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试验于１９８８～１９９２年在山西省永济县虞乡进行，结果表明，旱地施肥在不同年型和不同肥力条件下，对冬小麦产量的影响不同。地力瘠薄时，单施化肥小麦增产幅度小（０．７％～２９．９％），对产量的影响是丰水年＞常水年＞歉水年；有机肥与化肥配合施用，小麦增产幅度大（８４．７％～１５．８％），对产量的影响是歉水年＞常水年＞丰水年。施肥对旱地小麦产量的作用，主要是增加了小麦叶面积，延缓叶片衰老，从而提高了小麦对土壤水分的利用效率，实现旱地小麦高产、稳产。
The experiment was carried out in Yuxiang, Yongji County, Shanxi Province from 1988 to 1992. The results showed that dryland fertilization had different effects on winter wheat yield under different years and different fertility conditions. When soil fertility was poor, the rate of yield increase of single application of chemical fertilizer wheat was small (0.7% -29.9%), and the effect on yield was wet year> normal water year> apology year; with organic manure and chemical fertilizer, wheat yield Large (84.7% ~ 15.8%), the impact of yield is apologized water year> Changshui> wet years. The effect of fertilization on the yield of dry land wheat is mainly to increase the leaf area of wheat and delay the leaf senescence so as to improve the utilization efficiency of wheat to soil moisture and realize the high yield and stable yield of wheat in dry land.