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以拒食率和死亡率为标准 ,用生长在青海的 1 8种高原植物甲醇提取物对菜粉蝶 5龄幼虫的生物活性进行测定 ,筛选出高效杀虫植物———瑞香狼毒
The antifeedant rate and mortality as the standard, with the growth of Qinghai in 18 kinds of plateau plant methanol extract of Pieris rapae 5th instar larvae biological activity were screened out highly efficient insecticidal plants - Stellera chamaejasme