南京林业大学学报（自然科学版）Issue(1)：53-58,6.DOI:10.3969/j.issn.1000-2006.2014.01.010
两种氮肥施用法对尾巨桉轻基质容器苗生长的影响
Effects of two nitrogen application methods on growth of Eucalyptus urophylla×E.grandis container seedlings cultivated with light media
摘要
Abstract
The effects of nitrogen treatments with the exponential fertilization, mean fertilization and non-fertilization on the growth and chlorophyll contents of Eucalyptus urophylla×E.grandis clone DH32-29 tissue culture seedlings in container with light media were studied during a three-month period. The results suggested that N supply could significantly in-crease the growth and chlorophyll contents of seedlings (p<0.05).The increase of height from the exponential fertilization was faster than that from mean fertilization at the late stage of experiment. When N supply were 20 and 40 mg per seed-ling, the growth indices of seedlings from the exponential fertilization were significantly higher than those from mean fer-tilization in the same N concentration, and when N supply were 20 and 60 mg per seedling, the chlorophyll contents of seedlings from exponential fertilization were significantly higher than those from mean fertilization in the same N concen-tration, but the other N concentrations had no obvious differences. The ground diameter, root volume, leaf area, leaf length, leaf width and chlorophyll contents of seedlings from the exponential fertilization with 60 mg N per seedling were significantly higher than other treatments, their growth vigor was the best among all treatments, so the exponential fertili-zation was the best treatment in this experiment. We concluded that the effect of exponential fertilization was superior to that of the mean fertilization both in growth and chlorophyll contents of E.urophylla × E.grandis seedlings.关键词
尾巨桉容器苗/轻基质/指数施肥/平均施肥/氮肥Key words
Eucalyptus urophylla×E.grandis container seedling/light media/exponential fertilization/mean fertiliza-tion/nitrogen fertilization分类
农业科技引用本文复制引用
张华林,彭彦,谢耀坚,罗萍..两种氮肥施用法对尾巨桉轻基质容器苗生长的影响[J].南京林业大学学报（自然科学版）,2014,(1):53-58,6.基金项目
国家林业公益性行业科研专项项目（201104003）；国家林业局林业科技成果推广项目 （）
