|
| 年代 |
播种面积 |
总产量（万吨） |
单产产量 |
| 万亩 |
千公顷 |
千克/亩 |
千克/公顷 |
| 2002 |
24
|
16
|
5.1
|
211
|
3167 |
| 2001 |
25.1
|
1.7
|
4.9
|
195.6
|
2934 |
| 2000 |
25.1
|
1.7
|
5.2
|
192.6
|
2889 |
| 1999 |
27
|
18
|
4.9
|
181.5
|
2722 |
| 1998 |
27.9
|
18.6
|
5.2
|
186.3
|
2795 |
| 1997 |
26.3
|
17.5
|
4.2
|
160
|
2400 |
| 1996 |
25.7
|
17.1
|
3.9
|
152
|
2280 |
| 1995 |
25.7
|
17.1
|
3.7
|
144.2
|
2163 |
| 1994 |
23.6
|
15.7
|
3.5
|
149
|
2229 |
| 1993 |
21.8
|
14.5
|
1.5
|
69
|
1034 |
| 1992 |
27
|
18
|
4.3
|
159
|
2389 |
| 1991 |
22.7
|
15.1
|
2.9
|
128
|
1920 |
| 1990 |
21
|
14
|
2.5
|
119
|
1785 |
| 1989 |
18.4
|
12.3
|
1.8
|
98
|
1470 |
| 1988 |
16.4
|
10.9
|
1.4
|
85
|
1275 |
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