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通过氮磷钾单因素肥料量级试验,掌握各个施肥单元不同施肥数量,构建作物施肥模型,为施肥分区和肥料配方提供依据。试验结果表明:增施氮、钾肥的增产作用不明显,西瓜产量随氮、钾施用量的增加呈现上下波动,适当增加磷肥用量,可以提高西瓜产量;增施氮肥可促进西瓜植株生长,促进糖分积累,但随着施氮量增加,糖分积累趋缓,磷肥对西瓜糖分积累效果不大,而合理增施钾肥可以提高西瓜的糖分积累。
Through the NPK single factor fertilizer level test, grasping each fertilization unit different fertilization quantity, build crop fertilization model, provide basis for fertilizer division and fertilizer formula. The results showed that the increasing yield of nitrogen and potassium fertilizer was not obvious. The yield of watermelon fluctuated with the increase of nitrogen and potassium application. Appropriate increase of phosphorus fertilizer could increase the yield of watermelon. Increasing nitrogen fertilizer could promote the growth of watermelon and promote the growth of watermelon However, with the increase of nitrogen application, the accumulation of sugars slowed down and the effect of phosphate fertilizer on the accumulation of sugar in watermelon was not significant. However, the rational application of potassium fertilizer could increase the sugar accumulation of watermelon.