有经验的瓜农都知道,把香瓜和西瓜种在较肥的豆茬地里或施用氮肥时,瓜的个头虽大,但甜度下降;而种在谷子、高粱等较差的茬口上,或者种在肥力较差的砂性土壤上,瓜味就甘甜。但是,如果科学施肥,即使将香瓜和西瓜种在肥地里或施用适量的氮肥,也能够使瓜的甜度增加。实践证明,要提高瓜的品质,必须增施适量的钾肥,因为钾元素对糖分的形成起着重要的促进作用。1983年,新城子乡王驿村郑治海在肥力上中等的豆茬地种瓜,于花前和果实膨大前期,结合灌 Guinin have all experience that melon and watermelon planted in the more fat stubble field or nitrogen fertilizer, the melon’s head is large, but the sweetness of decline; and planted in millet, sorghum and other poor stubble, or In poor soil fertility of the soil, the melon taste sweet. However, if scientific fertilization, even if the muskmelon and watermelon planted in the fertilizer or the application of nitrogen fertilizer, but also to increase the sweetness of melon. Practice has proved that to improve the quality of melon, we must increase the amount of potash, because the formation of potassium on the sugar plays an important role in promoting. In 1983, Wang Cheng Village, Xinchengzi Township Zheng Zhihai medium-sized stubble in the fertilizer on the species of melon, in the early pre-flower and fruit enlargement, combined with irrigation