苏云金芽孢杆菌和平沙绿僵菌混配对酒曲害虫大谷盗的毒杀效果研究

Research on Insecticidal Effects of Bacillus thuringiensis Mixed with M.pinshaense on Starter Insect Tenebroides mauritanicus

利用苏云金芽孢杆菌与平沙绿僵菌混配杀灭酒曲害虫大谷盗。研究结果表明,在温度30℃、相对湿度为73%～75%的条件下,苏云金芽孢杆菌与平沙绿僵菌液体制剂按1∶1比例混配后,使用量为5mL时,在杀虫第20天时可使大谷盗的死亡率与校正死亡率达100%。与试验前相比,酒曲的液化力、糖化力和发酵力分别下降了15.2%、2.0%和1.2%;酒曲中细菌数、霉菌数及酵母菌数分别下降了5.3%、0.3%和1.6%。

The starter insect Tenebroides mauritanicus could be killed by use of Bacillus thuringieusis mixed with M.pinshaense. The research results showed that as the temperature was at 30 ℃, the relative humidity was 73 %-75 %, the mixture ratio of Bacillus thuringiensis and M.pinshaeuse was 1：1, and the use level was 5 mL, the mortality and the corrected mortality of Tenebroides mauritanicus could reach up to 100 % 20 d after insect-killing. Compared with the starter before insect-killing, its liquefying power, saccharifying power, and fermenting power dropped by 15.2 %, 2.0 % and 1.2 % respectively, and the number of bacteria, mold and yeast in the s tarter decreased by 5.3 %, 0.3 % and 1.6 % respectively.