年代 Age | 品种个数 Number varieties | 变异区间 Variation interval/% | 变异幅度 Variance/% | 平均值 Average/% |
1985~1990 | 10 | 62.80~66.30 | 3.50 | 63.96 |
1991~1995 | 10 | 59.37~68.40 | 9.03 | 63.54 |
1996~2000 | 9 | 60.73~65.68 | 4.95 | 63.76 |
2001~2005 | 15 | 56.10~66.09 | 9.99 | 63.10 |
2006~2010 | 17 | 58.28~64.45 | 6.17 | 62.01 |
2011~2015 | 21 | 58.05~65.02 | 6.97 | 61.69 |
2016~2020 | 43 | 58.70~65.75 | 7.05 | 62.07 |
1985~2020 | 125 | 56.10~68.40 | 12.30 | 62.51 |