在兰州桃园投放梨小食心虫迷向素，观察其对梨小食心虫的控制效果。结果表明，桃园连续应用梨小食心虫迷向素的第3年，诱集到的梨小食心虫成虫数量比第1次应用当年减少16倍以上，比应用前1 a减少了25倍以上；梨小食心虫折梢率比应用第2年降低7.7%以上，平均蛀果率降低5%，应用效果良好。

In order to observe the control effect of Grapholitha molesta，pheromone of Grapholitha molesta put in peach orchard in Lanzhou. The result shows that the third years of continuous application of Grapholitha molesta Pheromone in peach orchard， the number of attracting Grapholitha molesta adults reduced 16 times more than first applications， reduced 25 times more than the application of the year before. The top-breaking rate of Grapholitha molesta is 7.7% lower than second years， the average fruit decay rate decreased is 5% and the application effect is good.

S436.612.2

国家现代农业产业技术体系建设专项(CARS-31-Z-15)、农业部园艺作物生物学与种质创制学科群西北果树科学观测实验站部分内容。