研究结果表明：旱地糜子对氮、磷、钾的吸收生长前期速度缓慢，吸肥量较少，生长中期速度逐渐加快并达高峰，吸肥量最多，其中氮与钾的吸收高峰在拔节至抽穗期，磷的吸收高峰在抽穗至灌浆期，生长后期速度逐渐减弱，吸肥量明显减少。吸肥量以氮最多、钾次之、磷最少，对氮、磷、钾的吸肥比例为１∶０．２９∶０．５６。吸肥量与生育日数呈明显的指数相关（ｒ≥０．９５４）。 The results showed that the absorption rate of nitrogen, phosphorus and potassium in dryland was slow at the early growth stage, and the amount of absorbed fertilizer was low. The midgrowth speed accelerated and peaked and the amount of uptake was highest. The absorption peak of nitrogen and potassium was between jointing and heading Phosphorus uptake peaked from heading to grain filling stage, and then gradually decreased in the late growth stage. The amount of fertilizer to nitrogen up, followed by potassium, phosphorus at least, on nitrogen, phosphorus and potassium absorption ratio of 1:0.29:0.56. The amount of fat absorption and birth days showed a significant exponential (r ≥ 0.954).