镇巴县地处陕西的南部边陲,是陕西的南大门。国道西万线贯穿全境。是云南、贵州、四川三省进入我省的重要门户。特殊的地理位置和山区复杂的生态环境,给多种病虫草的发生蔓延创造了有利条件。近年来,随着市场经济的迅速发展,植物及植物产品的调运日益频繁,周边地区发生的?.. Zhenba County is located in the southern border of Shaanxi, Shaanxi’s southern gate. State Road West million throughout the whole line. Yunnan, Guizhou, Sichuan provinces into the province an important gateway. The special geographical location and the complicated ecological environment in mountainous area have created favorable conditions for the occurrence and spread of many diseases and insect pests. In recent years, with the rapid development of the market economy, the dispatching of plants and plant products has become more frequent and the occurrence in the surrounding areas has become more frequent.