防治果树病虫害常用树冠喷药法,由于树冠高大,枝叶浓密,不仅作业困难,而且难以喷匀喷透,防治效果往往不够理想。采用树干包扎农药法,药液可渗透到木质部导管内,并扩散到蒸腾液流中均匀地输送到树冠枝叶上,这样可以防治树干和枝叶上的病虫害,与喷药相比具有省工、省药、污染少、效率高的优点。 Prevention and control of fruit trees Pests and diseases commonly used crown spray method, the crown tall, thick foliage, not only difficult to work, but also difficult to spray evenly spray, the control effect is often not ideal. The use of the trunk bandage pesticide law, the liquid can penetrate into the xylem catheter, and spread to the transpiration flow evenly delivered to the canopy branches and leaves, so you can control the trunk and foliage pests and diseases, compared with spraying a provincial workers, provincial Medicine, less pollution, high efficiency advantages.