斜纹夜蛾性诱剂田间诱捕效率的测定及其影响因子分析

采用标记释放回捕法，开展了斜纹夜蛾性诱剂田间诱捕效率的测定及气象因子对诱捕效率影响的研究。结果表明：斜纹夜蛾成虫的标记回捕率在7.46 %～72.46 %之间；性诱剂有效诱捕半径为20～40 m。性诱剂的诱捕效率还受风向、风速、相对湿度等气象因子影响，位于主导风向上风口的诱捕器，其诱捕量最大，夜间相对较大的风速和较低的相对湿度有利于提高斜纹夜蛾诱捕效率。

Determination of Trapping Efficiency of Traps with Sex Pheromone of Prodenia litura and Analysis of Its Affecting Factors

With mark-release-recapture methods, the trapping efficiency of traps with sex pheromone of Prodenia litura and the effect of meteorological factor on trapping efficiency were studied in the field. The results showed that the trapping efficiency was from 7.46 % to 72.46 %. The effective trapping radius of were from 20 m to 40 m. The trapping efficiency to Prodenia litura was determined by meteorological factors: like wind direction，wind speed and the relative humidity. The largest number of Prodenia litura attracted by traps was in the windward of dominant wind direction. Higher speed of wind and lower relative humidity could promote the trapping efficiency at night.