一、材料和方法1.试验地的基本情况:1994年试验地设在公主岭市朝阳坡乡,地膜育苗,整地时一次性施肥,每667m~2施二铵40公斤,尿素15公斤,氯化钾15公斤。西瓜品种为大红宝,7株一小区,株行距450×210(cm),小区面积5.88m~2,3次重复,随机区组排列。1995年试验地设在公主岭市凤响乡农业技术推广站的试验 I. Materials and methods 1. The basic situation of the experimental site: In 1994, the experimental site was set up in Chaoyangpo Township, Gongzhuling City. The film was nursed back to the ground. The soil was fertilized once during land preparation. 40kg of diammonium, 15kg of urea, Potassium 15 kg. Watermelon varieties for the big red, 7 a small area, spacing 450 × 210 (cm), the area of ​​5.88m ~ 2,3 times repeated randomized block arrangement. Experimental test in 1995 in Gongzhuling City Fengxiang Township Agricultural Technology Extension Station test