设为首页  |   加入收藏
引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 157次   下载 103 本文二维码信息
码上扫一扫!
分享到: 微信 更多
土壤粒度和磁化率特征对绰墩古水稻土成因的指示
李学林1, 李福春1, 杨 梅1, 代静玉1, 陈国岩2, 杨用钊3
1.南京农业大学资源与环境科学学院;2.浙江嘉兴平湖市当湖街道办事处;3.淮安市耕地质量保护站
摘要:
本文研究了绰墩农业遗址P-02原状土剖面的粒度分布,定量分析了土壤黏粒的矿物组成,测定了土壤/沉积物及其各粒级组分(黏粒、粉砂粒、细砂粒和粗砂粒)的磁化率。结果表明:在0 ~ 30 cm和134 ~ 154 cm两层段,黏粒含量从下向上有降低的趋势,这可能预示着长期的水耕作业造成黏粒从表层向亚表层移动;在148 ~ 200 cm层段,土壤磁化率从下向上有降低的趋势,可能说明该处存在长期淹水的状况。总之,黏粒含量和质量磁化率数据说明长江下游地区的先民在马家浜文化时期已开始采用“水溽”方式进行水稻的栽培。
关键词:  绰墩  古水稻土  P-02剖面  磁化率  黏粒  水溽
DOI:10.13758/j.cnki.tr.2019.06.025
分类号:S151
基金项目:国家自然科学基金项目(40573057和40571088)和国家自然科学基金重点项目(DO115-40335047)资助。
Significance of Clay Fraction and Magnetic Susceptibility for Origin of Ancient Paddy Soil at Chuodun Agriculture Site
LI Xuelin1, LI Fuchun1, YANG Mei1, DAI Jingyu1, CHEN Guoyan2, YANG Yongzhao3
1.College of Resource and Environmental Science, Nanjing Agricultural University;2.Subdistrict Office of Danghu;3.Farmland Quality Protection Station, Huai’an
Abstract:
Vertical changes of grain fractions, mineral components and magnetic susceptibility along P-02 profile of the ancient soil at Chuodun Agriculture Site were studied. The results indicated that clay content in the profile decreased from 30 to 0 cm and from 154 to 134 cm, possibly implying that long flooding resulted in the removal of clays from the surface to subsurface. The decrease of magnetic susceptibility from 200 to 148 cm indicates that the place was in long-term flooding state. The above results demonstrate that the ancient peoples lived in the lower reaches of the Yangtze River cultivated rice by using “flood management” during Majiabang culture period.
Key words:  Chuodun  Ancient paddy soil  P-02 profile  Magnetic susceptibility  Clay  Flood management

您是第2741274位访问者
版权所有 © 《土壤》编辑部
本系统由北京勤云科技发展有限公司设计   京ICP备09084417号