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1.忌单纯施氮肥 容易造成蔓叶徒长,影响坐果率,降低甜度。应氮、磷、钾配合施用并多施有机肥。 2.忌施含氯化肥 施用含氯化肥会影响瓜果品质、降低甜度,因此,氮肥应选用尿素、硫酸铵;钾肥应选用硫酸钾,不宜用氯化铵和氯化钾。 3.忌早施浓肥 土壤干旱时施浓肥会使根细胞质水溶液向外渗透,引起细胞质壁分离,导致西瓜蔓叶生理失水而枯萎,甚至引起植株
1 avoid simple nitrogen fertilizer easily lead to vine leaves only affect the rate of fruit set, reduce the sweetness. Should be nitrogen, phosphorus and potassium with the application and more organic fertilizer. 2. Ji Shi chloride-containing fertilizer application of chlorinated fertilizers will affect the quality of fruits, reduce the sweetness, therefore, nitrogen should be used urea, ammonium sulfate; potassium should be used potassium sulfate, ammonium chloride and potassium should not be used. 3. Avoid early fertilizers fertilize the soil Drought fertilization will make the root of the cytoplasm aqueous solution penetrates outward, causing the separation of the cytoplasmic wall, resulting in physiological watermelon leaves wilt and withered water, or even cause plants