几种杀虫剂对柑橘潜叶蛾自然种群控制作用的评价

Evaluation on the controlling effects of eight insecticides on the natural population of citrus leaf-miner

利用以作用因子组建的生命表和干扰作用控制指数评价了果园8种常用杀虫剂对柑橘潜叶蛾自然种群的控制作用。结果表明,97%石蜡油EC、3%莫比朗EC、10%吡虫啉WP、20%好年冬EC、2.5%功夫EC和18%杀虫双AS均能较好地防治柑橘潜叶蛾。其中以97%石蜡油EC防治效果最佳,种群趋势指数为0.0055,其干扰作用控制指数0.0010;其次为3%莫比朗EC、10%吡虫啉WP、20%好年冬EC、2.5%功夫EC、18%杀虫双AS,其种群趋势指数分别为0.0136、0.0137、0.0548、0.1460、0.4332,其干扰作用控制指数依次为0.0025、0.0026、0.0103、0.0273、0.0811;5%抑太保EC和48%乐斯本EC控制作用效果较差,其种群趋势指数分别为2.2995和2.9130,干扰作用指数分别为0.4305和0.5454,反而助长柑橘潜叶蛾自然种群的次代增长,生产上不提倡使用这类杀虫剂防治柑橘潜叶蛾。

The life tables grouped according to various factors,the index of population trend （Ⅰ）and the interference index of population control（ IIPC）were used as the basic sampling parameters to evaluate the controlling effects of eight commonused insecticides on the natural population dynamics of the citrus leaf-miner（CLM）Phyllocnstis citrella Stainton. Results indicate that petroleum oil, acetamiprid, imidacloprid, carbosulfan, lambda-cyhalothrine and dimthypo present better interfeting effects on CLM. Among all the insecticides,97 % petroleum oil EC applied with 1/500 concentration shows the best controlling effects on the population dynamics of the CLM, its index of population trend （ Ⅰ ） of the CLM decreases to 0.0055 from 5.3412 of the control, and its IIPC is 0.0010. The IIPC of 3 % acetamiptid EC applied with 1/2000 concentration, 10 % imidacloprid WP applied with 1/3000 concentration, 20 % carbosulfan EC applied with 1/2000 concentration,2.5 % iambda-cyhalothrine EC applied with 1/2000 concentration, 18% dimthypo AS applied with 1/1500 concentration,5 % chlorfluazuron EC applied with 1/4000 concentration and 48 % chlorpyrifos EC applied with 1/3000 concentration are 0.0025,0.0026,0.0103,0.0273,0.0811,0.4305 and 0.5454, respectively. According to the above results, petroleum oil is suitable for the pesticide application guideline for green food production. Acetamiprid, imidacloprid, carbosulfan,lambda-cyhalothtine and dimthypo could be selected as alternative insecticides. Chlorpyrifos and chlorfluazuron are not advocated to control CLM in the grove.