苹果蠹蛾2007年传入甘肃省武威市，发生面积逐年扩大，对武威市梨、苹果生产安全构成严峻威胁，通过调查研究苹果蠹蛾成虫在武威市梨树树体高度的分布特征，以期为河西走廊苹果蠹蛾疫情监测与阻截防控提供科学依据。试验设在甘肃省武威市凉州区梨园，于2023年4 — 9月在梨树树体距离地面高度1.0、1.5、2.0、2.5、3.0 m处悬挂苹果蠹蛾性诱捕器监测成虫，定期目测调查比较苹果蠹蛾成虫诱捕数量差异，并分析虫量分布与树体高度之间的回归关系。结果表明，5月中旬是越冬代苹果蠹蛾成虫发生盛期，苹果蠹蛾成虫分布数量随树体高度增加呈逐渐增加的特征，苹果蠹蛾性诱捕器树体悬挂高度以2.0 m以上为宜。

The Cydia pomonella was introduced to Wuwei in 2007, and its occurrence area expanded year by year, posing a serious threat to the safety of pear and apple production in Wuwei. This study investigated and studied the distribution characteristics of adult C. pomonella at different heights of pear tree canopies in Wuwei, in order to provide scientific basis for its monitoring and control in the Hexi Corridor. The experiment was conducted in a pear orchard in Liangzhou District, Wuwei City, Gansu Province. From April to September 2023, sexual pheromone traps were hung at heights of 1.0, 1.5, 2.0, 2.5, and 3.0 meters above the ground on pear trees to monitor adult insects. Regular visual surveys were conducted to compare the differences in the number of adult moths captured, and the regression relationship between the distribution of insect numbers and tree height was analyzed. Results showed that mid-May was the peak occurrence period for overwintering generation, the number of adults increased with tree height, and trap placement at heights above 2.0 m was optimal.

S436.612

武威市自然科学基金(WW23A03RPZ006)。