雅安茶区四种主要茶树害虫数量变动观察

Observation of Quantity Alteration of Four Major Pests of Tea Tree In Yaan

采用定点取样及黄板诱捕法系统观察了雅安茶区4种主要害虫的年数量变动情况,调查结果表明:黑刺粉虱防治上应把握4月下旬、5月下旬、6月中旬等几个主要为害时期;小绿叶蝉防治应及时控制5月初、6月中旬、7月中旬及8月上旬的虫口密度,并以若虫期施药为佳;4月中旬、5月上旬、9月上旬至10月上旬主要为有翅成蚜高发期,供试黄板对茶蚜有很好的诱捕作用。茶跗线螨防治上需把握5月底螨量上升期进行虫口调查,根据防治指标及时防治。

By taking the method of stationary sampling and yellow plate trap, we have observed systematically the yearly population alteration of four major pests of tea tree in Yaan area. The result shows that the best time for controlling Aleurocanthus spiniferus Quaintance are the main harming periods as following： the last third of the April and May, the middle third of the June etc. , also for the Empoasca flasvescens Fab, the pest＇s population must be controlled immediately during the time of the beginning of the May, the middle third of the June, July and August, and the best time for applying pesticide is nymph; the periods of the middle third of the April, the first third of the May, and the first third of the September to the first third of the October all are of the great amount of Toxoptera aurantii Boyer with wings, the yellow plate is effective for trapping them, then in the controlling of Polyphagotarsonemus latus （Banks）, it＇s better to investigate the pest＇s population when rising up in the last third of the May, and manage in time according to the target of the controlling.