With the increasing of soil layers, the effects of mulch tillage on soil water also decreased.
随土体深度的增加覆盖耕作对土壤水分的影响减弱。
参考来源 - 晋西旱塬地区覆盖耕作农田水分有效性及其利用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
与常规耕作方式相比，随着秸秆覆盖量增加，土壤水分增加。
Compared with conventional tillage method, the mulch tillage practice increased soil water content.
用大量秸秆残茬覆盖地表是保护性耕作的主要特征之一。
Using many straws to cover the earth is one of main character of protection cultivation.
格田面积受限于地面高度的变化、现有水量均匀覆盖于渗透性土壤的面积大小及耕作因素。
The area of a basin may be limited by elevation changes, by the size that can be covered uniformly by the available water supply on permeable soils, or by cropping factors.
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