CAJ | 학술논문

室内生测结果表明，虫酰肼(RH-5992)对水稻二化螟Chilo suppressalis具有较高的拒食活性，2 mg/L以上可使4龄二化螟在2 d内停止取食，而0.2 mg/L即可显著抑制其生长发育，导致幼虫最终不能化蛹。虫酰肼对不同日龄二化螟均具有较高活性，对初孵蚁螟，40 mg/L的杀虫效果高达97.8%，对于1～7日龄幼虫，120 mg/L的防治效果均在90%以上。虫酰肼对二化螟的致死历程较长，致死时间因浓度和二化螟龄期不同而变化，浓度增加对l～4龄各龄期致死时间影响较小，而6龄时，随浓度增加，致死时间明显缩短；在同一低浓度下，随着虫龄增加，致死时间明显延长，高浓度下，致死时间与龄期增加无明显相关性。虫酰肼无杀卵活性，对卵寄生蜂安全。田间试验表明，20%虫酰肼(F)1.5 L/hm2对二化螟、大螟Sesamia inferens、三化螟Scirpophaga incertulas枯心和稻纵卷叶螟Cnaphalocrocis medinalis均有良好的控制效果。
실내생측결과표명，충선정(RH-5992)대수도이화명Chilo suppressalis구유교고적거식활성，2 mg/L이상가사4령이화명재2 d내정지취식，이0.2 mg/L즉가현저억제기생장발육，도치유충최종불능화용。충선정대불동일령이화명균구유교고활성，대초부의명，40 mg/L적살충효과고체97.8%，대우1～7일령유충，120 mg/L적방치효과균재90%이상。충선정대이화명적치사역정교장，치사시간인농도화이화명령기불동이변화，농도증가대l～4령각령기치사시간영향교소，이6령시，수농도증가，치사시간명현축단；재동일저농도하，수착충령증가，치사시간명현연장，고농도하，치사시간여령기증가무명현상관성。충선정무살란활성，대란기생봉안전。전간시험표명，20%충선정(F)1.5 L/hm2대이화명、대명Sesamia inferens、삼화명Scirpophaga incertulas고심화도종권협명Cnaphalocrocis medinalis균유량호적공제효과。
The action of tebufenozide(RH-5992) on Chilo suppressalis was investigated by bioassay and field evalution. Tebufenozide disrupted the growth and developing of striped stem borer. The 4 th instar larvae fed with tebufenozide in a dosage higher than 2 mg/L ceased feeding within 2 days, and larvae fed with 0.2 mg/L tebufenozide developed more slowly than the control. Under the concentration of 40 mg/L and 120 mg/L tebufenozide has high efficacy on neonate and 1 to 7-day-old larvae ,respectively. The lethal duration varied with the concentration of tebufenozide and larvae instar.The duration of 1～4 th instar larvae was shortened slightly with the increase of the tebufenozide concentration, and it was obvious for 6 th instar larvae. The lethal duration of Chilo suppressalis under lower concentration of tebufenozide was shortened with the increase of larva instar, but was not shortened under higher concentration. Tebufenozide was not effective to eggs and was safe for parasitic wasps. Plot experiment in paddy showed that a dosage of 1.5 L/hm2 could control Chilo suppressalis, Scirphopaga incertulas, Sesamia inferens and Cnaphalocrocis medinalis effectively.