不同配方信息素诱芯对二化螟的诱捕效果比较研究

2004年和2005年夏季在江淮稻区二化螟Chilo suppressalis性诱剂诱捕的结果表明：一种新型诱芯（其中顺-11-十六碳烯醛∶顺-9-十六碳烯醛为2∶1）对第1代二化螟的日平均诱捕量相当于二化螟标准诱芯的5倍左右，而在越冬代和第2代成虫发生期则分别相当于后者的1.5839倍和1.7474倍。二化螟诱捕量取决于顺-11-十六碳烯醛和顺-9-十六碳烯醛的比例，而与其各自的剂量或信息素总剂量无明显关系，且它们的最佳配比可能因世代夜间温度的不同而不同，二化螟标准诱芯在第1代诱捕效果下降的原因可能是两种不饱和十六醛比例不适。

Comparative research on trap efficiency of different blends on rice stem borer, Chilo suppressalis (Walker) (Lepidoptera: Pyralidae)

Season-long trapping tests during summers of 2004 and 2005 in the Yangtze-Huaihe rice-growing areas demonstrated that there were noticeable seasonal shifts for trapping Chilo suppressalis males. As for trapping the first generation, a four-component lure (162.3 μg Z-11-hexedecanal, 81.3 μg Z-9-hexedecanal, 56.4 μg hexedecanal, and 30.3μg Z-13-octadecenal) produced approximately 5-fold trap catches as did the standard pheromone lure of C. suppressalis reported. This ratio was significantly different with the ratios of the over-wintered and the second generation ranging from 1.52 to 1.87. Trap catch depended on the ratio of Z11-and Z9-hexedecanal, but did not depend on either component dosage or the total dosage. The optimal ratio of Z11-and Z9-hexedecanal for field trapping might change with different night-temperatures, and the declining of trap catch in the first flights might be due to the inappropriate ratio of Z11-and Z9-hexedecanal contained in the standard pheromone lure of C. suppressalis.