滇南茶园小绿叶蝉类群数量的大周期变动

Long-term changes of lesser green leafhopper in tea garden of southern Yunnan

为探索和掌握茶园小绿叶蝉大发生的规律和更好地进行综合防治, 1988 -2003年先后在滇南西双版纳大渡岗茶厂和思茅新星茶厂选定固定观测区,进行定点、定人、定时及统一方法的系统监测。对思茅新星茶厂观测区连续 13年 (1991-2003年)的系统观测数据进行综合分析,其地区性大周期变动呈现出明显的“U型变动”。1991 -2001年两虫口高峰间虫口量变动时间为 10-11年,此变动规律的出现,为茶园小绿叶蝉大发生的预测预报和防治提供了重要依据。

In order to find out the outbreak rule of lesser green leafhopper, we investigated long-term changes of its population in tea garden of southern Yunnan. The result showed that the population peek interval was 10-11 years, which looked like letter U in the shape. The revelation of lesser green leafhopper’s population dynamics helps to its forecast and control.