What are the specific drugs for underground pests?

What are the specific drugs for underground pests? Please give us an introduction and how to use it. Underground pests generally include root maggots, ground tigers, mole crickets, grubs, golden needles, etc., and the main crops are: peanuts, cotton, soybeans, corn, wheat and vegetables, garlic and fruit trees. The common pesticides to control underground pests in the market are: imidacloprid, methyl isofenphos particles, phoxim particles, phoxim EC, 3911, methamidophos, deltamethrin emulsion, trichlorfon and so on. The following introduces several control methods of underground pests for reference: first, seed dressing with 3911, phoxim, phoxim, etc., the amount of seed dressing is 0.1%-0.3% of the seed weight. The details are as follows: 60% methamidophos, 40% methylisophos, 0.2% maxim, 50% phoxim, 0.1% parathion, 20% methylisophos EC, 0.3%. First dissolve the agent with about 3 kilograms of water, then spray it evenly on the seeds and mix well, dry until semi-dry before sowing. Mix seeds according to 0.01%-0.1% of seed weight. This method can also be used for seed dressing of vegetable crops. Second, poison soil: 40% Lexben is used to control underground pests, 15-20kg is mixed with fine sand every 150ml, and 75% phoxim or 20. 5% phoxim can be used. Pyrethroids and other emulsions were mixed into poisonous soil with the proportion of 1 2000, 20-25kg per mu, scattered near the crops. Third, poison bait: use 90% crystal trichlorfon 30 times liquid, stir-fried corn flour, add green vegetable leaves, sprinkle on the ground around the crops in the evening. Or cut up fresh grass or vegetables, adjust 2-2.5kg with 50% phoxim 100g and water, spray on 1000 kg of grass, put them in small piles in the evening and put them in the field to trap tigers. Each mu is mixed with 1.5-2 kg of fried feed (bean cake, wheat bran, sorghum, corn, etc.), or 50% phoxim, or 40% methyl isophos and 50 grams of water, and sprinkled around the rhizosphere of field crops in the evening, the control effect on ground tiger and mole cricket can reach 80-90%. Fourth, spray prevention and control: use 50% phoxim 800 times liquid, carry on the ground spray along the ridge, use 25% bromothrin 30,40g plus 75kg of water to make routine spraying after sunset, the stems and leaves should be sprayed wet, sprayed 1 times twice, can effectively kill the ground tiger. Fifth, chemical treatment of soil: use 50% phoxim EC 2000g / mu, spray 10 times water on 250kg fine soil to make poisonous soil, apply along ridges, then hoe shallowly. What is a ground tiger? What is a grub? How to control grubs? Click to get more pesticide application techniques