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Accumulation of N and P in the Legume Lespedeza davurica in Controlled Mixtures with the Grass Bothriochloa ischaemum under Varying Water and Fertilization Conditions

文献类型：期刊论文

作者Chen, YL (reprint author), Univ Western Australia, Inst Agr, Sch Agr & Environm, Perth, WA, Australia.; Xu, Bingcheng5,6; Xu, Weizhou5,6; Wang, Zhi5,6; Chen, Zhifei5,6; Palta, Jairo A.3,4; Chen, Yinglong5,6; Xu, BC; Chen, YL (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China.; Chen, YL (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Peoples R China.
刊名FRONTIERS IN PLANT SCIENCE
出版日期2018
卷号9
关键词Intercropping Mixture Proportion Soil Water n: p Ratio p Fertilization
ISSN号1664-462X
DOI10.3389/fpls.2018.00165
文献子类Article
英文摘要Water and fertilizers affect the nitrogen (N) and phosphorus (P) acquisition and allocation among organs in dominant species in natural vegetation on the semiarid Loess Plateau. This study aimed to clarify the N and P accumulation and N: P ratio at organ and plant level of a local legume species mixed with a grass species under varying water and fertilizer supplies, and thus to fully understand the requirements and balance of nutrient elements in response to growth conditions change of native species. The N and P concentration in the organ (leaf, stem, and root) and plant level of Lespedeza davurica (C-3 legume), were examined when intercropped with Bothriochloa ischaemum (C-4 grass). The two species were grown outdoors in pots under 80, 60, and 40% of soil water field capacity (FC), NP, C N, C P, and C NP supply and the grass: legume mixture ratios of 2: 10, 4: 8, 6: 6, 8: 4, 10: 2, and 12: 0. The three set of treatments were under a randomized complete block design. Intercropping with B. ischaemum did not affect N concentrations in leaf, stem and root of L. davurica, but reduced P concentration in each organ under P fertilization. Only leaf N concentration in L. davurica showed decreasing trend as soil water content decreased under all fertilization and mixture proportion treatments. Stems had the lowest, while roots had the highest N and P concentration. As the mixture proportion of L. davurica decreased under P fertilization, P concentration in leaf and root also decreased. The N concentration in L. davurica at the whole plant level was 11.1-17.2%. P fertilization improved P concentration, while decreased N: P ratio in L. davurica. The N: P ratios were less than 14.0 under C P and C NP treatments. Our results implied that exogenous N and P fertilizer application may change the N: P stoichiometry and influence the balance between nutrients and organs of native dominant species in natural grassland, and P element should be paid more attention when considering rehabilitating degraded grassland via fertilization application in semiarid Loess Plateau region.
学科主题Plant Sciences
出版地PO BOX 110, EPFL INNOVATION PARK, BUILDING I, LAUSANNE, 1015, SWITZERLAND
语种英语
WOS记录号WOS:000424894200001
出版者FRONTIERS MEDIA SA
源URL[http://ir.iswc.ac.cn/handle/361005/7842]  
专题水保所科研产出--SCI_2018--SCI
通讯作者Chen, YL (reprint author), Univ Western Australia, Inst Agr, Sch Agr & Environm, Perth, WA, Australia.; Xu, BC; Chen, YL (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China.; Chen, YL (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Peoples R China.; Chen, YL (reprint author), Minist Water Resources, Yangling, Peoples R China.
作者单位1.Minist Water Resources, Yangling, Peoples R China
2.Yulin Univ, Sch Life Sci, Yulin, Peoples R China
3.CSIRO Agr & Food, Wembley, WA, Australia
4.Univ Western Australia, Inst Agr, Sch Agr & Environm, Perth, WA, Australia
5.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Peoples R China
6.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China
推荐引用方式
GB/T 7714		 Chen, YL ,Xu, Bingcheng,Xu, Weizhou,et al. Accumulation of N and P in the Legume Lespedeza davurica in Controlled Mixtures with the Grass Bothriochloa ischaemum under Varying Water and Fertilization Conditions[J]. FRONTIERS IN PLANT SCIENCE,2018,9.
APA Chen, YL .,Xu, Bingcheng.,Xu, Weizhou.,Wang, Zhi.,Chen, Zhifei.,...&Chen, YL .(2018).Accumulation of N and P in the Legume Lespedeza davurica in Controlled Mixtures with the Grass Bothriochloa ischaemum under Varying Water and Fertilization Conditions.FRONTIERS IN PLANT SCIENCE,9.
MLA Chen, YL ,et al."Accumulation of N and P in the Legume Lespedeza davurica in Controlled Mixtures with the Grass Bothriochloa ischaemum under Varying Water and Fertilization Conditions".FRONTIERS IN PLANT SCIENCE 9(2018).

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来源：水土保持研究所

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