Nitrogen Losses in Paddy Field Drainage Modifiedby Different Water Level Regulations

  title={Nitrogen Losses in Paddy Field Drainage Modifiedby Different Water Level Regulations},
  author={Shizong Zheng and Meng-hua Xiao and Zi-mei Miao},
  journal={Polish Journal of Environmental Studies},
Nitrogen losses from farmland, through improper drainage and rainstorm runoff, cause non-point source pollution and limit sustainable agriculture development. We determined the effects of controlled drainage (CTD) and conventional drainage (CVD) on migration responses, the transformation of nitrogen, and NH4 +-N and NO3 --N losses. The results showed that four days after a rainstorm, compared with day one, NH4 +-N and NO3 --N decreased by ranges of 28.7-46.7% and 7.5-47.5% in CTD, which was… 
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