Through blank experiment of terraces. it shows that the soil fertility of newly built terraces is distributed in a crumby shape which is remarkably different than that of the ordinary farm soil.
通过梯田土壤空白试验，证明新修梯田土壤肥力呈现团块状分布规律，这与一般农地土壤肥力分布具有明显的区别。
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