nitrate-nitrogen reduction

例句：

1. 1.Nitrification is a process where nitrate is reduced to nitrogen gas.
   硝化是一个将硝酸盐转化为氮气的过程。
2. 2.In agricultural practices, the reduction of nitrate in soil can lead to improved crop yields.
   在农业实践中，土壤中硝酸盐的减少可以导致作物产量的提高。
3. 3.The process of reducing nitrate in wastewater is crucial for environmental sustainability.
   废水中硝酸盐的还原过程对于环境可持续性至关重要。