五种杀虫剂对爪哇拟青霉生长的影响及其对斜纹夜蛾的联合毒力

五种杀虫剂对爪哇拟青霉生长的影响及其对斜纹夜蛾的联合毒力

马骏^1,3, 荣湘民², 刘强², 彭建文², 冯利¹, 肖芬¹

1生物安全科技学院;2资源环境学院, 湖南农业大学, 长沙 410128;3广东检验检疫技术中心植物检疫实验室, 广州 510623

收稿日期:2006-06-16 修回日期:1900-01-01 出版日期:2007-02-08 发布日期:2007-02-08

Effects of Five Insecticides on Growth of Paecilomyces javanicus Strain Px04, and Their Combinative Virulence to Spodoptera litura

MA Jun, RONG Xiang-min, LIU Qiang, PENG Jian-wen, FENG Li, XIAO Fen

School of Bio-safety Science and Technology, Hunan Agricultural University, Changsha 410128, China

Received:2006-06-16 Revised:1900-01-01 Online:2007-02-08 Published:2007-02-08

摘要/Abstract

摘要： 研究了锐劲特、美满、除尽、卡死克和高效氯氰菊酯5种杀虫剂对爪哇拟青霉Px04菌株的菌丝生长、孢子产量与萌发率的影响，以及这5种杀虫剂与Px04菌株对斜纹夜蛾的联合毒力。在高于推荐田间用量10倍以上浓度时，锐劲特（500mg/L）、美满（2400mg/L）和除尽（1000mg/L）对Px04菌株的菌丝生长、孢子产量与萌发率没有影响，但卡死克（500、50mg/L）能抑制菌丝生长、孢子产生和萌发；高效氯氰菊酯（100、10mg/L）也表现出较高程度的抑制作用。与Px04菌株混合使用时，卡死克和高效氯氰菊酯表现出拮抗（或减效）作用，锐劲特、美满和除尽表现出相加作用。在亚致死量下，锐劲特（30mg/L）和美满（40mg/L）能使Px04菌株的防治效果显著提高并提前见效，除尽（20mg/L）和高效氯氰菊酯（10mg/L）影响不明显，但卡死克（70mg/L）对防治效果有不良影响。

Abstract: The effects of fipfonil (Regent), methoxyfenozide, chlorfennapyr, flufenoxuron (Cascade)and beta-cypermethrin on the Px04 isolate of Paecilomyces javanicus were assayed in the laboratory. And the combinative virulence of the 5 insecticides with Px04 were tested. When the concentrations of chemical insecticides were higher than 10 times of field recommended dosage, chlorfennapyr (1000 mg/L), fipfonil (500 mg/L) and methoxyfenozide (2400 mg/L) had no negative effect on the production and germination of conidia spores and mycelia growth of isolate Px04, but flufenoxuron (100, 10 mg/L) inhibited completely the growth of the isolate, while beta-cypermethrin (500, 50 mg/L) had negative influence for fungal growth. For combination toxicity, beta-cypermethrin and flufenoxuron antagonized on the virulence of Px04, while fipfonil, methoxyfenozide, chlorfennapyr had additive effects. In sublethal dozen, fipfonil (30 mg/L) and methoxyfenozide (10 mg/L) had a synergetic effect on Px04 and caused Spodoptera litura to die faster, chlorfennapyr (20 mg/L) and beta-cypermethrin (10 mg/L) had no impact on isolate, but flufenoxuron (70 mg/L) and had side-effects to Px04.

马骏1,3 , 荣湘民2 , 刘强2 , 彭建文2 , 冯利1 , 肖芬1 . 五种杀虫剂对爪哇拟青霉生长的影响及其对斜纹夜蛾的联合毒力[J]. , DOI: .

MA Jun, RONG Xiang-min, LIU Qiang, PENG Jian-wen, FENG Li, XIAO Fen. Effects of Five Insecticides on Growth of Paecilomyces javanicus Strain Px04, and Their Combinative Virulence to Spodoptera litura[J]. , DOI: .