The use of chemical fertilizers to control crop pests and diseases not only prevents phytotoxicity caused by improper use of pesticides, but also effectively promotes the growth of crops, and is a safe, economic, and effective method. Now introduce several common chemical fertilizer methods.
Ammonium carbonate, commonly known as gas fertilizer, has a strong insecticidal effect. When planting sweet potatoes, potatoes and other crops, the use of 15-25 kg of ammonium bicarbonate per acre in combination with farmyard fertilizers can reduce the damage of earthworms by about 80%. When 25 kg of ammonium per acre is applied to the vegetables, it can greatly reduce the damage of underground pests such as root worms and small tigers.
Ammonia is an alkaline fertilizer that kills insects and sterilizes them. When verticillium wilt and blight occur in cotton, applying 40 kg of ammonia per mu with water can greatly reduce the disease. When cucumber is used as a basal fertilizer, ammonia can control cucumber disease. When the Chinese cabbage is planted with diluted 35 times of ammonia water per acre, it can prevent cabbage virus disease.
Phosphorus fertilizer can kill insects and sterilize. Spraying a cotton plant with a 2% superphosphate calcium leachate can drive out spawning bollworms and kill cotton spider mites, cockroaches and other pests. Spraying tomatoes with a 1% solution of calcium superphosphate also has significant effects in preventing tomato rot.
Ammonium carbonate, commonly known as gas fertilizer, has a strong insecticidal effect. When planting sweet potatoes, potatoes and other crops, the use of 15-25 kg of ammonium bicarbonate per acre in combination with farmyard fertilizers can reduce the damage of earthworms by about 80%. When 25 kg of ammonium per acre is applied to the vegetables, it can greatly reduce the damage of underground pests such as root worms and small tigers.
Ammonia is an alkaline fertilizer that kills insects and sterilizes them. When verticillium wilt and blight occur in cotton, applying 40 kg of ammonia per mu with water can greatly reduce the disease. When cucumber is used as a basal fertilizer, ammonia can control cucumber disease. When the Chinese cabbage is planted with diluted 35 times of ammonia water per acre, it can prevent cabbage virus disease.
Phosphorus fertilizer can kill insects and sterilize. Spraying a cotton plant with a 2% superphosphate calcium leachate can drive out spawning bollworms and kill cotton spider mites, cockroaches and other pests. Spraying tomatoes with a 1% solution of calcium superphosphate also has significant effects in preventing tomato rot.
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