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紫色土坡耕地耕层质量障碍特征
宋鸽1,史东梅1,曾小英2,蒋光毅3,江娜1,叶青1
Quality Barrier Characteristics of Cultivated Layer for Sloping Farmland in Purple Hilly Region
Ge SONG1,DongMei SHI1,XiaoYing ZENG2,GuangYi JIANG3,Na JIANG1,Qing YE1

图5. 不同地力等级坡耕地农作物产量对耕层质量指数的响应特征

Fig. 5. Response of crop yield to cultivated layer quality index of sloping farmland with different land productivity grades