nitrate

1. N-MASS Nitrate is a chemical compound that includes nitrogen and oxygen. Nitrates are used as fertilizers in agriculture. 硝酸鹽

High levels of nitrate occur in the Midwest because of the heavy use of fertilizers. 因?yàn)榇罅渴褂没?，中西部地區(qū)的硝酸鹽含量很高。