CAJ | 학술논문

采用室内生物测定和大田药效试验等方法,测定印楝素、苦参碱和烟碱对螺旋粉虱的室内生物活性与田间防治效果.结果表明,这3种杀虫剂均对螺旋粉虱具有较高的生物活性.其中在对螺旋粉虱成虫的毒力测定中,印楝素、苦参碱和烟碱LC_(50)值分别为0.0998、0.013 3、0.0023mg/L,对3龄若虫的LC_(50)值分别为1.6724、0.0593、0.031 5mg/L,对卵的LC_(50)值分别为1.2117、0.0340和0.011 3mg/L.大田药效结果表明,3种植物源杀虫剂对螺旋粉虱均有很好的防治效果和持效性,其中在1.00 mg/L的浓度下,药后5 d的防治效果仍在80%左右.
채용실내생물측정화대전약효시험등방법,측정인련소、고삼감화연감대라선분슬적실내생물활성여전간방치효과.결과표명,저3충살충제균대라선분슬구유교고적생물활성.기중재대라선분슬성충적독력측정중,인련소、고삼감화연감LC_(50)치분별위0.0998、0.013 3、0.0023mg/L,대3령약충적LC_(50)치분별위1.6724、0.0593、0.031 5mg/L,대란적LC_(50)치분별위1.2117、0.0340화0.011 3mg/L.대전약효결과표명,3충식물원살충제대라선분슬균유흔호적방치효과화지효성,기중재1.00 mg/L적농도하,약후5 d적방치효과잉재80%좌우.
Azadirachtin, Matrine and Nicotinamide were detected indoor and in the field to observe their indoor bioactivities and their field control effect against spiraling whitefly(Aleurodicus dispersus Russell). The results indicated that these 3 botanical pesticides all had high bioactivities against the spiraling whitefly. The lethal concentrations(LC_(50)) for Azadirachtin, Matrine and Nicotinamide againts adults of the spiraling whitefly were 0.099 8 mg/L, 0.0133 mg/L and 0.002 3 mg/L, respectively; the LC_(50) for 3~(rd) instar nymphs were 1.672 4, 0.059 3, 0.031 5 mg/L, respectively; and the LC_(50) for eggs were 1.211 7, 0.034 0, 0.011 3 mg/L, respectively. The field trial results indicated that Azadirachtin, Matrine and Nicotinamide had a good control and persistent effect against the spiraling whitefly, and still controlled about 80% of the spiraling whitefly at day 5 after treatment at the rate of 1 mg/L.