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室内毒力测定表明,在控制美国白蛾幼虫有效药剂中,印楝素、天然除虫菊素和苦参碱的LD50分别为1.87μ/g、3.75μ/g和4.69μ/g;功夫菊酯、高效氯氰菊酯、氰戊菊酯的LD50分别为6.95μ/g、13.47μ/g和53.94μ/g。快速防治美国白蛾幼虫药剂适宜选择生物农药天然除虫菊和苦参碱,化学农药4.5%高氯EC、80%敌敌畏EC、40%灭多威EC;初期或虫口密度较低时,建议选择生物农药8000I U/g B T WP和仿生农药25%灭幼脲SC和5%氟铃脲EC。
The indoor toxicity test showed that the LD50 of azadirachtin, natural pyrethrin and matrine were 1.87μ / g, 3.75μ / g and 4.69μ / g, respectively in the control of the effective dose of the American white moth larvae; The alpha-cypermethrin and fenvalerate LD50 were 6.95μ / g, 13.47μ / g and 53.94μ / g, respectively. Rapid control of the American white moth larvae suitable for the selection of biological pesticides natural pyrethrum and matrine, chemical pesticides 4.5% high chloride EC, EC 80% EC, 40% methomyl EC; initial or lower population density, it is recommended to choose biological pesticides 8000I U / g BT WP and biomimetic pesticides 25% chlorbenzuron SC and 5% hexaflumuron EC.