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为了寻求合理的微咸水利用方式以及揭示微咸水灌溉下作物生理生长响应机理，在黄河三角洲地区的典型引黄灌区开展了冬小麦微咸水灌溉试验，研究了该地区微咸水灌溉对冬小麦光合特性、干物质及产量的影响。结果表明，与淡水灌溉相比，采用矿化度 3 g/L 微咸水灌溉时，拔节期、灌浆期灌两水和拔节期灌一水均会导致气孔导度和蒸腾速率的下降，但是对净光合速率的影响却不显著，微咸水灌溉在降低蒸腾速率的同时维持着较高的净光合速率，叶片水分利用效率提高了 2.8%～43.2%；微咸水灌溉抑制了冬小麦的株高和干物质累积，淡水微咸水组合灌溉虽然导致产量降低 3%～13%，但节约淡水资源 50%～67%；相同灌溉水质下，与灌浆期不灌水相比，灌浆水有利于籽粒的灌浆，提高了千粒重，实现冬小麦增产 11.2%～11.4%。因此，淡水-微咸水-微咸水的灌溉模式用于该地区冬小麦田间灌溉是可行的，对该地区的农业可持续发展具有重要的现实意义。
In order to find a reasonable mode of using brackish water and to reveal the physiological response mechanism of brackish water irrigation, brackish water irrigation experiment was carried out in the typical Yellow River Irrigation District of the Yellow River Delta to study the effect of brackish water irrigation on winter wheat Photosynthetic characteristics, dry matter and yield. The results showed that compared with freshwater irrigation, irrigation with brackish water with salinity 3 g / L could reduce the stomatal conductance and transpiration rate at jointing stage and filling irrigation stage and irrigation stage at filling stage. However, The effect of brackish water on photosynthetic rate was insignificant. Brackish water irrigation maintained high net photosynthetic rate while transpiration rate decreased, water use efficiency increased by 2.8% ~ 43.2%. Brackish water irrigation restrained the growth of winter wheat High and dry matter accumulation, freshwater brackish water combination irrigation, while reducing the yield by 3% to 13%, but saving freshwater resources 50% to 67%; under the same irrigation water quality, compared with the filling period without irrigation, grouting water is conducive to the grain Of the grouting, improve the 1000-grain weight, increase winter wheat yield 11.2% ~ 11.4%. Therefore, the irrigation mode of freshwater - brackish water - brackish water is feasible for the winter wheat field irrigation in this area, which is of great practical significance for the sustainable development of agriculture in this area.