This proved that the water management system was capable of providing additional food by way of irrigation to a substantial number of people.
这证明了水管理系统曾经可以通过灌溉的方式，为很多人提供额外的食物。
2
Within a certain range, the rate of water saving might be improved by adding number of irrigation cycles and shortening the period of irrigation cycle.
在一定范围内，适当缩短周期灌水时间，增加灌水周期数会提高涌流畦灌的节水率。
3
But as the number of irrigation increased, the field waters consumption increased and the water use efficiency remarkably declined.