| 不同复合种植模式对土壤可蚀性K值与侵蚀量的影响研究 |
| |
| 引用本文： | 陶俊,何丙辉,徐小军,李建兴,孙文艳.不同复合种植模式对土壤可蚀性K值与侵蚀量的影响研究[J].水土保持通报,2013,33(3):38-43. |
| |
| 作者姓名： | 陶俊 何丙辉 徐小军 李建兴 孙文艳 |
| |
| 作者单位： | 1. 西南大学资源环境学院三峡库区生态环境教育部重点实验室,重庆,400715
2. 西北农林科技大学资源环境学院,陕西杨凌,712100 |
| |
| 基金项目： | 国家自然科学基金项目"植物篱配置模式对三峡库区面源污染控制机理研究"，国家科技支撑计划项目"坡地埂—路—沟—池工程配套技术集成规范" |
| |
| 摘 要： | 采用野外调查与室内分析相结合的方法,把4种农作物引入复合种植模式中,以土壤可蚀性K值、径流量、侵蚀量为指标,对紫色土区不同复合种植模式与水土流失特征的关系进行分析和研究.研究结果表明:(1)与单一的种植模式相比,不同复合种植模式使水土流失敏感性增强,K值增大,土壤容易被侵蚀.(2)土壤可蚀性K值与土壤砂粒含量呈极显著负相关,相关系数为-0.957；与土壤黏粒含量、有机C含量呈负相关,相关系数分别为-0.191,-0.637;与粉粒含量呈显著的正相关,相关系数为0.986.黏粒及有机质含量的高低是反映紫色土区土壤抗侵蚀能力强弱的有效指标.(3)与柚子纯林种植模式相比,复合种植模式的径流截留效益显著.综合各项指标发现,柚子—粉葛复合模式抗侵蚀效果最好,最适宜推广种植.
|
| 关 键 词： | 紫色土区 复合种植模式 K值 径流量 侵蚀量 |
| 收稿时间： | 2012/5/19 0:00:00 |
| 修稿时间： | 9/5/2012 12:00:00 AM |
Effects of Different Types of Multiple Cropping on Soil Erodibility and Erosion Amount |
| |
| TAO Jun,HE Bing-hui,XU Xiao-jun,LI Jian-xing and SUN Wen-yan.Effects of Different Types of Multiple Cropping on Soil Erodibility and Erosion Amount[J].Bulletin of Soil and Water Conservation,2013,33(3):38-43. |
| |
| Authors: | TAO Jun HE Bing-hui XU Xiao-jun LI Jian-xing and SUN Wen-yan |
| |
| Institution: | Key Laboratory of Eco-environment in the Three Gorges Reservoir Region of the Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;Key Laboratory of Eco-environment in the Three Gorges Reservoir Region of the Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;Key Laboratory of Eco-environment in the Three Gorges Reservoir Region of the Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;Key Laboratory of Eco-environment in the Three Gorges Reservoir Region of the Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China |
| |
| Abstract: | In combination of field investigation with laboratory analysis,the relationships between multiple cropping and soil and water loss in the purple soil region were analyzed using soil erodibility Kvalue,runoff and erosion amount as indicators.Results showed that:(1)In contrast to single cropping pattern,the different cropping modes enhanced the sensitivity to soil and water loss,increased soil erodibility Kvalue and made soil to be eroded more easily.(2)The K value had a significantly negative correlation with sand content,with a correlation coefficient of-0.957.It was negatively correlated with clay content and organic C content,with correlation coefficients of-0.191and-0.637,respectively.The Kvalue had a significant positive correlation with silt content,with a correlation coefficient of 0.986.The levels of organic matter content and clay content were the sound indexes reflecting the resistance to erosion for purple soil.(3)Compared with the grapefruit pure cropping pattern,the runoff interception efficiency by multiple cropping was significant.The multiple cropping pattern of grapefruit and Pachyrhizua angulatus has the best effect in controlling soil erosion and thus is most suitable for application. |
| |
| Keywords: | purple soil region multiple cropping K value runoff erosion amount |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《水土保持通报》浏览原始摘要信息 |
| 点击此处可从《水土保持通报》下载免费的PDF全文 |
|
