每块格田内的地面高度应尽可能均匀一致——一定要要限制在5～10厘米的范围内。
The elevations within any one basin should be as uniform as possible-certainly within a range of 5 or 10 cm.
梯式灌溉就是一个例子，这种灌溉把地面平整成有坡度的畦田，或水平的格田。
Irrigation terraces made with surfaces that either slope like borders or are level like basins are one example.
在前年一个冬天的晚上，我做完作业准备睡觉时突然想起老师叫我们买田字格本子在上面写作业。
In the year before one winter's night, ready to go to bed after I finish my homework when all of a sudden the teacher told us to buy matts book write my homework on it.
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.
在格田的一侧必须有足以淹没格田的供水渠道或其他供水设施。
A ditch or other water supply large enough to flood the basin must be available on one side.
格田淹灌的田间准备是在每一个灌溉田块周围形成15—50厘米高的窄田埂。
Land preparation for basin irrigation is accomplished by forming a narrow ridge between 15 and 50 cm high on all sides of each area to be flooded.
灌可以描绘成长条形的格田，沿其长边方向具有较缓的坡度。
Border irrigation can be described as elongated basins with a gentle slope in the long direction.
灌可以描绘成长条形的格田，沿其长边方向具有较缓的坡度。
Border irrigation can be described as elongated basins with a gentle slope in the long direction.
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