以设施黄瓜为试材,采用田间小区试验,研究不同施肥处理和茬口对设施黄瓜产量、养分吸收规律及肥料的农学效应和肥料利用率的影响。结果表明:不同茬口黄瓜最佳施肥(OPT)处理产量高于农民常规施肥(FP)处理,但是二者差异均不显著;从经济效益角度上看,由于OPT处理肥料投入量少,降低了黄瓜种植的成本,其经济效益显著高于FP处理。从养分累积上看,由于FP处理施磷量较高,导致黄瓜对磷的累积量较高,但是氮肥的农学利用率和肥料利用率却较低;冬春茬设施黄瓜钾素是主要限制因子,其次是磷,氮素对其影响最小,而春茬黄瓜,氮素是主要限制因子。 Taking cucumber as experimental materials, field plot experiments were conducted to study the effects of different fertilization treatments and stubbles on the yield and nutrient uptake of cucumber plants, the agronomic effects of fertilizers and the fertilizer utilization efficiency. The results showed that the OPT yield of different stubble cucumbers was higher than that of conventional fertilization (FP), but the difference was insignificant. In the aspect of economic benefit, due to the small amount of fertilizer OPT, cucumber The cost of planting, its economic benefits significantly higher than the FP treatment. From the point of view of nutrient accumulation, due to the high phosphorus content in FP treatment, the accumulation of phosphorus in cucumber was higher, but the agronomic efficiency and fertilizer use efficiency of nitrogen fertilizer were lower; the potassium in winter and spring cucumber plants was the main limiting factor , Followed by phosphorus, nitrogen had the least impact on it, while spring cucumber and nitrogen were the main limiting factors.