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在灵台县旱塬地上进行的硝酸磷肥施用量试验研究结果表明，硝酸磷肥不同施用量对冬小麦产量有显著影响，其在冬小麦上的最佳施用量为５６２．５ｋｇ／ｈｍ２，肥料投入产出比为１∶３．８２。
The results showed that the different application rates of nitrate fertilizer had a significant effect on the yield of winter wheat. The best application rate of winter wheat was 562.5kg / hm2, the input-output ratio of fertilizer Is 1: 3.82.