ulmus pumila造句

• Seed zones of chinese forest trees - seed zones of ulmus pumila l
  中国林木种子区白榆种子区
• Response to light of ulmus pumila in different soil moisture
  不同土壤水分条件下白榆的光响应研究
• Genetic relationship between parents and hybrid progenies of populus alba l . 215 ; ulmus pumila l . using aflp marker
  标记研究银白杨215 ;白榆的亲子关系
• Species diversity and arbor population distribution pattern of ulmus pumila l scattered grassland of horqin sand
  科尔沁沙地榆树疏林草地物种多样性及乔木种群空间格局
• This paper investigated the fungus flora of 8 main tree species , which are pinus tabulaeformis , larix principis - rupprechtii mayr , betula platyphylla suk , ostryopsis davidiana decne , ulmus pumila l . , quercus liaotungensis koidz , populus davidiana dode , prunus ansu , in daqingshan mountain
  大青山地区环境恶劣、植被破坏严重，利用菌根生物技术实现植被恢复是一个重要方向。本文对大青山8个主要树种，即：油松、落叶松、白桦、虎榛子、榆树、辽东栎、山杏菌根资源及生态进行了调查。