中国林副特产Issue(3)：5-7,8,4.
不同氮水平对中美山杨幼苗生物量、氮浓度及其季节变化的影响1）
Effect of Different Nitrogen Supply on Populus davidiana × P . t remuloides Seedling’s Biomass,N Concentration and Their Seasonal Variation
摘要
Abstract
The effects of different nitrogen treatments on the biomass ,nitrogen concentration in roots , stems and leaves of Populus davidiana × P .tremuloides seedlings were studied by sand culture in green-house .The results suggested that N supply could significantly increase the seedlings biomass .The total biomass were highest when 16 mmol/L nitrogen in July and September ,while the maximum of total bio-mass at 8 level in August .The distribution in leaves decreased gradually ,while that of roots increased from July to September .The N concentrations were increased significantly as the N supply levels .The mean N concentrations in roots ,stems and leaves were 1 .16 ,1 .38 and 1 .03 times respectively in the lat-ter growth stage than in the initial stage .The results of this article can provide theory basis and the tech-nical references for the cultivation of Populus davidiana × P .tremuloides seedlings .关键词
中美山杨/氮/生物量分配/季节变化Key words
Populus davidiana× P .tremuloides/Nitrogen/Biomass allocation/Seasonal variation引用本文复制引用
李海霞,周志军,张建瑛,邢亚娟..不同氮水平对中美山杨幼苗生物量、氮浓度及其季节变化的影响1）[J].中国林副特产,2014,(3):5-7,8,4.基金项目
黑龙江省攻关项目（GA09B202-02），黑龙江省森林工业总局青年基金（sgzjQ2011003），农业科技成果转化资金项目（2013GB2B200137），黑龙江省森林工业总局应用项目 （）
