余庆县茶树黑剌粉虱发生规律初探

Preliminary Study on the Occurrence Regularity of Aleurocanthus Spiniferus in Tea Fielde in Yuqing County

通过2017~2018年对贵州省余庆县茶树黑刺粉虱发生情况调查结果表明:余庆县茶园黑刺粉虱1年发生3代,以若虫越冬;越冬代成虫始见期4月上旬、发生期4月上旬~5月上旬;第1代发生期在4月上旬~7月上旬,卵孵化高峰期5月上旬~中旬,成虫羽化高峰期在6月下旬~7月上旬;第2代发生期在6月中旬~10月上旬,卵孵化高峰期7月上旬末~中旬,成虫羽化高峰期在9月上旬;第3代发生期8月下旬~翌年5月上旬。4~9月温度影响第1代、第2代的生长发育,导致成虫羽化高峰期年度间存在差异。其防治策略为:以冬季清园和黄板诱杀成虫为基础,抓住成虫羽化高峰期和卵孵化高峰期及时施药防治。

Investigation on occurrence of Aleurocanthus spiniferus in tea fields in Yuqing County of Guizhou Province from 2017 to 2018 showed that there were three generations of Aleurocanthus spiniferus occurred in Yuqing County and overwintered as nymphs;the adults emerged in early April and occurred from early April to early May;the first generation occurred from early April to early July;the peak of egg hatching occurred from early May to mid-June;and the peak of adult emergence was in mid-June to mid-Jully.The second generation occurred from mid-June to early October,the peak of egg hatching is from late July to mid-October,the peak of adult emergence is from early September,and the third generation occurs from late August to early May of next year.From April to September,the temperature affected the growth and development of the first and second generations,resulting in annual difference of the peak emergence period of adults.Our control strategies are:on the bases of killing adults in winter by artificial catching and yellow plate traps,timely application of pesticides is needed during the peak period of adult emergence and egg hatching.