Effect of Soil Saline Type and Concentration as well as Soil Water Content on the Growth Characteristics of Switchgrass at the Vegetative Stage on Two Soil Matrixes

doi:10.11733/j.issn.1007-0435.2009.06.012

›› 2009, Vol. 17 ›› Issue (6): 760-766.DOI: 10.11733/j.issn.1007-0435.2009.06.012

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Effect of Soil Saline Type and Concentration as well as Soil Water Content on the Growth Characteristics of Switchgrass at the Vegetative Stage on Two Soil Matrixes

ZUO Hai-tao^1,2, LI Ji-wei³, GUO Bin¹, SONG Shang-you*¹, GAO Wang-sheng⁴

1. Gansu Academy of Agricultural Sciences, Lanzhou, Gansu Province 730070, China;
2. Beijing Research & Development Center for Grass and Environment, Beijing 100097, China;
3. College of Ecology and Environmental Sciences, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia Autonomous Region 010019, China;
4. College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China

Received:2009-10-19 Revised:2009-11-19 Online:2009-12-15 Published:2009-12-15

盐分和土壤含水量对营养生长期柳枝稷的影响

左海涛^1,2, 李继伟³, 郭斌¹, 宋尚有¹, 高旺盛⁴

1. 甘肃省农科院, 甘肃, 兰州, 730070;
2. 北京草业与环境研究发展中心, 北京, 100097;
3. 内蒙古农业大学生态环境学院, 内蒙古, 呼和浩特, 010019;
4. 中国农业大学农学与生物技术学院, 北京, 100193

通讯作者: 宋尚有,E-mail:42135841@sina.com
作者简介:左海涛(1972- ),男,内蒙古包头人,副研究员,博士后,主要从事草本能源植物的栽培技术研究,E-mail: zuohait @126.com
基金资助:
中国博士后科学基金(20070410810);北京市科技计划课题(Y06050600000701)

Abstract

Abstract: In order to provide information on the adaptivity of switchgrass to marginal lands with saline soils,the effect of soil saline type(NaHCO₃,Na₂SO₄,and NaCl),saline concentration(0.2%,0.4%,0.6%,and 0.8%),and soil relative water content(RWC: 80%,60%,and 40%) on the growth characteristics of switchgrass(Panicum virgatum L.cv.Alamo) at the vegetative stage on two soil matrixes(meadow cinnamon soil from Beijing and sierozem soil from Lanzhou) were studied by split-split experimental design using potted culture method under greenhouse conditions.The results show that the growth response of switchgrass to soil salinity was affected by soil saline type,saline concentration,soil water content,and soil type,etc.The adaptability sequences of switchgrass to soil salinity from strong to weak were NaHCO₃>Na₂SO₄>NaCl for the meadow cinnamon soil from Beijing and Na₂SO₄>NaHCO₃>NaCl for the sierozem soil from Lanzhou,respectively.Taking biomass as the evaluation criterion,the favorable soil saline concentrations for switchgrass growth at vegetative stage were NaHCO₃≤0.4%,Na₂SO₄≤0.6%,and NaCl≤0.2%,respectively.

Key words: Switchgrass, Saline type, Saline concentration, Growth characteristics, Soil matrix

摘要： 为了明确柳枝稷对盐渍化边际土地的适应性,采用再裂区试验设计,分别以北京潮褐土和兰州灰钙土为土壤基质,用盆栽土培法研究了土壤盐分类型、盐分浓度和土壤含水量对营养生长期柳枝稷(Panicum virgatum L. cv. Alamo)生长特性的影响.结果表明:柳枝稷生长对于土壤盐渍化的响应方式受盐分类型、盐分浓度、土壤含水量和土壤类型等多种因素影响.对于以北京潮褐土,柳枝稷对不同盐分类型的适应能力由强到弱依次为:重碳酸盐>硫酸盐>氯盐;对于以兰州灰钙土,由强到弱依次为:硫酸盐>重碳酸盐>氯盐.以柳枝稷生物量为衡量指标,各盐分类型的适宜浓度范围分别为重碳酸盐≤0.4%,硫酸盐≤0.6%,氯化盐≤0.2%.

关键词: 柳枝稷, 盐分类型, 盐分浓度, 生长指标, 土壤基质

CLC Number:

ZUO Hai-tao, LI Ji-wei, GUO Bin, SONG Shang-you*, GAO Wang-sheng. Effect of Soil Saline Type and Concentration as well as Soil Water Content on the Growth Characteristics of Switchgrass at the Vegetative Stage on Two Soil Matrixes[J]. , 2009, 17(6): 760-766.

左海涛, 李继伟, 郭斌, 宋尚有, 高旺盛. 盐分和土壤含水量对营养生长期柳枝稷的影响[J]. , 2009, 17(6): 760-766.

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Effect of Soil Saline Type and Concentration as well as Soil Water Content on the Growth Characteristics of Switchgrass at the Vegetative Stage on Two Soil Matrixes

盐分和土壤含水量对营养生长期柳枝稷的影响

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