在天津武清区以田间小区试验进行了设施蔬菜土壤耗水时空特征和水分亏缺敏感性研究。分别在黄瓜苗期(定植后缓苗期)、初花期、初瓜期、盛瓜期等生育期的其中一个生育期灌溉常规水量的50%、75%,其余生育期恢复到常规灌水量,分层监测土壤含水量和黄瓜产量。结果表明,在土壤质地黏重的滨海地区设施条件下,不论是灌溉常规水量50%的处理,还是灌溉常规水量75%的处理,其田间耗水量均以黄瓜盛瓜期较大,而且以苗期减少灌水处理的田间耗水量最高;田间耗水强度以盛瓜期较高,黄瓜苗期、初花期缺水会增加盛瓜期的耗水强度;黄瓜定植后的苗期水分亏缺敏感指数最大,其次是初花期,而初瓜和盛瓜期为负值。苗期和初花期缺水对黄瓜产量影响较大,初瓜期、盛瓜期适当减少灌水定额对产量影响较小。 The spatial and temporal characteristics of soil water consumption and the sensitivity to water deficit in vegetable fields were studied in field plots in Wuqing District, Tianjin. Respectively, in the cucumber seedling (rehmannia after planting), early flowering, early melon, melon and other growth stages of one of the growing period of irrigation conventional water 50%, 75%, the rest of the growth period back to the conventional irrigation, Stratified monitoring of soil moisture content and cucumber production. The results showed that under the conditions of the coastal areas with sticky soil texture, both the water consumption of 50% irrigation conventional water treatment and conventional 75% The highest water consumption was in the field during the period of reduced irrigation treatment. The water consumption intensity in the field was higher in the full melon stage, and the water deficit in cucumber seedling and early flowering stage increased the water consumption intensity in the full melon stage. The water stress sensitivity index The largest, followed by the first flowering, and early melon and melon negative. Waterlogging at seedling and flowering stage had a significant impact on cucumber yield. The appropriate irrigation schedule reduced the yield slightly during the early melon and watermelon stages.