为筛选出更加有效的杀螨植物,采用玻片浸渍法测定了20种植物的乙醇提取物对桔全爪螨的生物活性,结果表明,石椒草、臭灵丹、香茶菜和葎草对桔全爪螨有明显的触杀作用,LC50分别为0.9241、0.9827、0.9905、1.0196 mg.mL-1。这4种植物的杀卵活性测定表明,石椒草具有显著的杀卵作用,0.008 g.mL-1杀卵率达91.87%,其杀卵LC50为1.7032 mg.mL-1。 In order to screen more effective acaricidal plants, the bioactivity of ethanol extracts of 20 species of plants against Panonychus citri was determined by the glass slide dipping method. The results showed that, There was a clear contact action on the orange mites, LC50 were 0.9241,0.9827,0.9905,1.0196 mg.mL-1. The ovicidal activity of these four plants showed that Zanthoxylum bungeani had a significant ovicidal effect, the rate of killing eggs was 91.87% at 0.008 g.mL-1 and 1.7032 mg.mL-1 at oviposition.