茶树病虫害对茶叶产量和茶叶品质有严重影响，甚至可导致整片茶园的毁灭。尽管当今强调从保护生态环境出发，大力实施病虫害的综合防治，以减少农药使用量，但是，安全、合理、经济、有效地使用农药仍是必不可少的防治手段，也是病虫害综合防治的重要内容。一、茶园用药的难点 Tea tree pests and diseases on the yield of tea and tea quality have a serious impact, and even can lead to the destruction of the entire tea plantation. Although stressing on protecting the ecological environment and vigorously implementing comprehensive prevention and control of pests and diseases in order to reduce the use of pesticides, the safe, rational, economical and effective use of pesticides is still an indispensable means of prevention and control and an important part of integrated pest management . First, the difficulties of tea medicine