种植黑果枸杞（Lycium ruthenicum）对盐渍土盐分分布的影响

彭 飞1; 黄翠华1; 尤全刚1; 高天鹏2

doi:10.7522/j.issn.1000-694X.2013.00206

中国沙漠 >

2013 , Vol. 33 >Issue 5: 1406 - 1412

DOI: https://doi.org/10.7522/j.issn.1000-694X.2013.00206

生物与土壤

种植黑果枸杞（Lycium ruthenicum）对盐渍土盐分分布的影响

彭飞1 ,
黄翠华1 ,
尤全刚1 ,
高天鹏2

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1.中国科学院寒区旱区环境与工程研究所沙漠与沙漠化重点实验室, 甘肃兰州 730000;
2.兰州城市学院城市生态与环境生物技术中心, 甘肃兰州 730070

收稿日期: 2012-06-29

修回日期: 2012-10-22

网络出版日期: 2012-10-22

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Effects of Plantation of Lycium ruthenicum on the Soil Salt Distribution in the Minqin Basin

PENG Fei1 ,
HUANG Cui-hua1 ,
YOU Quan-gang1 ,
GAO Tian-peng2

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1.Key Laboratory of Desert and Desertification, Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
2.Center of Urban Ecology and Environmental Biotechnology, Lanzhou City University, Lanzhou 730070, China

Received date: 2012-06-29

Revised date: 2012-10-22

Online published: 2012-10-22

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摘要

针对近年来民勤绿洲土壤盐渍化发展现状,通过田间试验初步研究了黑果枸杞（Lycium ruthenicum）在盐渍化土壤改良中的作用。本试验开始前,试验地已经过两年的咸水灌溉,灌溉水盐分浓度分别为0.8 g·L-1（低盐）、2 g·L-1（中盐）和5 g·L-1（高盐）。在试验地移植黑果枸杞后连续两年监测土壤盐分在垂直和水平方向的分布。结果表明:（1）移植黑果枸杞后土壤电导率有明显的季节变化规律。这种季节变化受降水和参考作物蒸散量的影响;（2）种植黑果枸杞后土壤盐分向根际和冠幅下运移导致根际和冠幅下土壤盐分含量升高;（3）种植黑果枸杞可以降低冠幅外土壤盐分浓度。种植前灌溉水的盐分含量越低,黑果枸杞使土壤盐分向冠幅下运移的幅度越大。

关键词： 黑果枸杞（Lycium ruthenicum）; 土壤电导率; 民勤; 土壤盐分; 盐渍土

本文引用格式

彭飞1 , 黄翠华1 , 尤全刚1 , 高天鹏2 . 种植黑果枸杞（Lycium ruthenicum）对盐渍土盐分分布的影响[J]. 中国沙漠, 2013 , 33(5) : 1406 -1412 . DOI: 10.7522/j.issn.1000-694X.2013.00206

Abstract

Soil salinization, one kind of land degradation in the Minqin basin, expanded rapidly recently. Random block experiment was employed to investigate the effects of the plantation of Lycium ruthenicum on horizontal and vertical distribution of soil salt. The experimental site were irrigated by 0.8 g·L-1, 2 g·L-1, 5 g·L-1 saline water two years precedent to the plantation of L. ruthenicum. The results showed that horizontal soil salt was significantly influenced by the concentration of irrigation water and soil depth. Mean soil electrical conductivity of 0-100 cm was in the consequence of the pre-treatment of 5 g·L-1>2 g·L-1>0.8 g·L-1 saline water. Two year plantation of L. ruthenicum increased the soil salt content under the canopy but decreased that in the interspace soil. The soil salt content at the 0-100 cm layers varied seasonally, which was positively related to the rainfall and the reference evapotranspiration ratio.

Key words： Lycium ruthenicum; soil electrical conductivity; Minqin oasis; soil salt; saline soil

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