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中国粮食主产区耕地撂荒程度及其对粮食产量的影响
李雨凌1,2(), 马雯秋1,2,3, 姜广辉1,2(), 李广泳4, 周丁扬1,2
The degree of cultivated land abandonment and its influence on grain yield in main grain producing areas of China
LI Yu-ling1,2(), MA Wen-qiu1,2,3, JIANG Guang-hui1,2(), LI Guang-yong4, ZHOU Ding-yang1,2

图1. 耕地撂荒对粮食产量的作用机制框架

Fig. 1. Mechanism framework of the effects of cultivated land abandonment on grain yield