| 摘要 |
A system and method for injecting liquids into trees is provided with an injection device having a liquid container and a removable needle. The system positions the needle into the sapwood of the tree. Liquid is injected into the tree through ejector holes in the needle. The ejector holes may be sized to prevent the liquid from reentering the needle once the ejector holes engage tree material. A check valve may be associated with the needle to substantially prevent the liquid from exiting the tree through the needle. The needle may be permanently left in place or removed after the liquid disburses into the tree.
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