森林工程2017，Vol.33Issue(2)：1-4,4.
不同形态氮素比例对白桦幼苗生长影响的研究
Effect of Different Nitrogen Form Proportion onthe Growth of Betula Platyphylla Seedling
摘要
Abstract
In order to optimize nitrogen form of Betula platyphylla seedlings during nursery culture,experiments based upon the nine fertilization for different nitrogen form proportions was conducted by taking amide nitrogen (urea) and nitrate(potassium nitrate )as the nitrogen source and the nitrogen form for appropriate growth of birch (Betula platyphylla) was determined.The root-shoot ratio (RSR) of birch seedling with fertilization treatment were significantly lower than that of without fertilization treatment (CK).the height (H) of the seedlings,root-collar diameter (D),and biomass (B) with fertilization treatments were significantly higher than those of without fertilization treatment.No significantly effects of nitrogen form on D and B(P>0.05)were observed.The effects of nitrogen form on H and RSR were significant(P<0.05).H increased with the amide nitrogen proportion increasing.D,B,and RSR presented parabolic changing trend.The amide nitrogen were good for growth stem and leaives of birch seedlings.Nitrate nitrogen was better for growth of root.Because of the advantage of no-hurt to root by container seedling,the optimal nitrogen form was amide nitrogen for nursery culture of container seedling.关键词
白桦/容器苗/酰胺态氮/硝态氮/氮素形态Key words
Betula platyphylla Suk/container seedling/amide nitrogen/nitrate/nitrogen form分类
农业科技引用本文复制引用
马学发,孙志虎,刘彤..不同形态氮素比例对白桦幼苗生长影响的研究[J].森林工程,2017,33(2):1-4,4.基金项目
中央高校基本科研业务费专项资金项目(2572014EB03-03 （）
DL09EA03-2) （）
黑龙江省自然科学基金项目(C201107) （C201107）
"十二五"国家科技支撑计划(2011BAD08B01 （）
2011BAD37B01) （）
国家自然科学基金项目(31470714) （31470714）
