Plough land located at sloping areas is the major part for soil and water loss.

 
  • 坡耕地是水土流失的主體,加快退耕還林步伐和加速坡耕地治理是當務(wù)之急。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan