，再加入楝树种子粉制成含有楝素的生物复合肥料。按照本发明制备的含有楝素的生物复合肥料，具有抑制硝化作用，能够显著提高氮肥利用率，可使尿素的损失率减少50％，铵态氮肥或含氨的氮肥损失率减少25％；而且具有一定的避鼠杀虫功能，同时活化土壤养分，改善作物品质，促进植物生长，作物平均增产达25.7％。其配方合理，工艺简单，质量稳定，是一种新型的含有楝素的生物复合肥料。