[1]侯利涵,黄孝风,陈慧晶,等. 水培条件下毛竹幼苗的氮响应研究[J].西北林学院学报,2019,34(6):49-54.[doi:10.3969/j.issn.1001-7461.2019.06.08]
　HOU Li-han,HUANG Xiao-feng,CHEN Hui-jing,et al. Growth Response of Phyllostachys edulis Seedlings to Different Nitrogen Concentrations under Hydroponic Conditions[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2019,34(6):49-54.[doi:10.3969/j.issn.1001-7461.2019.06.08]
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 水培条件下毛竹幼苗的氮响应研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第34卷
期数:
2019年第6期
页码:
49-54
栏目:
出版日期:
2019-11-30

文章信息/Info

Title:
 Growth Response of Phyllostachys edulis Seedlings to Different Nitrogen Concentrations under Hydroponic Conditions
文章编号:
1001-7461(2019)06-0049-06
作者:
 侯利涵1; 黄孝风1; 陈慧晶1; 邹娜1; 2*; 杨清培2
 （1.江西农业大学 园林与艺术学院，江西 南昌 330045；2.江西农业大学 江西省竹子种质资源与利用重点实验室，江西 南昌 330045）
Author(s):
 HOU Li-han1; HUANG Xiao-feng1; CHEN Hui-jing1; ZOU Na1; 2*; YANG Qing-pei2
 (1.College of Landscape and Art，Jiangxi Agricultural University，Nanchang 330045，Jiangxi，China; 2.Jiangxi Provincial Key Laboratory for Bamboo Germplasm Resources and Utilization，Jiangxi Agricultural University，Nanchang 330045，Jiangxi，China)
关键词:
 ; 毛竹; 幼苗; 水培; 铵态氮; 硝态氮
Keywords:
Phyllostachys edulis;  seedling;  hydroponics;  ammonium nitrogen;  nitrate
分类号:
S795
DOI:
10.3969/j.issn.1001-7461.2019.06.08
文献标志码:
A
摘要:
 为进一步了解毛竹幼苗的不同氮响应特征，采用室内可控水培方式，研究毛竹幼苗对不同氮浓度（0.1、8 mmol·L-1）和形态(铵态氮NH4+、硝态氮NO3- )的响应。结果表明，铵态氮处理下的毛竹生物量和体内氮含量等优于等浓度的硝态氮处理，并且不同氮处理下毛竹幼苗各部分干重和氮含量由大到小趋势均为叶>根>茎和叶>茎>根。生物量和根冠比随着N处理浓度的增加而减少，但各部位N含量却随着N浓度的增加而显著增加。毛竹体内N含量与根系构型各指标的相关性分析结果表明，根长、根表面积和根体积是决定毛竹植株根系养分吸收能力的重要因素。但随着NH4+处理浓度的增加，根长、根表面积和根系体积均受到一定程度的抑制，并且低于NO3-处理幼苗根系构型各指标。因此，这些结果表明毛竹生长和N积累表现出铵氮偏好，但浓度过高时对植物生长又表现出抑制效应。
Abstract:
 To further understand the nitrogen response characteristics of bamboo (Phyllostachys edulis) seedlings,indoor nutrient solution hydroponic method was used to study the responses of the seedlings to different nitrogen concentrations (0.1 mmol·L-1,8 mmol·L-1) and forms (NH4+-N,NO3--N).The results showed that under different nitrogen form treatments,the dry weight and nitrogen content of different parts of bamboo seedlings showed a tendency from large to small as leaf>root>stem&leaf>stem>root.Biomass and nitrogen content of ammonium-N treated seedlings were higher than those of nitrate-N treated seedlings with the same nitrogen concentrations.Biomass and root-shoot ratio decreased with the increase of N concentration,but N content of each part increased significantly with the increase of N concentration.With the increase of NH4+concentration,the growths of root length,root surface area and root volume were inhibited,and the root architecture of NO3--N treated seedlings was better than that of NH4+-N treated ones.Correlation analysis between nitrogen content in roots and root architecture showed that root length,root surface area and root volume were important factors in determining the nutrient uptake capacity of roots in bamboo.These results indicated that bamboo growth and N accumulation showed ammonium nitrogen preference.However,when the concentration was too high,it showed an inhibitory effect on plant growth.The research results could provide a theoretical reference for the rational application of N fertilizer in bamboo seedlings.

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备注/Memo

备注/Memo:
 收稿日期：2018-12-24修回日期：2019-04-17
基金项目：江西省研究生创新专项资金项目（YC2018-189）；国家自然科学基金青年科学基金项目（31300521）；江西省自然科学青年基金重点项目(20171ACB21027)。
作者简介：侯利涵，男，硕士在读，研究方向：植物氮营养。E-mail：hlh0075@163.com
*通信作者：邹娜，女，博士，副教授，研究方向：园林植物栽培与氮营养生理。E-mail：nzouyy@126.com
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