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[目的]寻找最优的调亏灌溉方案,为节水高产栽培提供理论依据。[方法]于2006年对温室黄瓜在不同生长时期采用不同的土壤含水量灌溉下限(45%～75%)组合处理,测定不同灌溉情况下植株的部分生理指标、产量、果实品质及植株的水分利用效率。[结果]温室黄瓜初花期土壤水分含量为60%￣90%田间持水量,结果期土壤水分含量保持65%～90%田间持水量对于提高果实品质最为理想,该处理果实的还原糖、可溶性总糖、维生素C、可溶性蛋白质的含量分别比对照高39.94%、31.34%、3.14%、5.47%,且水分利用效率比对照高9.75%,保持60%～90%田间持水量节水效果最显著,比对照高18.84%,但果实品质明显不如65%～90%田间持水量。[结论]不同时期的水分亏缺有利于增强植株抵抗干旱胁迫的能力,结果期的适度干旱可以显著提高植株的水分利用效率,减少灌水量,且产量并无显著减少。
[Objective] The research aimed to find the optimal regulative deficit irrigation scheme and provide a theoretical basis for water-saving and high-yield cultivation. [Method] In 2006, the cucumber plants were treated with different irrigation levels (45% ~ 75%) under different irrigation periods, and some physiological indexes, yield, fruit quality and water content usage efficiency. [Result] The soil moisture content of greenhouse cucumber at flowering stage was 60% ~ 90% of the field capacity, and the soil water content of 65% ~ 90% in the result period was the most ideal for improving the fruit quality. The reducing sugar and soluble total Compared with the control, the contents of sugar, vitamin C and soluble protein were 39.94%, 31.34%, 3.14% and 5.47% higher than the control respectively, and the water use efficiency was 9.75% higher than that of the control. Maintaining the water holding capacity of 60% -90% 18.84% higher than the control, but the fruit quality is obviously not as good as 65% ~ 90% field capacity. [Conclusion] The water deficit at different stages was conducive to enhancing the ability of plants to resist drought stress. The moderate drought in the period could significantly improve the water use efficiency of plants and reduce the amount of irrigation, with no significant decrease in yield.