Nitrate Pollution of Vegetables and Its Control Measures in Daqing City

The author tested the content of nitrate in fresh vegetables and that stored in winter in the markets in Daqing city.The result showed that leaf vegetables contained the highest amount of nitrate,root vegetables came next,and eggplant vegetables range the last;while among the vegetables stored in winter,Chinese cabbage ranged the first,radish came next,potato and cabbage contained the lowest percentage of nitrate pollution.Upon the test and analysis,the author put forward some preventive measures against nitrate pollution.