land filtration irrigation

例句：

1. 1. The land filtration irrigation system is designed to improve water quality in agricultural areas.
   土地过滤灌溉系统旨在改善农业地区的水质。
2. 2.The farmers used to rely on natural rainwater for irrigation, but now they switch to using the filtration irrigation method.
   农民过去依赖天然雨水进行灌溉，但现在他们转而使用过滤灌溉方法。
3. 3. The filtration irrigation system has proven to be an effective way to conserve water and reduce pollution in urbanareas.
   过滤灌溉系统已被证明是节约水资源和减少城市污染的有效方法。