1. The trunk coating method controls and controls pests such as aphids, golden flower bugs, red spiders and pine-like scale insects on willows, hedgehogs, hawthorn, cherries and other trees. Dimethoate pesticides can be applied on the tree trunk 2 meters above the ground. After being absorbed by the trees, the liquid can be transported to all parts of the tree. Once the pests eat, they will die of poisoning, and the control effect can reach more than 85%. If the green or blue plastic film is wrapped around the applicator, the effect is better.
2. Injecting pesticides Some borer pests, such as longhorned beetles, puffer beetles, pine shoots, bamboo weevil, etc., damage the trunk, branches, and tree skin. For borer pests, treat them differently. If there are wormholes on the surface of the tree, syringes can be used to inject the drug into the wormholes. For example, when fresh swarf is found outside the wormhole, it indicates that there are larvae such as longhorned larvae in the wormhole. At this time, 4ml dimethoate 5x (1 part of the solution vs. 5 parts of water) can be injected into the wormhole by 1.2ml or Each well was injected with 5 ml of 2% to 3 times of 5ml of methamidophos EC and then sealed with sludge to prevent the liquid from escaping. This method can control more than 95% of aphids in wormholes. Wormholes are not visible on the surface of trees, and gnat-mosquitoes will harm the willows. They can only see the large "tumors" that appear on the trunks and branches (this is called "tumor tumors" in forestry). At this time, they can be first used on tumors. Drill 2 to 3 wells, then inject 1 ml into each well with omethoate solution. This method has a 100% control effect against Salicornia gossypii.
3. There are two methods for burying medicines in the roots buried in the roots: one is to directly bury the medicines. Open the ring groove 0.5 to 1.5 meters away from the tree, then bury 3% carbofuran in the groove, bury 100 to 150 grams for 1 year to 3 year old trees, and bury 250 grams for 4 to 6 year old trees. ~300 g; trees buried more than 7 years old can administer about 500 g of the tree to control the leaf pests of the trees, especially for the control of aphid pests, and its efficacy period lasts for one and a half months to two 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 (such as a 0.5 kilogram empty wine bottle or canned bottle), then dig soil around the root of the trunk to expose the root of the tree. Roots of the tree, cut off the root tip, insert the original root into the medicine bottle, insert the root end into the bottom of the bottle, and finally tie the bottle mouth with plastic film and bury the soil. Through the tree roots, the liquid medicine will soon be transported along with the catheter to the trunk, branches, leaves and other parts of the tree, so as to achieve the purpose of pest control.
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