印楝素对不同龄期茄二十八星瓢虫的毒力及田间防效
인련소대불동령기가이십팔성표충적독력급전간방효
Laboratory Toxicity and Field Efficacy of Azadirachtin to Henosepilachna vigintioctopunctata(Fabricius)in Different Instars
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