salinification

例句：

1. 1.The soil is severely salinified due to the long-term irrigation with seawater.
   由于长期用海水灌溉，土壤严重盐渍化。
2. 2.The saltwater intrusion has caused significant changes in the ecosystem.
   海水入侵导致生态系统发生了显著变化。
3. 3. To prevent salinization, farmers need to reduce the use of fertilizers and improve irrigation efficiency.
   为了防止盐渍化，农民需要减少化肥使用并提高灌溉效率。