Foliar fertilizer can timely supplement the demand for fertilizer in different growth stages of vegetables, and it can only be just right according to the correct selection of the harvested objects.
1, melons and fruits. Including a variety of melons, tomatoes, eggplant, peppers, beans and so on. Nitrogen, phosphorus, potassium mixed fertilizer or multi-component compound fertilizer, such as potassium dihydrogen phosphate (0.3~0.5%) and diammonium phosphate (2%), should be used.
2, roots and stems. Such as green onions, garlic, onions, radishes, etc., should be based on phosphorus, potassium fertilizer, can be sprayed with 0.3% potassium dihydrogen phosphate and 0.2% diammonium phosphate.
3, leafy vegetables. Such as cabbage, cabbage, spinach, celery, leeks and so on. Foliar fertilizer is mainly composed of urea (2%) and sulfuric acid hinge (1%). Foliar spray application, generally 5 kg per acre, can be sprayed 3 to 5 times during the entire production period.
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