brackish water irrigation

例句：

1. 1. The farmers used to use brackish water irrigation in theirfields.
   农民过去在他们的田地里使用咸水灌溉。
2. 2. This method of irrigationis more environmentally friendly than traditional methods.
   这种方法比传统的灌溉方法更环保。
3. 3. In recentyears, scientists have been exploring new waysto improve the efficiency of brackishwater irrigation.
   近年来，科学家们一直在探索提高咸水灌溉效率的新方法。