宁夏设施番茄膜下滴灌条件下耗水规律和水分利用效率

为探索宁夏中东部干旱带设施番茄需水规律,在宁夏盐池温室大棚里进行小区栽培试验,研究了不同灌水定额对番茄产量和生理生化指标的影响。结果显示:不同阶段番茄的耗水量不同,平均日耗水量为1.31~3.73 mm/d,开花坐果期最大,日耗水强度达到7.31 mm/d。不同灌水定额处理对番茄茎叶、根的生物量及产量有显著的影响,灌水量为375 mm的处理产量达到195 898 kg/hm2,比对照增产75%,达到显著水平,水分利用率达到3.45 kg/m3。并初步制定了适合该地区设施番茄栽培的灌溉制度。

Research of Water Consumption Regularity with Drip Irrigation under Mulch of Greenhouse Tomato in Ningxia

In order to explore the water requirement of tomato in greenhouse at arid area in central Ningxia,some irrigation experiments were conducted in the Yanchi county to evaluate the effect on grow,yield and water use efficiency(WUE) of greenhouse tomato.The result showed that the evapotranspiration(ET) of different irrigation treatments at different grow stage was various,daily water consumption was 1.31-3.73 mm/d,and in the flowering and fruit bearing period,and water consumption reached the maximum,7.31 mm/d....