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| 轮作对设施蔬菜大棚中次生盐渍化土壤盐分离子累积的影响 | |
| 引用本文： | 施毅超,胡正义,龙为国,夏旭,朱春游,巴玉鑫,赵言文.轮作对设施蔬菜大棚中次生盐渍化土壤盐分离子累积的影响[J].中国生态农业学报,2011,19(3):548-553. |
| 作者姓名： | 施毅超 胡正义 龙为国 夏旭 朱春游 巴玉鑫 赵言文 |
| 作者单位： | 1. 中国科学院研究生院资源与环境学院,北京,100049 2. 中国科学院研究生院资源与环境学院,北京,100049;中国科学院南京土壤研究所,南京,210008 3. 南京农业大学资源与环境学院,南京,210095 4. 中国科学院南京土壤研究所,南京,210008 |
| 基金项目： | 中国科学院知识创新工程项目(KSCX2-YW-N-038)资助 |
| 摘 要： | 2007 年8 月在江苏省宜兴市采集10 个典型大棚土壤及其邻近露地蔬菜地土壤调查其离子组成和电导率, 并选择2 个土壤具有次生盐渍化特征的大棚研究轮作(蓖麻-白菜-蓖麻、辣椒-白菜-辣椒)对土壤电导率(EC)和离子组成的影响。结果表明, 大棚蔬菜地土壤EC 显著高于露地蔬菜地土壤, 20%的大棚土壤已发生次生盐渍化(EC>500 μS·cm-1); 大棚土壤的SO42-、NO3-离子浓度显著高于露地蔬菜土壤, 说明SO42-、NO3-是影响大棚次生盐渍化的主要离子。2 年3 茬大棚蔬菜地轮作试验结果表明, 蓖麻-白菜-蓖麻轮作导致土壤EC 下降5%, 辣椒-白菜-辣椒轮作使土壤EC 下降33%, 表明后者对土壤次生盐渍化改良效果优于前者。两轮作系统盐分离子累积差异主要在于SO42-, 辣椒-白菜-辣椒轮作能降低土壤SO42-的累积, 而蓖麻-白菜-蓖麻轮作则不然。建议根据次生盐渍化土壤主控盐分离子以及不同作物对盐分离子吸收累积偏向性选择合适的轮作系统, 实现轮作改良次生盐渍化最佳效果。 |
| 关 键 词： | 轮作 次生盐渍化 设施土壤 盐分离子 土壤电导率 |
| 收稿时间： | 9/9/2010 12:00:00 AM |
| 修稿时间： | 2011/1/19 0:00:00 |
Effect of crop rotation on ion accumulation in secondary salinization soil of vegetable field in greenhouse |
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| SHI Yi-Chao,HU Zheng-Yi,LONG Wei-Guo,XIA Xu,ZHU Chun-You,BA Yu-Xin and ZHAO Yan-Wen.Effect of crop rotation on ion accumulation in secondary salinization soil of vegetable field in greenhouse[J].Chinese Journal of Eco-Agriculture,2011,19(3):548-553. | |
| Authors: | SHI Yi-Chao HU Zheng-Yi LONG Wei-Guo XIA Xu ZHU Chun-You BA Yu-Xin and ZHAO Yan-Wen |
| Institution: | College of Resources and Environment, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;College of Resources and Environment, Graduate University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;College of Resources and Environment, Nanjing Agricultural University, Nanjing 210095, China;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;College of Resources and Environment, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;College of Resources and Environment, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;College of Resources and Environment, Nanjing Agricultural University, Nanjing 210095, China |
| Abstract: | Soil samples from ten plastic greenhouse vegetable fields(PGVF) and another ten soil samples from open vegetable fields(OVF) were collected in Aug.2007 in Yixing City,Jiangsu Province.The soils were analyzed and compared for soil ion accumulation and soil electrical conductivity(EC).Two PGVFs with secondary salinization soil were selected to compare two crop rotation systems(CCC: castor-Chinese cabbage-castor;PCP: pepper-Chinese cabbage-pepper) for EC and ion accumulation.The study showed higher soil EC und... |
| Keywords: | Crop rotation Secondary salinization Plastic greenhouse soil Salt ion Soil electrical conductivity |
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