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为了提高寒地半干旱地区糜子产量及品质,采用随机区组设计,设5个施氮水平(0、45、60、135、180kg.hm-2),研究了不同施氮量对糜子产量和品质的影响。结果表明:随着施氮量水平的增加,糜子产量先升后降呈单峰曲线变化,有极大值,过量施用氮肥会导致糜子产量下降;糜子粗蛋白含量和脂肪含量随着施氮量的增加而逐渐提高,淀粉含量、直链淀粉含量、支链淀粉含量均随着施氮量的增加而下降,呈负相关。当氮肥水平为45～60kg.hm-2时,糜子的产量最高、品质较好。
In order to improve the yield and quality of broomcorn millet in cold and semi-arid region, five nitrogen application rates (0, 45, 60, 135, 180kg.hm-2) Quality impact. The results showed that with the increase of nitrogen application rate, the yield of the first millet increased and then changed to the single peak curve, with the maximum value. Excessive application of nitrogen fertilizer would lead to the decrease of the yield of millet. The content of crude protein and fat of millet increased with the nitrogen application rate The starch content, amylose content and amylopectin content decreased with the increase of nitrogen application rate, which was negatively correlated. When the level of nitrogen fertilizer is 45 ~ 60kg.hm-2, the yield of millet is the highest and the quality is better.