Differentiationof 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
By the methods of LQ index and ID index, this paper makes a statistical study on the regional differentiationof food supplies in China from 1990 to 2002.
本文采用LQ指数和ID指数，对中国在1990年和2002年粮食生产的区域分化状况进行了统计分析。
3
Based on the statistic analysis of the lychee yield and climate data in the last 50 years of 20 century, the key stage and temperature index in the lychee bud differentiation is determined.