茶园夏剪对茶小绿叶蝉消长的影响

Effect of Summer Pruning in Tea Garden on the Growth and Decline of Empoasca Pirisuga Matumura

茶小绿叶蝉具有发生早、繁殖快、发生面积大、虫口密度大、为害损失严重的特点,是我国南方茶区第一大害虫。随着茶园面积的扩大和施肥水平的提高,茶园病虫害也呈现逐年加重发生的趋势,近年来茶小绿叶蝉的发生日趋严重,制约了茶叶产量和品质的提高,影响茶农的增产增收。应用茶园夏剪技术,在春末夏初茶小绿叶蝉第一个高峰出现前统一进行一次重修剪,剪除茶园顶篷叶片层,可以有效破坏和阻断害虫食物链,造成茶小绿叶蝉大量死亡,田间虫源基数骤然下降,能有效控制全年茶小绿叶蝉的发生。试验证明,茶园夏剪对茶小绿叶蝉的控害效果显著、茶小绿叶蝉虫口密度增长缓慢、控害时间长、符合绿色和有机生产要求,在实际生产中有很好的推广应用价值。

The Empoasca pirisuga Matumuratea(aka small green leafhopper) has the characteristics of early occurrence,rapid reproduction, large occurrence area, large population density and serious damage, so it is the largest pest in the tea area of southern China. With the expansion of tea garden area and the improvement of fertilization level, tea garden diseases and insect pests also show a trend of increasing year by year. In recent years, the occurrence of the Empoasca pirisuga is becoming more and more serious, which restricts the improvement of tea yield and quality, and affects the yield and income of tea farmers. Using the summer pruning technique of tea garden, a unified re-pruning was carried out before the first peak of the Empoasca pirisuga appeared in late spring and early summer, and the canopy leaf layer of tea garden was cut off,which can effectively destroy and block the food chain of insect pests and cause a large number of death of the Empoasca pirisuga. The number of insect sources in the field decreased suddenly, which can effectively control the occurrence of the Empoasca pirisuga in the whole year. The experiment shows that the control effect of summer shears in tea garden on the Empoasca pirisuga is remarkable, the population density of the Empoasca pirisuga increases slowly, the pest control time is long, and meets the requirements of green and organic production, which has a good value of popularization and application in practical production.