中文摘要：

从我国玉米未来需求与生产能力的缺口不断扩大的实际出发,分析了长江中下游传统粮棉产区主要作物种植结构变化,发现该区域内水稻生产集中度基本维持不变;小麦生产集中度除安徽有明显上涨趋势外,其余3省生产集中度则均在下降;湖北、安徽、湖南的玉米生产均有所上升;棉花在一些地区种植面积持续调减。基于传统玉米种植区玉米种植面积难以再扩大的背景,从国家产业布局、资源环境约束角度提出长江中下游传统粮棉产区扩大玉米生产的可能性,并对未来该区域扩大玉米种植进行了展望。

英文摘要：

Based on the fact that the gap of future demand and production ability of maize is increasingly expanding, this paper analyzes the changes of planting structure of main crops in traditional grain and cotton producing areas of middle and lower reaches of Yangtze River. The result shows that rice production maintains the dominant role in this region,while concentration of wheat is obvious increasing except Anhui province and deceasing in the other three provinces. Maize production in Hubei, Anhui and Hunan provinces all increases and the cotton planting areas in some areas are steadily reducing in recent years. Because it is difficult to further expand the maize planting area in dominant maize production regions, this paper proposes both the potential of increasing maize production in traditional grain and cotton planting areas of the middle and lower reaches of Yangtze River and the future prospect of maize growth in this area in the future.