| 序号 | 时间 (年) |
数据 (吨/公顷) |
|---|---|---|
| 1 | 2025 | |
| 2 | 2024 | |
| 3 | 2023 | |
| 4 | 2022 | |
| 5 | 2021 | |
| 6 | 2020 | |
| 7 | 2019 | 2.70 |
| 8 | 2018 | 2.72 |
| 9 | 2017 | 3.11 |
| 10 | 2016 | 2.69 |
| 11 | 2015 | 2.39 |
| 12 | 2014 | 2.50 |
| 13 | 2013 | 2.23 |
| 14 | 2012 | 1.77 |
| 15 | 2011 | 2.27 |
| 16 | 2010 | 1.91 |
| 17 | 2009 | 2.31 |
| 18 | 2008 | 2.44 |
| 19 | 2007 | 2.10 |
| 20 | 2006 | 1.96 |
| 21 | 2005 | 1.94 |
| 22 | 2004 | 1.98 |
| 23 | 2003 | 1.70 |
| 24 | 2002 | 2.07 |
| 25 | 2001 | 2.06 |
| 26 | 2000 | 1.62 |
| 27 | 1999 | 1.56 |
| 28 | 1998 | 1.35 |
| 29 | 1997 | 1.84 |
| 30 | 1996 | 1.55 |
| 31 | 1995 | 1.40 |
| 32 | 1994 | 1.53 |
| 33 | 1993 | 1.82 |
| 34 | 1992 | 1.96 |
| 35 | 1991 | 1.73 |
| 36 | 1990 | 2.11 |
| 37 | 1989 | 1.81 |
| 38 | 1988 | 1.62 |
| 39 | 1987 | 1.54 |
