There are two ways to bury the roots: one is to bury the drug directly. Open the ring groove 0.5 to 1.5 meters away from the tree first, then bury 3% carbofuran in the furrow, bury 100 to 150 grams for 1 to 3 year old trees, and bury 250 to 300 grams for 4 to 6 years old trees; 7 years old About 500 grams of wood is buried in the above trees, which can control the leaf pests of trees, especially for control of aphids. The efficacy period can last for about one and a half months. According to the investigation after buried medicine, the effect of controlling pine borer can reach 95% and the control of aphids can reach 100%. The second is buried bottle. Put 40% omethoate 5 times into the bottle first, then dig soil around the root of the trunk to expose the roots, select no more than the thick root of the cigarette, cut the tip, and insert the original root The vial, insert the root end into the bottom of the bottle, and finally tie the bottle with plastic film and bury the soil. After the tree root sucks medicine, the liquid medicine is transported to the trunk, branches, leaves and other parts of the tree with the catheter to achieve the purpose of pest control.
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