棉铃虫性外激素成分的化学分析和田间试验

利用毛细柱的气相色谱和质谱对棉铃虫（鳞翅目：夜蛾科）雌蛾腺体提取物的分析，鉴定出了他和十六碳醛、顺－9－十六碳烯醛、顺－11－十六碳烯醛、饱和十六碳醇和顺－11－十六碳烯醇，其相对比例为6．1：4．5：100：3．5：8．8。在山东、山西省的田间试验中，2mg的顺－11－十六碳烯醛和顺－9－十六碳烯醛（97：3）置橡胶塞上能有效地引诱棉铃虫雄蛾。增加4％－7％他和十六碳醛到二元混合物中诱蛾量超过二元混合物。增加1％顺－11－十六碳烯醇到二元或三元混合物中减少诱蛾量，当增加5％顺－11－十六碳醇时诱蛾量大量减少。

SEX PHEROMONE COMPONENTS OF HELICOVERPA ARMIGERA:CHEMICAL ANALYSIS AND FIELD TESTS

Gas chromatographic and mass spectral analyses were conducted on the pheromone glandextracts of female moth of Helicoverpa armigera (Lepidoptera: Noctuidae). Saturated aldehyde (16:Ald), (Z) - 9-hexadecenal (Z- 9- 16: Ald), (Z) - 11 -hexadecenal (Z- 11 - 16: Ald), hexade-canol (16: OH) and (Z) - 11 -hexadecenol (Z- 11 - 16: OH) were found from gland extracts in theratio of 6. 1: 4. 5: 100: 3. 5: 8. 8. In field tests of Shandong and Shanxi Provinces, 2 mg blends of Z- 11 - 16: Ald and Z- 9- 16 : Ald (97: 3) applied on a rubber dispenser effectively attracted H.armigera males. The addition of 4%-7 % 16: Ald to the binary mixture caused increase over that of thebinary mixture. The addition of 1 % Z- 11 - 16: OH to binary or trinary mixture may reduce catches,while addition of 5 % Z- 11 - 16: OH reduced catches singnificantly.