6种杀虫剂防治桃桑白蚧田间药效试验及评价

Field Efficacy Trial and Evaluation on Controlling Pseudoaulacaspis pentagona Targioni-Tozzetti with 6 Kinds of Pesticides

[目的]寻找防治桃桑白蚧的理想常规农药，为当地控制桃桑白蚧的流行提供科学依据。[方法]选用6种杀虫剂，进行9个处理、4次重复的田间药效试验，观察各杀虫剂防治桃桑白蚧的田间药效。[结果]以26％蚧必杀乳油2000．3000倍液和5％高效氯氰菊酯2000倍液对桃树桑白蚧的防效较为突出，其次为20％甲氰菊酯乳油2000倍液和2．5％蝽虱蚧桑乳油2000倍液；而当地常用的3％金世纪乳油2000倍液和48％乐斯本乳油2000倍液的药效显著低于以上杀虫剂。[结论]选用26％蚧必杀乳油2000-3000倍液、5％高效氯氰菊酯白色水乳剂2000倍液、20％甲氰菊酯乳油2000倍液、2．5％蝽虱蚧杀乳油2000倍液、48％乐斯本乳油2000倍液进行交替使用，可取得较好的防治桃桑白蚧的效果。

[Objective] The propose of the study was to look for perfect conventional pesticides of controlling Pseudoaulacaspis pentagona targioni-tozzetti so as to provide scientific basis for controlling locally epidemic P, pentagona targioni-tozzetti, [ Method] The field efficacy of every pesticide on controlling P. pentagona targioni-tozzetti was observed in the field efficacy trial with 9 treatments and 4 repetitions, and 6 chosen kinds of pesticides, [Result] The controlling effects of 26% Jiebisha emulsifiable concentrate （EC） diluted for 2 000 - 3 000 times and dilute solution of 5% beta-eypermethrin diluted for 2 000 times were mere outstanding, The controlling effects of 20% fenpropathrin EC and 2.5% Chunshijiesang EC all diluted for 2 000 times were next, The controlling effects of locally common 3% Jinshiji EC and 48% Lesiben EC all diluted for 2 000 times were significantly lower than that of the above pesticides. [Conclusion] The better controlling effects against P. pentogona targioni-tozzetti could be obtained by conducting alternative application of 26% Jiebisha EC diluted for 2 000 - 3 000 times, 5% high-active eypermethrin white aqueous emulsion diluted for 2 000 times, 20% fenpropathrin EC and 2,5% Chunshijiesang EC all diluted for 2 000 times, 48% Lesiben EC diluted for 2 000 times.