研究表明，西瓜苗期对氮、磷、钾的吸收很少。随着植株的生长逐渐增多，抽蔓到一棚瓜成熟期间对氮的吸收有明显的线性关系，回归方程为ｙ＝０．１４１９ｘ－５．３８７８，ｒ＝０．９９７１＊＊。座果后对磷的吸收逐渐增多；开花结果后对钾的吸收逐渐增多。西瓜植株对、氮、磷、钾的分配在结果前主要用于叶的发育和建成，其次是茎、根的生长；座果后，逐渐转向果实的发育 Studies have shown that watermelon seedling nitrogen, phosphorus, potassium absorption is very small. With the gradual increase of plant growth, there was a clear linear relationship between nitrogen uptake and ripening. The regression equation was y = 0.1419x-5.3878, r = 0.9971 **. Fruit after the absorption of phosphorus gradually increased; flowering after the absorption of potassium gradually increased. Watermelon plant pairs, nitrogen, phosphorus and potassium distribution before the results are mainly used for leaf development and built, followed by the growth of stems and roots; fruit, and gradually turned to fruit development