The grafting and cutting propagation tests of Ulmus pumila cv.
对中华金叶榆进行嫁接和扦插繁殖试验。
2
Ulmus pumila open forest ecosystem plays an important role in Otindag Sandy Land.
榆树疏林生态系统是浑善达克沙地的重要组分之一。
3
Water potential, abscisic acid and chlorophyll were measured from Aprol to November in leaves from proper and heavy load branches of 20-year-old apple (M. pumila Mill.