YANG Haijiang,WANG Jianyu,PAN Jiaying.Evolution of Sands Selenium Content of Two Types of Gravel-mulch Land[J].Northern Horticulture,2016,40(20):167-171.[doi:10.11937/bfyy.201620044]
两种土壤类型压砂地硒含量的演变
- Title:
- Evolution of Sands Selenium Content of Two Types of Gravel-mulch Land
- Keywords:
- gravel-mulch land; selenium; variation
- 文献标志码:
- A
- 摘要:
- 对宁夏中卫市香山乡红圈子村和海原县关桥乡罗山村连作1、3、5、7、10、20、30年不同土壤类型的压砂地硒和理化性质数据进行单因素方差分析、Pearson相关分析以及回归分析，以探明不同砂田的土壤类型中硒含量的状况、不同压砂年限硒含量的变化规律、不同深度硒含量的变化规律，并对压砂地硒与土壤理化性质的相关性进行分析,为提高宁夏中部干旱带砂田的可持续利用提供依据。结果表明：砂田土壤中硒含量与土壤粘粒含量有着密切的关系，呈显著的正相关关系。随连作年限的增加，两地砂田土壤中硒含量总体上呈下降趋势，压砂10年状况为最差。两地压砂地随土层深度的增加硒含量呈逐渐上升趋势。两地砂田硒与土壤有机质表现出极显著正相关。因此，在砂田耕作的过程中必须进行科学的施肥与合理的耕作，对生产益于人体健康适当硒含量的硒砂瓜具有重要意义。
- Abstract:
- In order to improve the sustainable use of gravel-sand mulched fields in the arid area in central Ningxia，the soil selenium and soil physiochemical properties of continuous (1 a,3 a,5 a,7 a,10 a,20 a,30 a) in Hongjuanzi village,Zhongwei city and Luoshan village,Haiyuan county of Ningxia Hui Autonomous Region.The resulting data was analyzed by the methods of One-way ANOVA and Pearson correlation analysis and principal component analysis the status selenium content of soil types in different sands，the variation of different pressure sand years selenium content，different variation of the depth of the content of selenium，and pressure sand correlation between selenium and soil physical and chemical characteristics.The results showed that the sand field soil content of selenium in the soil clay content was closely related，showed a significant positive correlation.Even with increased cropping year，the selenium content was generally two sandy field soil decreased，pressure sand 10 a situation was the worst.Two pressure sand gradually increased with soil depth increas.Both selenium sands and soil organic matter showed a significant positive correlation.Therefore，in the sand field cultivation process should be scientific and rational fertilization of farming，thereby maintaining pressure sand excellent characteristics and produce beneficial to human body health appropriate selenium content in selenium sand melon was of great significance.
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备注/Memo
第一作者简介：杨海江（1991-），男，陕西靖边人，硕士研究生，研究方向为自然地理。E-mail:986052313@qq.com.责任作者：王建宇（1970-），女，硕士，研究员，现主要从事干旱区特色产业发展与生态关系等研究工作。E-mail:w305y517@nxu.edu.基金项目：国家自然科学基金资助项目（41161085）。