崂山茶区茶园小绿叶蝉田间发生规律研究

采用田间系统调查和辅助调查方法,研究了崂山茶区茶园小绿叶蝉的田间发生规律。结果表明,茶园小绿叶蝉在崂山茶区1年发生9代,从4月中旬开始出现越冬代成虫,5月中旬出现第1代若虫。进入7月份,种群数量增加很快,到8月下旬至9月下旬达到全年虫口数量的最高峰,从10月上旬开始,田间种群数量逐渐下降,到11月份,成虫全部进入越冬状态。从全年种群消长规律来看,小绿叶蝉在该茶区1年出现1个危害高峰,即为单峰型。

Occurrence Rule of Empoasca flavescens in Tea Garden of Laoshan Tea Area

The occurrence rule of Empoasca flavescens were investigated in the tea garden of Laoshan tea area by the field system investigation and supplementary survey.The results indicated that there were 9 generations of Empoasca flavescens in the tea garden of Laoshan tea area during one year.The overwintering generation adults occurred from mid-April.The first generation nymphs emerged in mid-May.The population quantity increased rapidly in July.The number of annual insect population reached the peak from the end...