用以芽胞杆菌为主体的复合微生物制剂对高密度主养鲫 (Carassiusauratus)池塘中生态因子进行调控。菌剂含活菌数为 10 9/g ,首次施放 1 5mg/L ,之后每隔 15d施放 0 75mg/L。养成期与鱼种期两个阶段的试验表明 :鲫池投放菌剂后 ,能有效改善水质条件 ,在降低总氨氮及分子氨方面效果显著 ;对增加溶氧、降低亚硝酸盐也有一定作用。能营造清新的黄绿色藻相。硅藻、裸藻易成为优势种群 ,对减少蓝藻丝状藻类繁殖有明显效果。能促进鲫生长 ,增加其产量 The biological factors in the ponds of Carassius auratus were controlled by Bacillus subtilis as the main compound microorganism preparation. The viable bacterial count was 10 9 / g, for the first time 15 mg / L was administered and then 0 75 mg / L was administered every 15 days. The results of two stages of developmental stage and fish species showed that the carp pond could effectively improve the water quality after it was inoculated with bacteriocin, which had a significant effect on reducing total ammonia nitrogen and molecular ammonia, and also had some effects on increasing dissolved oxygen and reducing nitrite . Can create a fresh yellow green algae phase. Diatoms, euglena easy to become the dominant species, to reduce filamentous algae cyanobacteria have a significant effect of reproduction. Can promote the growth of crucian carp and increase its production