摘要： 在含有Bt毒素的人工饲料中，通过加入碱性化合物提高其对昆虫中肠的作用，或加入蛋白酶激活剂、无机化合物和有机物来提高Bt的毒力效价。试验结果表明，加入碳酸钙、硫酸锌、氯化镁、苹果酸、马来酸、甲酸和巯基乙醇酸钠，可使Bt毒力效价分别提高0.95，1.22，0.37，0.45，1.17，2.10和9.0倍，其中加入硫酸锌、甲酸和巯基乙醇酸钠的增效效果较好。
关键词:
苏云金杆菌,
毒力效价,
化学增效剂
Abstract: The potency of endotoxin preparation of Bt.(Cs3ab-1997) was increased through the addition of either alkaline compounds naturally occurring in the insect midgut, general proteolytic activators or midly toxic compounds of inorganic and organic nature along with endotoxin in the diet. The results showed that the potency of endotoxin preparation of Bt. was increased by 0.95, 1.22, 0.37, 0.45, 1.17, 2.10 and 9.0 times, respectively, after the addition of calcium carbonate, ZnSO4, magnesium chloride, apple acid, Maleic acid, C2H4O2 and HSCH2COONa, of which ZnSO4, C2H4O2 and HSCH2COONa were more effective at the tested concentrations.
Key words:
Bt,
Endotoxin potency,
Synergist
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Yin Xinming, Guo Xianru, Jia Xincheng, Wu Yunhan, Qou Liyou. Studies on the Enhancement of Bacillus thuringiensis Efficacy Against Heliothis armigera (Lep.:Noctuidae)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1999, 14(2): 67-72. doi: 10.3321/j.issn:1000-7091.1999.02.014.