Contour planning with or without terracing is effective in conserving both soil and moisture . 等高栽植，无论做或不做梯田对于保持水土都能有效。
2.
Contour planting is one of the best systems adapted to cultivation management on rolling or sloping land . 等高栽植是适于坡地或起伏地的最好栽培管理方式之一。
3.
Contour planting with or without terraces is one of the best systems adapted to cultivation management on rolling or sloping land . 等高栽植（不论有无梯田）是适于坡地或起伏地的最好栽培管理的方式之一。
