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鱼藤根粉的溶剂提取物对蔬菜、果树、烟草等作物主要害虫的作用活性和药效进行测定的结果表明，其提取物对害虫具有强烈的触杀、拒食和致畸等作用。鱼藤精乳油对害虫的触杀ＬＣ（５０）（致死中浓度，ｍｇ／Ｌ，下同）是：柑桔红蜘蛛４．６３；菜青虫３４．５３；萝卜蚜１６．８３；桃蚜５７．２９；萝卜蚜和桃蚜混合种群２３．４１；桔蚜１０．２４。鱼藤根粉各溶剂提取物对菜青虫幼虫ＬＣ（５０）是：丙酮３３．２６；乙醇３４．５１；苯３９．３４。用三龄菜青虫幼虫测定，其拒食效果是：５０ｍｇ／Ｌ纯鱼藤酮为９１．９５％；丙酮提取物５０ｍｇ／Ｌ为８０．９１％，１００ｍｇ／Ｌ为９７．９２％；在试验期间内，供试的叶片几乎没有被取食。用丙酮提取物０．２８μｇ／头点滴四龄幼虫７天后，仅有１３％的幼虫能正常化蛹，而对照达７６．６７％。用２．５％鱼藤精乳油２５０倍防治田间害虫效果是：菜青虫接近５％高效氯氰菊酯（ａｌｐｈａｃｙｐｅｒｍｅｔｈｒｉｎ）２０００倍效果，明显高于５０％乐果（ｄｉｍｅｔｈｏａｔｅ）１０００倍效果；柑桔红蜘蛛：药后４８ｈ效果与７３％克螨特（ｐｒｏｐａｒｇｉｔｅ）１０００倍相当；而对萝卜蚜和桃蚜混合种群、核蚜、桔蚜等与５０％乐果１０００倍?
The results showed that the extract had a strong contact toxicity, antifeedant and teratogenic effects on pests. Rotenone EC for pest contact LC (50) (lethal concentration, mg / L, the same below) are: citrus red spider 4.63; Pieris rapae 34.53; radish aphids 16.83; 29; mixed population of radish aphids and peach aphids 23.41; orange aphid 10.24. The LC (50) of each solvent extract of Rhizoma Anemarrhenae powder to Pieris rapae was: acetone 33.26; ethanol 34.51; benzene 39.34. The results showed that the antifeedant effect was: 95% rotenone was 91.95%; acetone extract 50mg / L was 80.91% and 100mg / L was 97.92%; during the test period, The leaves tested were barely eaten. After 7 days with acetone extract at 0.28 μg / head for fourth instar larvae, only 13% of the larvae normalized pupae compared to 76.67% of controls. The effect of preventing and curing field pests with 250% 2.5% rotenone EC was: cabbagewort close to 5% alpha-cypermethrin 2000 times, significantly higher than 50% dimethoate 1000 times; citrus red spider: After 48h, the effect is equivalent to 1000 times of 73% propargite. For the mixed population of radish aphid and green peach aphid, nucleoside aphid and orange aphid are 1000 times higher than 50% dimethoate.