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通过在西瓜上进行肥料量级试验,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。试验结果显示:1)对西瓜产量的影响,增施氮、钾肥的增产作用都不明显,产量随氮、钾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,2)得出了氮、磷、钾的一元二次方程,并计算出了最高、最佳施肥量和相应的最高和最佳产量,3)对西瓜糖度的影响,增施氮肥可促进植株生长,造成产量增加引起糖分积累升高,在氮肥满足生长后,造成糖分积累效应趋于平缓;磷肥对西瓜糖分积累效果作用不大;合理增施钾肥增加了西瓜体内的糖分积累,提高了西瓜品质。
By measuring the amount of fertilizers on watermelon, we can know the different fertilizing quantity of each fertilizing unit and construct the fertilizing model of crop to provide the basis for fertilizing zoning and fertilizer formula. The results showed that: 1) The effect of increasing yield of watermelon was not obvious with the increase of nitrogen and potassium fertilizer. The yield fluctuated up and down with the increase of nitrogen and potassium. The yield of watermelon could be increased by appropriately increasing the amount of phosphate fertilizer. 2) Nitrogen, phosphorus and potassium, and calculated the highest, the best fertilization and the corresponding maximum and optimum yield, 3) the impact on the sugar degree of sugar, nitrogen fertilizer can promote plant growth, resulting in increased production caused Sugar accumulation increased, after the nitrogen fertilizer to meet the growth, resulting in the accumulation of sugar tends to be flat; phosphorus fertilizer on watermelon accumulation of little effect; a reasonable increase in potassium increased watermelon sugar accumulation and improve watermelon quality.