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兰州大学机构库  > 草地农业科技学院  > 期刊论文
题名: Soil Nitrogen, Carbon and Phosphorus after Lucerne Conversion to Wheat or Fallow in the Loess Plateau of China
作者: Yang, HM(杨惠敏); He, SB; Shen, YY(沈禹颖); Wang, XZ
收录类别: SCIE
出版日期: 2011
刊名: PHILIPPINE JOURNAL OF CROP SCIENCE
卷号: 36, 期号:3, 页码:28-33
出版者: CROP SCIENCE SOC PHILLIPPINES
出版地: COLLEGE LAGUNA
英文摘要: The introduction of lucerne (Medicago sativa L.) into the agricultural systems on the Loess Plateau of China has proved to be an excellent way to improve the sustainability of agriculture and environment. Extensive investigation has revealed lucerne's role in affecting soil water status. However, further exploration of the changes in soil nitrogen (N), carbon (C) and phosphorus (P) after lucerne removal is still required. This study investigated the changes of such elements following 4 years of lucerne performance to assess the influence of wheat cultivation or fallow after lucerne removal on soil fertility, compared with continuous lucerne. Soil mineral N, organic C, and available P were sensitive to cultivation techniques and years, while soil total N and total P were different between two soil layers. Soil mineral N and available P tended to fluctuate with years under continuous lucerne, while soil organic C increased with years in the shallower soils but decreased in the deeper soils. The operation of fallow after lucerne removal led to soil nitrate N and available P accumulation due to the lack of plant utilisation of nutrients potentially resulting in soil N and P leaching. Wheat cultivation after lucerne removal led to the depletion of soil mineral N in both soil layers. Although there was no consistent change, the results indicated that soil fertility can be enhanced within 4 years of lucerne performance, and the efficiency of nutrient utilisation may be promoted under wheat cultivation after lucerne removal.
关键词: continuous lucerne ; cultivation technique ; lucerne-fallow ; lucerne-wheat ; soil fertility ; soil quality
作者部门: [Yang, Huimin ; He, Shubin ; Shen, Yuying ; Wang, Xianzhi] Lanzhou Univ, State Key Lab Grassland Agroecosyst, Coll Pastoral Agr Sci & Technol, Lanzhou 730020, Peoples R China
通讯作者: Shen, YY (reprint author), Lanzhou Univ, State Key Lab Grassland Agroecosyst, Coll Pastoral Agr Sci & Technol, 768 Jiayuguan W Rd, Lanzhou 730020, Peoples R China.
学科分类: Agriculture
文章类型: Article
所属项目编号: National Natural Science Foundation of China [31172248] ; 973 Programme of China [2007CB106804] ; ACIAR from Australia [LWR/2007/191]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划) ; 澳大利亚国际农业研究中心项目
项目资助者: NSFC ; MOST ; ACIAR
语种: 英语
ISSN号: 0115-463X
WOS记录号: WOS:000298513900005
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/113661
Appears in Collections:草地农业科技学院_期刊论文

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Recommended Citation:
Yang, HM,He, SB,Shen, YY,et al. Soil Nitrogen, Carbon and Phosphorus after Lucerne Conversion to Wheat or Fallow in the Loess Plateau of China[J]. PHILIPPINE JOURNAL OF CROP SCIENCE,2011,36(3):28-33.
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