Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Province | Yield in 1979 (kgha−1) | Yield in 2009(kgha−1) | Annual increase, 1979–2009 (kgha−1yr−1) |
| Heilongjiang (HLJ) | 3480 | 6398.3 | 94.14 |
| Hunan (HN) | 4440 | 6371.3 | 62.30 |
| Jiangxi (JX) | 3645 | 5807 | 69.74 |
| Sichuan (SC) | 4777.5 | 7499.4 | 87.80 |
| Guangxi (GX) | 3562.5 | 5392.5 | 59.03 |
