中文摘要：

研究了不同灌水控制下限条件下日光温室芹菜的外观形态，地上部分干物质积累，耗水规律，灌溉指标以及产量与耗水量的关系。根据芹菜的生理特性及耗水特性确定其适宜的土壤水分控制下限为T70（占田间持水率的70％），在T70条件下的芹菜植株生长健壮，地上部分干物质积累及产量最大，水分利用效率和灌溉水利用效率最高。此指标作为灌溉水分控制下限，利于温室栽培芹菜的发育，地上部分干物质积累，水分利用效率和灌溉水利用效率的提高。

英文摘要：

The influence of different irrigation start-points on celery＇s growth, dry matter accumulation, water-consuming patterns, the relationship between yield and water consumption have studied. The experimental study on water-saving irrigation index for greenhouse celery shows that on the basis of irrigation start-point of 70%. Under 70% soil water, the growth, the dry matter accumulation, the yield, water use efficiency and irrigation water use efficiency are the best. This range of soil water was in favor of improving the growth the WUE and IWUE for celery cultivation in greenhouse.