套袋梨黄粉蚜发生为害特点及综合防治技术研究

Study on the Occurrence Character of Bagging Aphanostigna Jacusuiensis and its Integrated Control

对套袋梨黄粉蚜发生为害特点及综合防治技术进行了研究。结果表明：套袋梨园黄粉蚜入袋的始期、盛期、末期分别在5月中旬末下旬初、6月上旬至7月上旬和9月中下旬。与不套袋相比,入袋时间提前27-29 d,虫量增加4.2倍,为害部位和症状发生了变化。提出了农业、物理、化学的综合防治技术,并探明了防治适期。

The damage character and dynamic of Aphanostigna jacusuiensis （kishida） in bagging pear fruit were studied. Results showed that the early, peak and terminal stages of A. jacusuiensis in bagging pear fruit were the end of middle May to the beginning of late May, early June to early July, Middle-late September, respectively. The time of A. jacusuiensis in bagging pear fruit was ahead of 27 to 29 days and the amount of A. jacusuiensis increased 4. 2 times comparing to control. The integrated control methods and optimal control phase were proposed.