摘要
为了探讨瑞香狼毒(Stellera chamaejasme)在植物源农药方面的应用,研究采用2.50 kg的瑞香狼毒根粉,95%乙醇总提取液浓缩至500 mL,定为原液,按不同浓度稀释后,室内叶碟法杀灭菜粉蝶(Pieris rapae)4龄菜青虫试验结果显示:浓度为160 mol/L时,4龄幼虫表现为高度的拒食现象.浓度为80 mol/L和40mol/L,杀虫效果相似.72 h时,浓度为80 mol/L时最高杀虫效果达到85.36%,而浓度为2.5 mol/L时杀虫效果不高,仅为27.09%.3个处理时间下,LC50分别为39.36 mol/L、17.02 mol/L和8.81 mol/L.因此瑞香狼毒在植物源农药利用方面具有较好的应用前景.
The applications of Stellera chamaejasme in botanical pesticide are studied in this paper, which is concentrated 2.50 kg root powder and 95% ethanol mixture to 500 ml as the crude solution, dilutes to different concentrations and adopted the disc - leaf - method to kill the 4th larva of Pieris rapae. The results show that a high antifeedant effect when the concentration is 160 mol/L. The effects of concentration 80 mol/L and d0 mol/L are similar. The highest insecticidal effect is 85.36% when the concentration is 80 mol/L at 72 h, but only 27.09% when the concentration is 2.5 mol/L. Under the 3 processing time, LC50 （Lethal Concentration 50 ） are 39. 36 tool/L, 17. 02 mol/L and 8. 81 mol/L. Therefore, Stellera chamaejasme in the use of botanical pesticide has good prospects.
出处
《哈尔滨师范大学自然科学学报》
CAS
2011年第1期84-86,共3页
Natural Science Journal of Harbin Normal University
关键词
瑞香狼毒
粗提取
菜青虫
杀虫
SteUera chamaejasme
Crude extraction
Larvae of Pieris rapae
Insecticide
