关键词: 牛蒡果寡糖, 牛蒡果寡糖, 绵羊, 生产性能, 氮平衡

Abstract:

In view of the situation of the nitrate pollution in ground water nitrate in China is grave, how to control it is very important. In order to use the experience of developed countries for reference, on the basis of searching a lot of foreign information, making use of documents compare method，the situation of the nitrate pollution in ground water and its preventive measures and control methods were described in this article. There are indications that the nitrate pollution in ground water in European and American is general, laws and regulations are overall and preventive measures before pollution is very important. Nitrate remediation was suited measures to local conditions. Treatment methods commonly available to small areas to reduce nitrate levels, including anion exchange, reverse osmosis and bio-denitrification etc. The stimulation of in situ denitrification in aquifers is another approach to nitrate remediation that has been implemented, particularly in Europe. A second approach to in situ denitrification is the use of permeable reactive subsurface barriers amended with organic carbon solids.