茶树害虫防治的新途径--化学生态防治

本文介绍了应用化学生态学原理进行茶树害虫防治的目前进展和发展前景。重点介绍了应用昆虫性信息素和茶树挥发性互利素在害虫防治中的应用。在昆虫性信息素的应用上，主要利用人工模拟的雌性害虫的性信息素来引诱同种害虫的雄性害虫以达到预测和迷向防治的目的。在茶树挥发性互利素的应用上，当害虫危害茶树后，害虫的口腔分泌物中的酶类会由叶片的伤口进入茶树组织内而使茶树体内代谢途径发生变化，形成新的挥发性化合物。这种新的挥发性化合物对这些害虫的天敌有很强的引诱作用，而对害虫却没有或只有很弱的引诱活性，通过这类化合物可以使天敌很容易找到它扑食或寄生的害虫的位置，为天敌寻觅到害虫提供了线索，同时为被害的茶树提供了保护．应用化学生态学进行害虫的防治尽管还没有在生产上达到应用的程度，但前景辉煌。

A new way in the control of tea pests

The application of insect Sexual pheromone and the synomone emitted by the tea plants in the Pest control was introduced. In the application of insect sexual pheromone, the main technique is to attract the male pest of same species by using the artificially simulated sexual pheromone of the female tea pest, so to attain the purpose of forecasting and the disturbing control of tea pests. In the application of synomone liberated from tea plant,when the tea Pest damaged tea plant, the enzymes in the oral secretions of tea pest penetrated into the damaged parts of tea leaves and induced the changes in the metabolism of tea plant, thus forming the new volatile compounds. These new volatiles showed no attractiveness or weak attractive activity to tea pest, however, they showed a strong attractiveness to the natural enemies of tea pest, thus helping the natural enemies to find the sites of tea pest located according to the cues provided by these volatiles. Although the application of chemical ecology in the control of tea pests was not attained to the level of productive application, however, it showed a qlorious prospects in the future.