前 言 茶叶是农业组成的一部分。农业上,为了防治病虫害,确保农业丰收,大量使用化学农药的结果,不仅污染了环境,同时也成为今天茶叶残留农药的严重问题。 自古以来,人类就用除虫菊、尼古丁等天然产物来防治农业病虫害。第二次世界大战前,还广泛使用波尔多液、石灰硫磺合剂等无机农药。第二次世界大战后,由于生产有机氯 Foreword Tea is part of agriculture. In agriculture, in order to prevent pests and diseases and ensure the harvest of agriculture, the result of extensive use of chemical pesticides not only pollutes the environment, but also becomes a serious problem of pesticide residues on tea leaves. Since ancient times, humans use natural products such as pyrethrum and nicotine to control agricultural pests and diseases. Before the Second World War, but also widely used Bordeaux mixture, lime sulfur mixture and other inorganic pesticides. After the Second World War, due to the production of organic chlorine