西瓜的生产实践表明，每生产100公斤西瓜约需吸收及0．19公斤、磷0．092jk斤，钾0．136公斤，可见其需肥量较多。一般来说，足量的氮肥是西瓜高产的基础。充足的磷肥可以促进植株的生长发育，促进花芽分化，使其早开花，早坐瓜、早成熟，而钾是植物体中多种酶的催化剂，能促进 Watermelon production practice shows that each production of about 100 kilograms of watermelon needs absorption and 0.19 kilograms, phosphorus 0.092jk jin, potassium 0.136 kilograms, we can see more fertilizer. In general, sufficient nitrogen fertilizer is the basis of high yield of watermelon. Adequate phosphate fertilizer can promote plant growth and development, promote flower bud differentiation, early flowering, early melon, early maturity, and potassium is a variety of enzymes in the plant catalyst, can promote