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		近30年我国谷子生产时空变化与区域优势研究
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			Spatiotemporal Variation and Regional Advantages of Foxtail Millet Production in Recent 30 Years in China
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| 图4. 1985—2015年全国不同农作区谷子播种面积(a)、总产量(b)、单产(c)变化情况 | 
| Fig. 4. Millet sown area (a), total production (b) and yield (c) in different farming system regions from 1985 to 2015 | 
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