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控氮增磷种植西瓜应少施氮肥,若施氮肥过多,合成的蛋白质也越多,消耗的糖分也越多。因此,应多施有机肥和适当增施磷肥。每667米2施土杂肥300千克、猪牛粪500千克、人粪尿400千克和饼肥80～100千克、磷肥30千克作基肥,或在幼瓜形成初期,沿瓜苗根部深施磷肥30千克,可使西瓜糖分提高3～4度。
Controlled nitrogen phosphorus planting watermelon should be less nitrogen fertilizer, if too much nitrogen fertilizer, the more protein synthesis, the more sugar consumption. Therefore, more organic fertilizers and proper application of phosphate fertilizer should be applied. Each 667 m 2 Shi Tu 300 kilograms of fertilizer, pig manure 500 kg, 400 kg of human excrement and cake 80 to 100 kg, 30 kg of phosphate fertilizer for the base, or early in the formation of young melons, deep roots along the root of the fertilizer P Kg, watermelon sugar can increase 3 to 4 degrees.