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在青藏高原海拔3768米的高寒草甸地区进行的试验结果表明,施氮能使牧草产量和粗蛋白质含量大幅度提高,无氮浸出物含量明显下降。不同施氮量与糙毛鹅观草的增产量、粗蛋白质含量和无氮浸出物含量之间的相关性,均可用方程Y=X/(a+bX)来表达。
The experiment carried out in the alpine meadow area at 3768 meters above sea level in the Qinghai-Tibet Plateau showed that nitrogen application increased the yield of forage and the content of crude protein significantly, and the content of nitrogen-free extract decreased obviously. The correlation between different nitrogen application rates and yield increase, crude protein content and nitrogen-free extract content can be expressed by the equation Y = X / (a + bX).