We can't be growing 200,000 acres of cotton in Arizona with flood irrigation.
我们不能在亚利桑那州用洪水灌溉种植 200,000 英亩的棉花。
PBS地球-气候变幻
Even if a farmer upgrades from flood irrigation to drip or sprinkler irrigation, any of the savings created from that upgrade are just passed along downstream to the next user.
即使农民从漫灌升级为滴灌或喷灌,升级所产生的任何节约也只会传递给下游的下一个用户。
英语百科
Surface irrigation
(重定向自Flood irrigation)
Surface irrigation is defined as the group of application techniques where water is applied and distributed over the soil surface by gravity. It is by far the most common form of irrigation throughout the world and has been practiced in many areas virtually unchanged for thousands of years.