Differentiation of a variety of forage with minor nutrient discrepancy by using GI can indicate that GI is an authoritative index evaluating forage quality.
使用GI值能明显区分养分含量差异很小的不同种类牧草，这说明分级指数是评价牧草营养价值的最权威指标。
2
Leaf number index right should the spike differentiation all stages within different variety were very similar.
不同品种的叶龄指数所对应的雄、雌穗分化各时期是基本一致的。
3
With 12 maize varieties used as materials, the regression relationship between the leaf number index and spike differentiation were studied under the spring and summer sowing.