论文部分内容阅读
选择4种生物杀螨剂进行了田间防治土耳其斯坦叶螨(Tetranychus turkestani Ugarov & Nikelski)的药效试验,并采用浸玻片法和叶片残效法测定其毒力。结果表明:制剂用量10%浏阳霉素EC225 mg/hm2、2%阿维菌素EC450 mg/hm2对土耳其斯坦叶螨具有较好的防治效果,施药后7d防效为91.69%和79.69%。10%浏阳霉素EC、2%阿维菌素EC对土耳其斯坦叶螨的毒力浸玻片法LC50值和LC90值分别为0.0083、0.0124 mg/L和0.148、0.267 mg/L;叶片残效法LC50值和LC90值分别为0.0085、0.0046 mg/L和0.083、0.143 mg/L。
Four kinds of biotic acaricides were selected to test the efficacy of Tetranychus turkestani Ugarov & Nikelski in the field, and their toxicity was determined by the methods of immersion slide and leaf residue. The results showed that the dosage of 10% Liuyangmycin EC225 mg / hm2, 2% abamectin EC450 mg / hm2 had good control effect on Tetranychus cinnabarinus, and the control effect was 91.69% and 79.69% on the 7th day after application. The LC50 values and LC90 values of 10% liomyocin EC and 2% abamectin EC on T. turkestani were 0.0083,0.0124 mg / L and 0.148,0.267 mg / L, respectively; The LC50 and LC90 values were 0.0085, 0.0046 mg / L and 0.083, and 1.43 mg / L, respectively.