CAJ | 학술논문

随着Bt棉在我国的广泛种植,绿盲蝽Lygocoris lucorum Meyer-Dür的危害日益加重.化学防治作为棉田盲蝽综合治理的重要策略,仍是其主要的防治手段.本研究主要用闪烁管药膜法和点滴法两种测定方法评价了传统杀虫剂、新型杀虫剂等30种杀虫剂对绿盲蝽成虫的急性触杀毒力,其中多种杀虫剂是首次使用两种生测方法同时进行毒力测定.结果表明:有机氯类、有机磷类、氨基甲酸酯类和拟除虫菊酯类等传统杀虫剂对绿盲蝽成虫具有较高的触杀活性.8种对绿盲蝽成虫具有较高毒力的药剂,其中5种为传统杀虫剂,分别为马拉硫磷、毒死蜱、联苯菊酯、灭多威和硫丹.新型吡咯类杀虫剂对绿盲蝽表现出较高毒力,以氟虫腈的毒力最高,两种生测方法测定的LC_(50)分别为0.13 μg·mL~(-1) 和 0.15 μg·mL~(-1).而昆虫生长调节剂、抗生素类及植物源杀虫剂对绿盲蝽成虫没有明显的触杀活性.
수착Bt면재아국적엄범충식,록맹춘Lygocoris lucorum Meyer-Dür적위해일익가중.화학방치작위면전맹춘종합치리적중요책략,잉시기주요적방치수단.본연구주요용섬삭관약막법화점적법량충측정방법평개료전통살충제、신형살충제등30충살충제대록맹춘성충적급성촉살독력,기중다충살충제시수차사용량충생측방법동시진행독력측정.결과표명:유궤록류、유궤린류、안기갑산지류화의제충국지류등전통살충제대록맹춘성충구유교고적촉살활성.8충대록맹춘성충구유교고독력적약제,기중5충위전통살충제,분별위마랍류린、독사비、련분국지、멸다위화류단.신형필각류살충제대록맹춘표현출교고독력,이불충정적독력최고,량충생측방법측정적LC_(50)분별위0.13 μg·mL~(-1) 화 0.15 μg·mL~(-1).이곤충생장조절제、항생소류급식물원살충제대록맹춘성충몰유명현적촉살활성.
The economic importance of the green plant bug, Lygus lucorum Meyer-Dür, has become prominent in area where transgenic Bt cotton are widely planted in China. Controlling of green plant bugs relies mainly on insecticides, and chemical control is one of the important strategies used in IPM. This study was designed to assess acute contact toxicities of conventional and novel insecticides to green plant bugs by two different bioassay methods including glass-vial and topical application. Thirty insecticides, including organochlorines, organophosphates, pyrethroids, carbamates, nereistoxins, neonicotinoids, phenylpyrazoles, antibiotics, insect growth regulators (IGRs), and botanical insecticides were selected to investigate their toxicities against adult green plant bugs. Median lethal concentrations (LC_(50)) of some insecticides were first determined by the two methods. The results showed that in laboratory bioassays, general insecticides including organochlorines, organophosphates, carbamates and pyrethroids were highly toxic to adult green plant bugs. Five (malathion, chlorpyrifos, bifenthrin, methomyl and endosulfan) of eight most toxic insecticides on the bugs among all the test chemicals were general insecticides. Novel insecticides phenylpyrazole showed the highest acute contact toxicity, of which fipronil had the highest toxicity to green plant bugs. The LC_(50) values of fipronil by two bioassay methods were 0.13 and 0.15 mg·L~(-1), respectively. IGRs, antibiotics and botanical insecticides, however, had no obvious acute contact toxicity to adult green plant bugs.