The use of chemical fertilizers to control crop pests and diseases can not only prevent the phytotoxicity caused by improper use of pesticides, but also effectively promote the growth of crops. It is a safe, economical and effective method. The insecticidal methods of several commonly used fertilizers are introduced as follows:
1, commonly used nitrogen fertilizer ammonium bicarbonate, commonly known as gas fertilizer, has a strong insecticidal effect. When planting sweet potato, potato and other crops, 15 kg to 25 kg of ammonium bicarbonate per mu is mixed into the soil with farmyard manure, which can reduce the damage of alfalfa by more than 80%. When planting vegetables, 25 kg of ammonium bicarbonate can be used to greatly reduce the harm of underground pests such as root mites and small tigers. The ammonium carbonate is diluted 80-100 times to spray cotton plants, which can kill both mites and leaves. Spraying effect.
2. Ammonia is a chemical alkaline fertilizer that can both kill insects and sterilize. When cotton has yellow-shrinking disease and blight, 40 kg of ammonia water per acre can be used to greatly reduce the disease. When using cucumber as a base fertilizer, it can control cucumber blight. When planting cabbage, 35 kg of ammonia water diluted 50 times per mu can prevent cabbage virus disease. Ammonia can also kill pests such as snails, crickets and rice paddy grasshoppers.
3, phosphate fertilizer can kill insects and sterilization: spray cotton plants with 2% calcium perphosphate leaching solution, can drive away the cotton bollworms that lay eggs, and can kill cotton red spiders, cockroaches and other pests. Spraying tomatoes with 1% calcium perphosphate leaching solution also has a significant effect on preventing umbilical rot.
4, silicon-calcium fertilizer can resist insects: when fertilizing crops, it is applied to silicon-calcium fertilizer. After absorption of crops, silicon will accumulate in the epidermal cells of crops, forming a very hard skin layer, making it difficult for pests to invade and thus enhance The crop's resistance to pests. Practice has proved that: corn, sorghum, soybeans, kidney beans and other acres of silicon and calcium fertilizer 30 kg -40 kg, can avoid the damage of corn borer, bean pod.
5, using grass ash liquid to kill insects: 10 kg of grass ash against water 50 kg, soak for one night, take the filtrate spray, can effectively control aphids on fruit trees, crops and flowers, and can enhance potash fertilizer, enhance crop resistance and flowers and The resistance of young fruit trees to wind.
In addition, tomato plants were sprayed with 500 times potassium dihydrogen phosphate. It can control the mosaic virus of tomatoes. Spraying cucumber with 0.2% boric acid solution can control cucumber downy mildew.
1, commonly used nitrogen fertilizer ammonium bicarbonate, commonly known as gas fertilizer, has a strong insecticidal effect. When planting sweet potato, potato and other crops, 15 kg to 25 kg of ammonium bicarbonate per mu is mixed into the soil with farmyard manure, which can reduce the damage of alfalfa by more than 80%. When planting vegetables, 25 kg of ammonium bicarbonate can be used to greatly reduce the harm of underground pests such as root mites and small tigers. The ammonium carbonate is diluted 80-100 times to spray cotton plants, which can kill both mites and leaves. Spraying effect.
2. Ammonia is a chemical alkaline fertilizer that can both kill insects and sterilize. When cotton has yellow-shrinking disease and blight, 40 kg of ammonia water per acre can be used to greatly reduce the disease. When using cucumber as a base fertilizer, it can control cucumber blight. When planting cabbage, 35 kg of ammonia water diluted 50 times per mu can prevent cabbage virus disease. Ammonia can also kill pests such as snails, crickets and rice paddy grasshoppers.
3, phosphate fertilizer can kill insects and sterilization: spray cotton plants with 2% calcium perphosphate leaching solution, can drive away the cotton bollworms that lay eggs, and can kill cotton red spiders, cockroaches and other pests. Spraying tomatoes with 1% calcium perphosphate leaching solution also has a significant effect on preventing umbilical rot.
4, silicon-calcium fertilizer can resist insects: when fertilizing crops, it is applied to silicon-calcium fertilizer. After absorption of crops, silicon will accumulate in the epidermal cells of crops, forming a very hard skin layer, making it difficult for pests to invade and thus enhance The crop's resistance to pests. Practice has proved that: corn, sorghum, soybeans, kidney beans and other acres of silicon and calcium fertilizer 30 kg -40 kg, can avoid the damage of corn borer, bean pod.
5, using grass ash liquid to kill insects: 10 kg of grass ash against water 50 kg, soak for one night, take the filtrate spray, can effectively control aphids on fruit trees, crops and flowers, and can enhance potash fertilizer, enhance crop resistance and flowers and The resistance of young fruit trees to wind.
In addition, tomato plants were sprayed with 500 times potassium dihydrogen phosphate. It can control the mosaic virus of tomatoes. Spraying cucumber with 0.2% boric acid solution can control cucumber downy mildew.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
After the infection of the new coronavirus, the human nose, throat, hypopharynx, etc. will be "concurrently carried out". By collecting samples such as sputum of the nose, throat, and throat for human virus detection and testing, it can be determined whether the new coronavirus is worn.
self corona test kit,corona kit test,corona self test kit,corona test home kit
Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyuetube.com