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树干注射施药是一种高选择性林木果树施药新技术，它不受降雨、干旱等环境条件和树木高度、危害部位等的限制，施药剂量精确、药液利用率高，不污染环境。选用优良的注药机械、恰当的注射药物、正确的注药时机和恰当的注药量，是保证病虫防治或缺素症矫治等达到预期效果的关键。
Trunk injection is a highly selective forest tree fruit application of new technologies, it is not subject to rainfall, drought and other environmental conditions and the height of trees, hazardous sites and other restrictions, the application dose accuracy, liquid chemical utilization rate, does not pollute the environment . Selection of good injection machinery, the appropriate injection of drugs, the right injection timing and the appropriate injection amount is to ensure pest control or lack of correction of key factors to achieve the desired effect of the key.