Studies on compensative effects of nitrogen and phosphorus on some main physiological processes (such as photosynthesis, transpiration and so on) and yield of wheat under water stress were reviewed, and the mechanism of mineral nutrition in increasing WUE and yield of wheat in dryland were analyzed. The mechanisms and effects of nitrogen and phosphorus on wheat in dryland were different. Phosphorus might stimulate root growth, improve water condition and increase yield and WUE remarkably under severe water ...
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