紫色土坡耕地耕层质量障碍特征
|
Quality Barrier Characteristics of Cultivated Layer for Sloping Farmland in Purple Hilly Region
|
图2. 不同地力等级坡耕地土壤肥力指标变化特征 |
Fig. 2. Variation characteristics of soil fertility index of sloping farmland with different productivity grades of cultivated land |
![]() |