【摘要】 荔枝蝽卵平腹小蜂(Anastatus japonicus Ashmead)(以下简称“平腹小蜂”)是荔枝蝽(Tessaratomapapillosa Drary)卵期寄生蜂的优势种,本研究以保护天敌为目的,探索三种常用的有机磷类杀虫剂对平腹小蜂的毒性大小与温度间的关系.实验选用喷雾气压恒定为2kg/cm~2、时间自动控制为3秒的ZHL97型喷雾器系统对荔枝蝽卵平腹小蜂进行药剂处理.结果表明,在22—30℃、70土5%R.H,14L:10D光照条件下.三种药剂对荔枝蝽卵平腹小蜂的毒性均随温度的升高而增大;三种药剂对平腹小蜂的毒性大小排序因处理后温度的不同而不同,26℃下与厂家对药剂标定的毒性大小一致:甲胺磷(高毒)>乐果(中毒)>敌百虫(低毒).更多还原

【Abstract】 Indoor experiment was conducted to test the toxicity of three phosphorus pesticides to the superiority parasitoidwasp, Anastatus japonicus Ashmead, of Tessaratomer papillosa. The constant environmental conditions were as followings:22-30℃,70±5%R. H. and 14L:10D. The air spray press is the same as 2kg/cm2 with 3 seconds of spray time.Results indicated that the toxicity of the pesticides to A. japonicus increased while the temperature going up. The toxicity sequences of the pesticides were not the same due to different temperatures.更多还原