为筛选安全、高效的植物源储粮害虫杀虫剂，研究了4种植物不同部位的3种溶剂提取物对玉米象(Stophilus zeamais Motschulsky)成虫的触杀活性。结果表明，绣球小冠花(Coronilla varia)茎叶部位的石油醚、乙酸乙酯、乙醇提取物和千层塔(Lycopodium serratum)全草的石油醚提取物以及马铃薯(Solunum tubersum)花的乙酸乙酯提取物对玉米象成虫的触杀校正死亡率均为100%。其中，在0.2 mg/cm2浓度下，绣球小冠花(Coronilla varia)茎叶乙酸乙酯提取物活性最为突出，4 d后对玉米象成虫的触杀校正死亡率为100%。

The contact activities of extract from 4 species plants of different parts against adult maize weecil， Sitophilus zeamais are studied. The result shows that the petroleum ether and ethyl acetate and ethanol extract from stems and leaves of Coronilla varia as well as petroleum ether extract from whole plant of Lycopodium serratum as well as ethyl acetate extract from flower of Solunum tubersum againt adult S. zeamais， the corrected mortalities are all 100%. Especially， the petroleum ether extract from stems and leaves of Coronilla varia showed remarkable contact activity against adult S. zeamais the corrected mortality is 100% four days after treatment in the concentration of 0.2 mg/cm2 .

Q965

国家粮食局公益性行业科研专项(201313002-3-5)