农田排水 meaning in English

agricultural drain
farm drainage
field drainage

In drainage of agricultural lands, a filter or gravel envelope is used to prevent the entrance of fine sand and silt into the drains .
在农田排水中常常采用砾石或过滤层来防止粉细砂和泥沙进入排水沟。
Single wall corrugated plastics pipes for agricultural drainage
农田排水用塑料单壁波纹管
Technical code for farmland drainage project
农田排水工程技术规范
Agricultural drainage . corrugated unplasticized pvc pipes . specifications
农田排水.未增塑聚氯乙烯波纹管.规范
Standard of land drainage test
农田排水试验规范

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