茶树病虫害的防治是保证茶叶正常生产的一个重要环节。合理使用化学农药才能达到既经济有效又不污染环境。一、条国使用化学农药的特点1．茶树是全年进行多次分批采摘鲜叶，采摘间隔期短，一般春茶3～5天，夏秋茶10天左右来摘一次。所以，要求所使用的化学农药残留期要短，一般 Tea tree pest control is to ensure the normal production of tea is an important part. Rational use of chemical pesticides to achieve both economical and effective and do not pollute the environment. First, the characteristics of the use of chemical pesticides 1. Tea is the year many batches of picking fresh leaves, picking interval is short, usually 3 to 5 days of spring tea, summer tea picking about 10 days. Therefore, the requirements of chemical pesticide residues to be short, in general