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Prevention and control of forest pests using spray method, although this method has a certain control effect, but a large number of liquid dispersion in the air pollution of the environment, easily lead to human and animal poisoning, and to the poplar through the wing moth, Sang Longhorn, anoplophos antenna, Mongolia Insect pests such as cockroaches and moths are generally difficult to spray and must be applied in a special way. Several control methods for the above diseases are introduced here: Trunk application methods to control locusts and gold on willows, hedgehogs, hawthorn, cherries, etc. Insect pests, such as scale insects, spider mites, and pine trees, can be used to apply systemic pesticides such as omethoate, etc., to the trunk at a height of 2 meters above the ground. The control effect can reach 95% or more. This method is simple and easy, if you wrap green or blue plastic paper in the applicator, the effect is better. The plastic sheet is released after 5 to 6 days of drug efficacy to prevent rot in the dressing. The poison insertion method inserts the poisonous toxin that was produced in advance into the insect tract, and the medicine reacts with the moisture in the sap and the insect feces to generate a chemical reaction to form a highly toxic gas, so that the insect poisoning in the trunk is poisoned. Zinc phosphide 11%, gum arabic 58%, water 31%, the first water and glue into a beaker, heated to 80 °C, until the peptizate after adding zinc phosphide, mix well before use, when used Use bamboo sticks 7 to 10 centimeters long and 0.1 to 0.2 centimeters in diameter to poke medicine. First test the direction, depth, and size of the borehole with the unmedicated end. Insert one end of the medicine into the borehole, 4 to 6 centimeters deep. , One per hole. After inserting the poisonous sign, it is sealed with yellow mud to prevent air leakage, and the control effect of poisoning and killing of borers is over 90%. Tree trunk injection method Tianniu, Liu Huai mosquitoes, pine shoots, bamboo weevil and other pests damage forest trunks, branches, tree skin. The use of injection injection method has a significant effect. Iron drills can be used to drill 3 to 5 holes below the surface of the trunk 20 cm below the ground (the number of holes to be drilled depends on the size of the tree), with a hole diameter of about 0.5 to 0.8 cm and a depth of 3 to 5 cm in the xylem. After the injection hole is opened, systemic pesticides such as omethoate, dimehypo, methamidophos, etc. are injected into the injection hole slowly with a veterinary syringe. The amount of injection depends on the size of the tree. Generally, the height of the tree is 2.5 meters, the diameter of the tree is about 2 meters, 1.5 to 2 milliliters of the original drug is injected per plant, and 1 to 1.5 milliliters of each plant is injected. Adult trees can Appropriately increase the injection volume, 2 to 4 ml per plant, insects can kill a large number of drugs within one week after injection. Hanging hanging bottles to trees Hanging hanging bottles refers to hanging medicine bottles filled with liquid medicines on the trunks, and using cotton cords and cotton cores to transport the liquid medicines in the bottles to the branches and leaves through the trunks in the trunk to achieve the purpose of prevention and control. This method is suitable for the prevention and control of various aphids, red spiders, scale insects, longhorn beetles, and other sucking suckers, and stem pests. The method of hanging bottles is to select a tree trunk and drill a small hole with a wooden drill. The hole is upward and forms an angle of 45 degrees with the tree trunk. The hole is deep to the pith and the bottle nailed with liquid medicine is hung on the trunk above the hole. Cotton rope straightened. For the different pests, the use of systemic pesticides with higher control efficacy can be selected from the beginning of sap flow to winter tree dormancy, but the best results are from April to September. The first method of embedding in the root is to directly bury the medicine. With 3% carbofuran pesticides, open the ring groove in the periphery 0.5 to 1.5 meters away from the tree, or excavate 2 to 3 points, buried 1 to 3 years old trees about 150 grams, 4 to 6 years old trees buried 250 drugs Around grams, about 500 grams of medicine buried in trees for more than 7 years old, can significantly control forest pests, and the efficacy can last for about 2 months. Especially for aphid pest control effect is very good, the effect of controlling pine shoots up to 95%. The second is the root buried bottle. Fill 40% omethoate 5 times into the bottle, excavate the ground to expose the roots, select the root thickness of the cigarette, cut the root tip, insert the root into the bottle, and pay attention to the root end. To the bottom of the bottle, and then use plastic paper to tie the bottle into the soil, and absorb the drug directly through the root. The liquid can be quickly transported to the tree with the catheter to effectively control the pest.