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中文摘要：
在大田条件下研究了不同灌水和施磷组合对冬小麦整个生育阶段光和性能的影响。结果表明,灌水、施磷影响了冬小麦的生理指标。施磷主要是提高了作物的光合作用能力,从而使作物的瞬时水分利用效率提高;灌水主要促进了冬小麦的蒸腾速率,使光合速率/蒸腾速率的比值降低。冬小麦叶片的蒸腾和光合速率呈非线性关系,光合速率随蒸腾速率增加而缓慢增加,增加到一定程度后,光合速率不再增加。冬小麦叶片的蒸腾速率和瞬时水分利用效率呈直线负相关关系,瞬时水分利用效率随着蒸腾速率的增大而减小。试验条件下,灌水量为180 mm与施磷量120 kg/hm2是冬小麦节水效果较佳的组合。
英文摘要：
The experiment was completed in the field to study the effects of limited irrigation and phosphorus on leaf photosynthesis of winter wheat in whole growing stage.The result showed that effect of limited irrigation and phosphorus on physiological Index of winter wheat.Applying phosphorus mainly improve the activity of crop photosynthesis,resulting in the increase of short-time water use efficiency.Irrigation mainly accelerates transpiration rate of winter wheat,leading to the decrease of P/E.It is non-linear relationship between transpiration and photosynthesis of Winter wheat.The photosynthesis rate increases slowly with the increase of transpiration rate,and to some extent photosynthetic rate no longer increased.There was a linear negtive correlation between transpiration rate and water use efficiency of winter wheat,The WUE decreases slowly with the increase of transpiration rate.Irrigation water 180 mm and phosphorus 120 kg/hm2 were better water saving effect of winter wheat under this experiment condition.
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