Researches And Application On Green Control Technique System Of Primary Pests In Xihulongjing Tea Region In Zhejiang Province

West Lake region of Hangzhou City is the original production place of the famous Xihulongjing tea, where the pests frequently occur and badly damage the tea plants. During the past fews of years, tea green leafhopper Empoasca vitis G-the, tea geometrid Ectropis oblique Prout, mite Acaphylla theae Watt and other pests continuously had broken out, which have resulted in the reduction of tea yield, the deterioration of quality and the loss of tea production value. In order to restrain the loss, the green control technique system on the primary pests have been investigated and extended.The main contents include:(1) make a study of the green control techniques system on tea green leafhopper, and integrate natural pyrethrins, GE organic silicone, pheromones colour plates, plucking, pruning and other agricultural measures so as to restrict tea green leafhopper. The green control technique system has been demonstrated and extended in the tea region, which control effectively the leafhopper;(2) during the emergencing peak stage of the overwintering generation of citrus spiny whitefly, i. e. from the end in March to the beginning of April, the coloured plates with infochemicals have been used to lure their adults, which can make its population density to keep at the low level during the whole year; (3) aiming at other important pests, i.e. tea geometrid, tea weevil, tea pink rust mite, the green control techniques are studied and applied, and its control effect is pretty; (4) construct the green control technique system on the pests in Xihulongjing tea region, build up the model base to extend the technique system:①ameliorate the tea garden environment, and exert the potential for the natural regulation of the tea garden community to suppress the pests;②persist in the idea that the agricultural control is the basal measures;③vigorously develop the biological control, and protect and utilize the resourses of the natural enemies;④carry on the physical control;⑤rationally execute the chemical control, actually carry out the green control;⑥seriously extend the green control technique, ensure the construction of the model of the green control, and resort the demonstration effect of the model to acquire the fine persisting control. The green control technique system has been extended in the Xihulongjing tea region, and the results are very well.