吐鲁番葡萄斑叶蝉生活史及发生消长规律研究

目的]探讨葡萄斑叶蝉在吐鲁番的生活史及发生消长规律,为其防治提供科学依据.方法]连续3年对葡萄斑叶蝉种群动态开展定点定时系统监测,每3 d调查1次,分析种群数量、虫态、龄期,确定其年生活史和各代发生期.结果]葡萄斑叶蝉在吐鲁番1年发生4代,以成虫在树缝和墙缝中越冬.4月中旬越冬成虫迁入葡萄园危害,8月为发生盛期,10月初种群密度迅速下降,斑叶蝉进入越冬场所;5月中旬1代若虫孵化,6月中旬2代若虫孵化,7月下旬3代若虫孵化,9月上旬4代若虫孵化.结论]5月中下旬1代若虫发生高峰期为最佳防治时期.

Life History and Occurrence Rule of Grape Leafhopper, Ezythroneura apicahs (NaWa) in Turpan

【Objective】The study was used to discuss the life history and occurrence of grape leafhopper in Turpan and supply the science support for the effective control of this pest.【Method】The population dynamics was investigated at fixed locations for three years,and the number,development stages,period of each stage were recorded every three days to analyze the life history and predict the occurrence time of the pest.【Result】There are four generation of grape leafhopper in Turpan area one year.The adults overwinter by hiding in tree slots or wall slots,and move into grape garden in the middle ten days of April in the next year.The populations reach the peak in August and decreased quickly in October.The nymph of the first generation emerged in the middle ten days of May,and the nymphs of the second,third and fourth generation appears in the middle ten dyas of June,later of July and middle ten days of September,respectively.【Conclusion】The optimum timing for the control of the grape leafhopper is from the middle ten days to the last ten days of May.