This paper discusses the optimal model of water and soil conservation countermeasures such as contour ridge culture,level ditch plant girldle and ridge culture area,and makes test study at test base.

 
  • 探讨黑土坡耕地水土保持措施的优化模式,主要采取了等高垄作,水平沟埂植物带和垄作区田等水土保持措施,并在试验基地进行了试验研究。
今日热词
目录 附录 查词历史