在离地15～20厘米处的树干两侧,用开皮器打两个洞,深至形成层,每一个洞附近挂一容量约60毫升的玻璃瓶,瓶内装所用药液,如40％杀虫双400倍液、80％甲基托布津800倍液等。然后将灯芯一端放在瓶内药液中,另一端插入树干洞口内,用树皮盖住洞口,再用塑料薄膜全部包扎起来。药液通过灯芯输送到洞内,让树体慢慢吸收。此法既可防 On both sides of the tree trunk 15-20 cm from the ground, use a peeler to drill two holes deep into the formation layer, hang a glass bottle with a capacity of about 60 ml near each hole and fill the used liquid in the bottle, for example 40% Insecticidal double 400 times, 80% thiophanate-methyl 800 times and so on. Then wick one end of the solution in the bottle, the other end into the trunk hole, cover the hole with a bark, and then all the plastic wrap all up. The solution is delivered to the hole through the wick, allowing the tree to slowly absorb. This method can prevent