学术
5种阔叶树幼苗的养分积累和分配规律
梁瑞友[1] 许松葵[2] 梁丽丽[3] 任向荣[3] 曹鹤[3]
[1]国营小坑林场,曲江512162 [2]广东省林业局,曲江512162 [3]华南农业大学林学院,曲江512162
摘 要:
研究了观光木（Tsoongiodendron odorum）、女贞（Ligustrum lucidum）、山杜英（Elaeocarpus sylvestris）、乳源木莲（Manglietia yuyuanensis）和乐昌含笑（Michelia chapensis）幼苗的养分积累和分布.结果表明： 观光木各器官干重为根＞叶＞干,女贞为干＞根＞叶＞枝,山杜英为枝＞叶＞根＞干,乳源木莲为根＞干＞叶,乐昌含笑为叶＞干＞根＞枝.各树种干的养分浓度最低.除了观光木外,其余树种均以叶的养分浓度为最高.观光木的养分贮量为根＞叶＞干,女贞和山杜英为叶＞枝＞根＞干,乳源木莲为叶=干＞根,乐昌含笑为叶＞干=根＞枝.5种幼苗各器官的养分贮量多为N＞ K＞P.[著者文摘]
文章出处:
《广东林业科技》-2007年23卷2期,36 -16-19,36页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1006-4427（2007）02-0016-05
Accumulation and Distribution of Nutrients in Seedlings of Five Broad-leaved Tree Species
Liang Ruiyou, Xu Songkui, Liang Lili, Ren Xiangrong, Cao He （1. Xiaokeng Forest Farm, Qujiang, 512162; 2. Guangdong Forestry Bureau; 3. College of Forestry, South China Agricultural University）
Abstract:
The paper analyzed accumulation and distribution of nutrients in seedlings of broad-leaved Tsoongiodendron odorum, Ligustrum lucidum, Elaeocarpus sylvestris, Manglietia yuyuanensis and Michelia chapensis tree species. The order of dry weight in various organs was roots 〉 leaves 〉 stem for T. odorum, stem 〉 roots 〉 leaves 〉 branches for L. lucidum, branches 〉 leaves 〉 roots 〉 stem for E, sylvestris, roots 〉 stem 〉 leaves for M. yuyuanensis and leaves 〉 stem 〉 roots 〉 branches for M. chapensis. Nutrient concentrations were the lowest in stem and the highest in leaves except for T, odorum. Generally, the order of nutrient concentrations was N 〉 K 〉 P. The order of total amount of nutrients in various organs was roots 〉 leaves 〉 stem for T, odorum, leaves 〉 branches 〉 roots 〉 stem for L. lucidum and E. sylvestris, leaves and stem 〉 roots for M. yuyuanensis, and leaves 〉 stem and roots 〉 branches for M. chapensis. The amount of nutrients in the five seedlings was generally ranked in turn N 〉 K 〉P.[著者文摘]
Key words:
broad-leaved seedling, dry weight, nutrient concentration, nutrient accumulation
基金资助:
广东省生态公益林管理中心资助项目（4400-F02084,4400-F05004）.
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