1. Pepper solution Take 50 grams of hot pepper, add 30-35 times of water, heat and cook for half an hour, then take the filtrate to spray, which can effectively control locusts, silkworm and red spider and other pests. 2. Extract the bitter gourd leaf solution with fresh bitter gourd leaves, add a small amount of fresh water to smash the original liquid, and then add 1 kg of lime water per kilogram of the original solution. After homogenizing, use it for watering the roots to prevent the ground tiger from having special effects. 3. Welsh onion solution Weigh 1 kg of water and 0.4 kg of scallion, and smash the liquid. Add 6 kg of water per kilogram of liquid. Stir the mixture and spray it. It has good control effects against many insect pests such as aphids, cabbage caterpillars, and roundworms. 4. leek solution to take fresh kimchi 1 kg, smashed after adding 400-500 grams of water soaked, squeezed juice, and then 8 kilograms per kilogram of the original liquid spray, can prevent red spider, roundworm, cotton bollworm and so on. 5. Tomato juice solution into tomato pulp, add water 2-3 times, and soak for 5-6 hours, take the supernatant spray, you can control red spider and other pests. 6. Garlic solution The garlic cloves of 20-30 grams of garlic are pulverized and then stirred with 10 kilograms of water. The filtrate is used to control locusts, red spiders and beetles. 7. The nettle leaf solution will pluck sap from the leaves of ramie leaves, add water 3-5 times, and soak for 12 hours. Spraying can effectively prevent and cure various pests such as vegetable aphids, cabbage worms, ground tigers, beetles and diamondback moth. 8. Cow urine with fresh cow urine 1 kg plus 50 kg of water spray, can effectively control red and yellow spiders. 9. Lime aqueous solution soaked in 1% lime water can prevent rice blast, etc., and use 2% lime water to soak the grain for 2 hours to prevent the incidence of millet white. 10. Tobacco, lime aqueous solution 0.5 kg of tobacco (or 1 kg of tobacco stems), 0.5 kg of quicklime, a little soap, add 30 kg of water, soaked for 1 day to juice and spray, can control aphids, red spider, cabbage caterpillar and so on.