Soil erosion and fertilizer application made soil acidified in slopefield, soil acidification increased significantly with depth.
水土流失和化肥的施用使得坡耕地土壤发生了酸化，随土层的加深而酸化加重。
2
On compound slopefield, the soil erosion displayed strong, week and depositional on steep, gentle and concave slopes, respectively.
在复合坡面，随坡面的陡、缓、凹，土壤侵蚀表现强、弱、沉积；
3
Whole potato tuber seeding is a key for enhancing the growth and increasing potato yield, with a yield increase more than 16% and 20% in plain fertile field and slopefield, respectively.