[1]吴殿鸣,薛建辉*,罗 英,等.杨麦间作系统硝态氮淋失的原位研究[J].南京林业大学学报(自然科学版),2012,36(02):111-116.[doi:10.3969/j.jssn.1000-2006.2012.02.023]
 WU Dianming,XUE Jianhui*,LUO Ying,et al.Study on nitrate nitrogen leaching in poplar-wheat intercropping ecosystem by in situ analysis[J].Journal of Nanjing Forestry University(Natural Science Edition),2012,36(02):111-116.[doi:10.3969/j.jssn.1000-2006.2012.02.023]
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杨麦间作系统硝态氮淋失的原位研究
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
36
期数:
2012年02期
页码:
111-116
栏目:
城镇绿地特殊生境生态修复关键技术研究专栏
出版日期:
2012-04-10

文章信息/Info

Title:
Study on nitrate nitrogen leaching in poplar-wheat intercropping ecosystem by in situ analysis
作者:
吴殿鸣薛建辉*罗 英侍 昊
南京林业大学森林资源与环境学院,江苏省林业生态工程重点实验室,江苏 南京 210037
Author(s):
WU Dianming XUE Jianhui* LUO Ying SHI Hao
Jiangsu Key Laboratory of Forestry Ecological Engineering, College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
关键词:
杨麦间作系统 硝态氮淋溶 林分密度
Keywords:
poplar-wheat intercropping ecosystem nitrate leaching stand density
分类号:
S718
DOI:
10.3969/j.jssn.1000-2006.2012.02.023
文献标志码:
A
摘要:
利用田间原位淋溶装置研究了杨麦间作系统中林分密度和施氮量对小麦田土壤60 cm深处硝态氮淋失浓度和淋失量及0~80 cm土层硝态氮分布特征的影响。施氮量设不施氮(N0,0 kg/hm2)、常规施氮(N140,140 kg/hm2)、减量施氮(N70,70 kg/hm2)、增量施氮(N210,210 kg/hm2)4个处理。结果表明:对照地淋溶水量与降水呈显著正相关关系; 杨麦间作系统能显著减少淋溶水量。土壤硝态氮淋溶量随施氮量的增加而上升,对照地60 cm处N210处理下硝态氮淋溶量最大,为13.89 kg/hm2。杨麦间作系统L1(2 m×5 m)小区距树0.5 m处淋溶量比对照麦地减少了60.27%; 相同处理距树1.5 m处比对照地减少了50.11%,不同林分硝态氮淋失量不同,但差异不明显。分析认为,杨麦间作系统能有效减少硝态氮在土壤中的淋溶和累积,且存在明显的空间变异性。
Abstract:
By using in situ leaching device, a field experiment was conducted to study the nitrate leaching amount and density at 60 cm soil depth, nitrate accumulation in soil profile(0-80 cm)of poplar-wheat intercropping ecosystem. Four treatments were installed, no fertilization(N0,0 kg/hm2),conventional fertilization(N140,140 kg/hm2),reduced N application(N70,70 kg/hm2),increased N application(N210,210 kg/hm2). The results indicated a positive correlation between quantity of leachate water and precipitation, the poplar-wheat intercropping ecosystem can reduce the quantity of eluviate solution. The nitrate leaching loss increased according to the increasing N fertilization rate. In treatment spot N210, the nitrate nitrogen loss from N fertilization at 60 cm soil depth was the greatest(13.89 kg/hm2), it declined by 60.27% and 50.11% in poplar-wheat intercropping ecosystem away from the poplar row 0.5 m and 1.5 m, respectly. The nitrogen leaching and accumulation were significantly lower in poplar-wheat intercropping ecosystem, and variances of the distribution for soil nitrate nitrogen were significant.

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备注/Memo

备注/Memo:
收稿日期:2011-12-06 修回日期:2012-01-09 基金项目:“十一五”国家科技支撑计划(2008BAJ10B04) 第一作者:吴殿鸣,博士生。*通信作者:薛建辉,教授。E-mail:jhxue@njfu.com.cn。引文格式:吴殿鸣,薛建辉,罗英,等. 杨麦间作系统硝态氮淋失的原位研究[J]. 南京林业大学学报:自然科学版,2012,36(2):111-116.
更新日期/Last Update: 2012-04-10