三种草坪草的根系分布特征及其对土壤养分的影响

草业学报 ›› 2009, Vol. 18 ›› Issue (1): 179-183.

三种草坪草的根系分布特征及其对土壤养分的影响

成文竞^1,2,4,崔建宇³,闵凡华³,胡林^3*

1.中国科学院植物研究所植被与环境变化国家重点实验室,北京100093;
2.中国科学院研究生院,北京100049;
3.中国农业大学资源与环境学院,北京100193;
4.上海农林职业技术学院园艺园林系,上海201600

收稿日期:2008-02-19 出版日期:2009-01-25 发布日期:2009-02-20
作者简介:成文竞(1983-),男,湖南宁乡人,助教,硕士。E-mail: cheng_wenjing@126.com
基金资助:
国家“十一五”科技支撑项目(2006BAD16B09)和中美合作“中国草坪品种区域生态试验”项目资助。

Root distribution characteristics of three turfgrasses and their impact on soil nutrient content

CHENG Wen-jing^1,2,4, CUI Jian-yu³, MIN Fan-hua³, HU Lin³

1.Key State Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;
2.Graduate School of Chinese Academy of Sciences, Beijing 100049, China;
3.College of Resources and Environmental Science, China Agricultural University,
Beijing 100193, China;
4.Department of Horticulture and Gardening, Shanghai
Vocational and Technical College of Agriculture and Forestry,
Shanghai 201600, China

Received:2008-02-19 Online:2009-01-25 Published:2009-02-20

摘要/Abstract

摘要： 对高羊茅、多年生黑麦草和草地早熟禾的成熟草坪进行了根系和土壤取样测定。结果表明,高羊茅根系分布最深,达1.8m,其根系生物量分别是多年生黑麦草和草地早熟禾的3.1和3.0倍。草坪草根系分布特征对土壤剖面养分含量有显著影响。草种间土壤硝态氮含量在0~40cm差异不显著,而在40~100cm差异显著,草地早熟禾>多年生黑麦草>高羊茅。土壤有效磷含量随深度增加而骤减,0~60cm草种间差异显著,草地早熟禾>多年生黑麦草>高羊茅。土壤速效钾含量在0~20cm最高,20~100cm随土壤深度增加变化不明显。

Abstract: Root and soil samples were collected from mature Festuca arundinacea, Lolium perenne and Poa pratensis. The root depth of F. arundinacea had reached 1.8 m, and the root biomass of F. arundinacea was 3.1 and 3.0 times the weight of L. perenne and P. pratensis respectively. There were significant influences of root distribution characteristics of turfgrasses on soil nutrient content. The differences in soil nitrate between turfgrasses were not significant in the 0-40 cm layer, but were significant in the 40-100 cm layer, with a ranking of P. pratensis＞L. perenne＞F. arundinacea. Soil available P decreased greatly as soil depth increased, and the differences between turfgrasses were significant in the 0-60 cm layer with rankings of P. pratensis＞L. perenne＞F. arundinacea. Soil available K was highest at 0-20 cm and showed no decrease in the 20-100 cm layer.

中图分类号:

成文竞,崔建宇,闵凡华,胡林. 三种草坪草的根系分布特征及其对土壤养分的影响[J]. 草业学报, 2009, 18(1): 179-183.

CHENG Wen-jing, CUI Jian-yu, MIN Fan-hua, HU Lin. Root distribution characteristics of three turfgrasses and their impact on soil nutrient content[J]. Acta Prataculturae Sinica, 2009, 18(1): 179-183.

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