摘要
通过对A、B、C三种混播组合两个生产年度的研究结果表明,粗蛋白质、粗脂肪和灰分三种营养素的含量在组合间的刈割时期间均差异极显著;粗纤维在刈割时期间差异极显著,组合间差异不显著;无氮浸出物在组合间差异极显著,而在刈割时期间则无显著差异。粗蛋白质、粗脂肪和灰分的含量与刈割时期呈极显著负相关,粗纤维呈极显著相关,无氮浸出物则相关不显。说明,各组合牧草的主要营养素含量是随着刈割时期的早迟而发生相应的变化,刈割时期愈早,营养素含量愈高,品质愈好;愈迟,则营养损失严重,品质降低。
The results of two year study on A,B,C three type mixed sowing combinations indicate that the differences of the content of crude protein,crude fat and ash are extremely significant among the combinations or the cutting time, the differences of the content of crude fibre are extremely sigificant among the cutting time and not significant among the combinations, the differencesof NFE are extreme- ly significant among the combinations and not siginificant among the cutting time, the correlatons of the content of CP,CF and ash with the cutting time appear extremely signifucant negative, the correlations of CF and NFE with the cutting time show extremely significant and not sinificant respectively, so the nutrient content of the combinations varied with the cutting time,the earlier of the cutting time, the higher of the content of nutrient.
出处
《中国草地》
CSCD
1991年第3期8-12,共5页
Grassland of China
关键词
牧草
刈割期
营养动态
混播
Three type sowing combinations,different cutting time nutrient dynamics.
