摘要
为了筛选出新型植物源杀虫活性物质,本试验以棉铃虫为试虫,对6种中草药干粉进行了杀虫活性测定。结果表明:6种中草药干粉对棉铃虫均表现出一定的生长发育抑制作用,其中以麻黄的影响最为显著。第5天对试虫的体重抑制率达到最大值,为90.3%;对成虫的繁殖能力亦有一定的影响,与对照相比,产卵历期缩减了3.7d,平均产卵量减少623粒。用麻黄干粉处理饲料进行饲喂(第5天不换饲料),试虫在幼虫期全部死亡。在麻黄的不同提取物中,乙醇粗提物对棉铃虫的生长发育影响最为显著,第5天对棉铃虫幼虫的体重抑制率高达82.2%,但不同浓度乙醇提取物间没有显著差异。
In order to screen an environment friendly and highly effective insecticide,the insecticidal activities of plants were detected in this paper.Growth and developmental effects of the powder of six plants on the larvae of Helicoverpa armigera were tested by diet-incorporated method.The results showed that the powders of the six plants had effect on the larvae of H.armigera,and Herba ephedrae showed the best effect,whose growth inhibitory rate reached 90.3 % at the 5th day after treatment.Compared to the control it had much effect in the fertility of adult： the egg laying period was 3.7 days shorter and the number of eggs-laid was reduced by 623.The H.armigera all died in the larval stage if the treatment diet of H.ephedrae powders did not renew with the normal diet at the 5th day.In the extracts of H.ephedrae by 7 different solvents,the ethanol extract had highly inhibition of growth on the H.armigera and the inhibitory rate of weight was 82.2%,but no significant difference between the different concentrations of ethanol was observed.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2012年第6期75-80,共6页
Journal of Hebei Agricultural University
基金
河北省自然科学基金资助项目(C2006000486)
河北省强势特色学科资助
关键词
麻黄
棉铃虫
生物活性
生长发育抑制作用
Herba ephedrae
Helicoverpa armigera
bioactivities
growth inhibition activity
