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This can be done by applying more fertilizer on the upper slopes and less fertilizer on the lower slopes so that the fertility gradient of the soil is reduced or overshadowed.
这可以通过在坡上部施用较多肥料而在坡下部施用较少的肥料来达到此目的，以便使坡地的土壤肥力上下梯度降低或完全一致。
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