灭幼脲杀虫剂对几种有益昆虫的影响

INFLUENCE OF DIMILIN AND BENZOPHENOLUREA NO.3 ON SEVERAL NATURAL ENEMIES

摘要:

1978～1982年在公主岭,应用灭幼脲杀虫剂对天敌昆虫:异色飘虫Leis axyridis(Palas)龟纹飘虫Propylaca japonica(Tkunbers)、中华草蛉Chrysopa sinica(Tjeder)的成虫、卵、幼虫及蛹进行室内试验及田间调查。结果表明灭幼脲1号15、25、50克/公顷(有效成分,以下同);灭幼脲3号75、150、300克/公顷药量对异色瓢虫和龟纹瓢虫基本无影响,对中华草蛉杀伤严重。

Abstract:

The insect growth regulator (TGRs), Dimilin and Benzophenol Urea No..3(1-(4-chloropheny)-3-(2-chlorobenzoyl) urea) have been shown to be effective against the. Armyworm (Mythimna sepatata walker) and several fruit pests. The objective of two IGRs to the adults, eggs, larvae and pupae of Leis axvridis (Pallas), Propylaca japonica (Thunberg) and Chrysopa sinica (Tjeder) have been taken in the laboratory and fields during. 1978-1982 in Gongzhuling, Jilin Province.
Results of these studies indicated that toxicity of application of Dimilin at rates of 15, 25, 50g/ha(ai) and of Benzophenol Urea No.3 at rates of 75, 150 and 300g/ha(ai) were not significant to Leis axyridis (Pallas) and Propylaca japonica (Thunberg), but caused Significant mortality to Chrysopa sinica (Tjeder). Treatment with Dimilin (applied at 30g/ha(ai)) and BenzoPhenol Urea No. 3 (applied at 150, 300g/ha(ai)) in scale-feilds for controlling Armyworm did not appear adverse influence to lady beetles.