中国粮食主产区耕地撂荒程度及其对粮食产量的影响
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The degree of cultivated land abandonment and its influence on grain yield in main grain producing areas of China
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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 |
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