应用性信息素诱杀水稻二化螟效果的初步研究

1997-1999年在吉林市7个地点进行了性信息素诱杀水稻二化螟的试验。结果表明；性诱芯田间有效期长达42d，水盆诱捕器每盆每晚最大诱蛾量达481头，每盆每日最大诱蛾量Y与每盆每日平均诱蛾量X之间的关系是：随着X的增大，Y对X的倍数逐渐下降，在平均诱蛾量较低时，雄蛾对诱捕器有一定的选择性，但当虫口密度大时，雄蛾对诱捕器的选择性下降，结果使不同诱盆的诱蛾量接近均等。初步结果表明；性诱杀效果较好，与化学农药防治效果相当。

A Preliminary Study on Effect of Applying Sex Pheromone into Mass Trapping of Rice Stem Borer, Chilo suppressalis

Experiment on mass trapping of rice stem borer, Chilo suppressalis (Walker) with sex phero-mone was conducted at 7 locations in Jilin province of northeast China in 1997-1999. The results showed that the longevity of the rubber septa was as long as 42 days and the maximum catches at one water tray in a single night was 481. It was found that there was a relationship between the maximum catches, Y and mean catches per trap per night, X, and Y/X decreased with increase in X. Male moths selected the traps to some extent, but the selection was reduced when male population density was high resulting in an even catches at different traps. The percent of damaged rice plants in the mass trapping area was a little lower than that in the chemical control area, indicating close efficiencies of these two mea-sures.