一、注意不要单独施用氮素肥料。单施氮肥植株体内氮化物过多,果肉中所含糖分就会减少,质量降低,肉嫩味淡,色浅皮厚,有时带有酸味。氮、磷、钾三要素配合施用,就会促进瓜秧生长,促进植株体内糖分的积累,使瓜糖分含量提高,皮薄籽饱,味甘色浓,香醇可口,汁多甜脆。一般亩施碳铵20公斤或尿素10公斤、过磷酸钙30～40公斤、钾肥20～25公斤,施氮、磷、钾三元复合肥效果更好,品质更佳。二、注意不要过多施用人粪尿。西瓜底肥以腐 First, be careful not to use nitrogen fertilizer alone. Nitrogen fertilizer plants in the body too much nitrogen, the sugar contained in the pulp will be reduced, lower quality, tender meat, light skin thick, sometimes with sour. Nitrogen, phosphorus and potassium three elements with the application, it will promote the growth of melon seedlings, and promote the accumulation of sugar in plants, so that the content of melon sugar, thin skin full of seeds, sweet and concentrated, mellow and delicious, sweet and crisp juicy. General Mushi ammonium 20 kg or urea 10 kg, superphosphate 30 to 40 kg, potassium 20 to 25 kg, nitrogen, phosphorus and potassium ternary compound fertilizer better, better quality. Second, be careful not to overuse human excrement. Watermelon at the end of rot