Ingeniously using fertilizers to treat pests means using pesticides to eliminate pests from agricultural crops. This is a new technology for pest control that has been developed in recent years. It saves both pesticides and fertilization. Do not injure natural enemies and reduce environmental pollution. (1) Phosphorus pesticides. With a mass percentage of 2% of the superphosphate leaching solution, the cotton was sprayed on the foliage, and each line of 5 sprays - 6 lines remained without spraying, driving the bollworm to lay eggs spawningly to achieve a better elimination effect. (2) Triazine insecticide. Urea, ammonium bicarbonate, and ammonia water have good volatility, and they stimulate, erode, and fumigate pests, eliminating small pests and weak endurance pests such as spider mites, leafhoppers, and aphids, which are particularly effective. With 2% urea solution plus 1% ammonia bicarbonate solution and 0.5% ammonia water, spray the leaves when pests occur, spray once every 7 days, and even spray 2 times the control effect is good. (3) Silicon calcium insecticide. Practice has proved that the application of 300 kg of silicon calcium and calcium fertilizer per hectare of wheat or rice fields can greatly reduce the damage of armyworm; for every 1 hectare of corn and soybean fields, 500 kg of silicon-calcium fertilizer is applied to avoid the damage of corn borer. (4) Grey liquid insecticide. Use 10 kilograms of grass and water to 50 kilograms (soak for 24 hours) and take the filtrate. It can effectively control locusts on fruit trees, crops and flowers. Potash fertilizer can also enhance the lodging resistance of the crop and enhance the wind resistance of fruit trees and flowers. (5) pesticides kill insects. Mixed application of fertilizers and pesticides will increase the pest control power. For every 1 hectare, 40% of Dimethoate EC 500 grams, urea 1 kg, and 500 kg of water are sprayed at the booting stage of rice to prevent pests in paddy fields and increase rice production. In addition, spraying with 1% urea plus 50% dichlorvos EC or 40% imidophos EC can kill red spiders on cotton and flowers and treat other pests.
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