西北地区不同土壤水分处理对温室大棚番茄产量和耗水的影响

根据番茄的生长发育特点,分别以50%、60%、75%田间持水量作为苗期、花期、结果期的土壤水分下限,按照不同的土壤水分上限设置不同的灌水量处理。对番茄不同生育期的灌水量、耗水量、产量、水分利用效率及其关系进行了研究。结果表明,灌水控制上限和下限之间存在交互效应,番茄灌水量、耗水量与其具有显著的正相关性;当灌水控制下限一定时,耗水强度和耗水模数随灌水控制上限的减小呈降低趋势;番茄苗期、花期和结果期的灌水控制上、下限(占田持)分别控制在50%～65%、60%～75%和75%～85%为宜。

Based on the growth and development rule of tomato,the lower limits of soil moisture in its seedling stage,flowering and fruit setting stage and fruiting bearing stage were respectively set as 50%,60% and 75% of the field maintaining water quantity,different irrigation water amount was controlled according to different soil irrigation maximum.The relationship between irrigation water and water consumption amount,yield and water use efficiency were studied.Results indicate that,the irrigation requirement and...