楝科植物叶抽提物对中华稻蝗的活性研究  

THE INSECTICIDAL ACTIVITIES OF EXTRACT FROM MELIACEOUS PLANT LEAVES ON Oxya chinensis

作　　者：李晓东[1] 赵善欢[1] 

机构地区：[1]华南农业大学昆虫毒理研究室

出　　处：《华南农业大学学报》1997年第4期47-51,共5页Journal of South China Agricultural University

摘　　要：用大叶桃花心木等１１种楝科植物叶的甲醇粗提物测试对中华稻蝗若虫的生物活性。结果表明，大叶桃花心木与毛麻楝的拒食率最高，分别为８７．４％与８６．９％。毒杀活性较高的有大叶桃花心木与红果米仔兰，施药后９ｄ，触杀处理死亡率分别为９０％与８３．３％，而胃毒处理的均为９４．４％，并且试虫受处理后，体重增长显著低于对照，生长发育受到严重抑制。he insecticidal activites of 11 species of the methanol extracts from leaves of Meliaceous plants against nymph of Chinese rice grasshopper, Oxya chinensis , were tested. The results showed that the extracts from Chukrasis tabubaris var. velutina, and Swietenia macrophylla possessed 87.4% and 86.9% antifeeding rate respectively, which were higher than those of others. Spraying application and feeding on the contaminated leaf with 10% of extract of S. macrophylla　after treatment in 9 days gave 90% and 944% mortality respectively, and　Aglaia odorata var.  chaudocensis obtained 83. 3% and 94. 4% mortality respectively. The weight gain of the treated insects was lower significantly than that of the control, which demonstrated that the growth was inhibited severely. 

关 键 词：楝科 抽提物 中华稻蝗 杀虫活性 

分 类 号：S482.39[农业科学—农药学] S435.112.4[农业科学—植物保护]