国际粮食贸易影响下东北黑土地生产压力变化与保护策略

邓祥征, 梁立, 廖晓勇, 刘玉洁, 李志慧, 岳天祥, 董金玮, 孙志刚, 陈明星

Research on changes in grain production pressure and protection strategies in the black soil region of Northeast China under the influence of international grain trade

DENG Xiang-zheng, LIANG Li, LIAO Xiao-yong, LIU Yu-jie, LI Zhi-hui, YUE Tian-xiang, DONG Jin-wei, SUN Zhi-gang, CHEN Ming-xing

图1 2000—2020年东北黑土地粮食（玉米、稻谷、大豆）生产耕地压力指数及变化

Fig. 1 Cropland pressure index and its change of grain production (corn, rice, soybean) in the black soil region of Northeast China during 2000-2020