近20年中国粮食生产变化特征及其对区域粮食供需格局的影响
|
Change in grain production in China and its impacts on spatial supply and demand distributions in recent two decades
|
图1. 1999—2018年全国和南/北方的粮食总产量变化情况 |
Fig. 1. Trends of total grain yield in China in 1999-2018 |
![]() |