A split plot experiment was conducted to study the effects of supplemental irrigation and nitrogen (N)-and phosphorus (P) fertilization on the soil water utilization,N uptake,and grain yield of Triticum aestivum on loess tableland.In the study year,supplemental irrigation and N-and P fertilization increased the grain yield of T.aestivum by 0-24.6% and 134.1%-240.2%,respectively.Nitrogen fertilization was the main factor in improving the grain yield of T.aestivum,while supplemental irrigation and P fertiliza...
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