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在自然大田和人工防雨池栽条件下，研究了限量灌水对冬小麦光合性能和水分利用的影响。结果表明，田间土壤耗水强度以拔节至挑旗期间为最大，此期间限量灌水较显著地减缓了冬小麦生育后期光合面积的衰减，使叶片的气孔阻力降低，蒸腾强度升高，群体和叶片的光合速率均升高，改善了光合性能，提高了产量水分利用率
The effects of limited irrigation on photosynthetic characteristics and water use efficiency of winter wheat were studied under natural field conditions and artificial rain-pool conditions. The results showed that the water consumption intensity of soil in the field was the largest during the period from jointing to flagging, and the limited irrigation significantly slowed the decline of photosynthetic area in the later growth period of winter wheat, decreased the stomatal resistance and increased the transpiration intensity of the population and leaves Photosynthetic rate were increased, improved photosynthetic properties, increased yield and water use efficiency