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谷子是重要的饲草作物,但其饲草品质性状研究滞后制约了谷子饲草品种培育和栽培。本研究对47个谷子品种在我国高寒农牧地区栽培的饲用干草品质性状进行了系统测定。结果表明,供试材料粗蛋白含量的变异范围为5.42%～12.45%,变异系数为14.25;粗脂肪含量的变异范围为0.64%～1.43%,变异系数为15.84;粗灰分含量的变异范围为8.50%～15.60%,变异系数为13.71;总磷含量的变异范围为0.10%～0.32%,变异系数为20.00;总钙含量的变异范围为0.27%～0.67%,变异系数为20.00。粗纤维、无氮浸出物和水分含量表现出较小的变异。主成分分析表明,影响谷子饲草品质的主要性状是粗纤维、粗灰分、粗蛋白和无氮浸出物,粗蛋白与粗纤维和无氮浸出物均为负相关。综合表明,Li05-569、饿死驴、系295和红根谷是品质性状综合表现优良的品种。
Millet is an important forage crop, but the lag of forage quality traits restricts cultivation and cultivation of millet forage varieties. In this study, we conducted a systematic survey on the quality characteristics of forage hay cultivated in 47 alpine regions in China. The results showed that the variation range of crude protein content was 5.42% ~ 12.45% and the coefficient of variation was 14.25. The variation range of crude fat content was 0.64% ~ 1.43% and the variation coefficient was 15.84. The variation range of crude ash content was 8.50 % -15.60%, the coefficient of variation was 13.71; the range of total phosphorus content was 0.10% -0.32%, the coefficient of variation was 20.00; the range of total calcium content was 0.27% -0.67% and the coefficient of variation was 20.00. Crude fiber, nitrogen-free extract and moisture content showed minor variation. The principal component analysis showed that the main characters affecting the quality of forage were crude fiber, crude ash, crude protein and nitrogen-free extract. Crude protein was negatively correlated with crude fiber and nitrogen-free extract. Comprehensive shows that, Li05-569, starved donkey, Department of 295 and Red Root Valley is a comprehensive performance of good quality traits varieties.