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对紫花苜蓿９个不同半月龄的粗蛋白、细胞内容物、细胞壁、酸性洗涤纤维、纤维素和木质素含量进行了测试，并进行了统计分析。结果表明，这些营养成分含量随株龄的变化而变化，紫花苜蓿中粗蛋白、细胞内容物含量与株龄呈极显著负相关，细胞壁、酸性洗涤纤维、纤维素、木质素含量与株龄呈极显著正相关，用株龄变量建立了估测这些营养成分含量的回归方程，经检验，大部分准确度较高。
The contents of crude protein, cell contents, cell wall, acid detergent fiber, cellulose and lignin in nine different half-ages of alfalfa were tested and analyzed statistically. The results showed that the contents of these nutrients varied with age, the contents of crude protein and cell contents in alfalfa were extremely significantly negatively correlated with plant age, and the contents of cell wall, acid detergent fiber, cellulose, lignin and age Significantly positive correlation, with age-dependent variables to establish a regression equation to estimate the content of these nutrients, the test, most of the higher accuracy.