排水灌溉,計算題 - 考試
By Caitlin
at 2016-03-17T16:49
at 2016-03-17T16:49
Table of Contents
已知灌溉面積為100ha,整地錯開日數為20天,整地水深為150mm,田間需水深為8mm,輸
配水損失為40%,試求渠道通水容量?
答:0.299cams
已知一次純灌溉水深,若灌溉效率為65%,流量為0.12 , 面積為5ha , 則灌溉所需時間為
多少he
答案:26.62he
算了很久一直算不出答案,想請教一下大家
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