西瓜果实多汁而味甜，含糖量可达 １２％，合理施肥是保证西瓜高产，提高甜度的重要措施。因此，须注意六点： 一、不宜单纯施用氮素肥料：西瓜需肥量大，全生育期表现为前期氮多、钾少、磷更少，中后期钾多的吸肥特点。单纯施用氮素肥料，容易造成蔓叶徒长，影响座果率，降低 Watermelon fruit juicy and sweet, sugar content of up to 12%, reasonable fertilization is to ensure high yield watermelon, an important measure to increase the sweetness. Therefore, we must pay attention to six points: First, not simply the application of nitrogen fertilizer: watermelon need fertilizer, the whole growth period for the early N, potassium less phosphorus less absorption of potassium in the late characteristics. Simple application of nitrogen fertilizer, easy to cause vine leaves only affect the rate of fruit set, reduce