草地学报

›› 2007, Vol. 15 ›› Issue (6): 604-608.DOI: 10.11733/j.issn.1007-0435.2007.06.018

• 研究论文 • 上一篇    下一篇

土壤盐分和浓度对苜蓿建植初期的耦合效应

张芮1, 成自勇1, 宋淑珍2, 丁林1, 黄彩霞1   

  1. 1. 甘肃农业大学工学院, 兰州, 730070;
    2. 甘肃省农业工程咨询设计所, 兰州, 730000
  • 收稿日期:2007-01-30 修回日期:2007-09-19 出版日期:2007-12-15 发布日期:2007-12-15
  • 通讯作者: 成自勇
  • 作者简介:张芮(1980- ),男,甘肃武威人,教师,硕士,主要从事水利工程与生态、节水灌溉研究,Email:zhr_1029@163.com
  • 基金资助:
    国家高科技研究发展计划(863计划)(2002AA2Z4191)

Coupling Effects of the Soil Salinity Type and Concentration on the Growth of Alfalfa during its Initial Establishment Stage

ZHANG Rui1, CHENG Zi-yong1, SONG Shu-zhen2, DING Lin1, HUANG Cai-xia1   

  1. 1. School of Engineering, Gansu Agricultural University, Lanzhou, Gansu Province 730070, China;
    2. Gansu Institute of Agricultural Engineering Consultation and Design, Lanzhou, Gansu Province 730000, China
  • Received:2007-01-30 Revised:2007-09-19 Online:2007-12-15 Published:2007-12-15

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摘要： 研究盐碱土和人工盐碱土栽培苜蓿(Medicago sativa L.),结果表明:盐分类型和浓度对苜蓿建植初期产草量有明显的影响,据此建立苜蓿减产率与土壤盐分离子浓度的多元线形模型;土壤Na+和Ca2+对苜蓿生长有极显著(P<0.01)的抑制作用,K+则有明显的促进作用;而HCO3-、SO42-、Cl-、Mg2+对苜蓿生长无明显影响。

关键词: 土壤盐分, 苜蓿, 产草量

Abstract: The experiment was conducted to compare the growth of alfalfa in natural saline soil and artificially made saline soil.The results show that the salinity types and concentrations in soils had a significant impact on alfalfa’s yield during its initial stage of establishment.The relationship between reduction rate of alfalfa yield and salt concentration of the soil could be described by multiple linear model.Na+ and Ca2+ in the soils had significantly inhabitation on the growth of alfalfa;K+ played a significant role in promoting the growth of alfalfa;HCO3-,SO42-,Cl-,and Mg2+had no significant influence on alfalfa growth.

Key words: Soil salinity, Alfalfa, Yield

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