摘要
为研究辽宁地区植稻土壤在中国土壤系统分类中的归属,选取辽宁地区7个典型植稻土壤剖面,在对其成土环境、剖面形态特征调查、描述和理化性质的分析基础上,以中国土壤系统分类方案为指南,检索其诊断层及诊断特性,确定其在中国土壤系统分类中的归属。研究结果表明:有4个土壤满足水耕表层、水耕氧化还原层的要求,可以划归为人为土土纲,其它3个土壤只满足水耕现象和水耕氧化还原现象,只能划为雏形土土纲。所以,并非像土壤发生分类学结果那样将所有植稻土壤都划分为水稻土。研究进一步发现,供试剖面中划分为冷凉湿润雏形土、简育湿润雏形土亚类的3个土壤剖面具有水耕现象,但在其亚类检索中缺乏相应的亚类。为此,本文建议在这两个土类中分别增加具有水耕现象的亚类。
In order to determine categories in Chinese Soil Taxonomy(CST)for paddy soil in Liaoning Province,7 typical profiles of paddy soil were investigated in this study.On the basis of investigation and description of soil-forming environment morphological characteristics,and soil,physical and chemical characteristics,the diagnostic horizons and diagnostic characteristics of the soils and the classes in CST were determined following the Keys to Chinese Soil Taxonomy(3rd edition).Results showed that 4 soils among 7 typical profiles of paddy soils tested had Anthrostagnic epipedon and Hydragric horizon and can be divided into Anthrosols.Another 3 soils only showed Anthrostagnic evidence and Hydragric evidence,and can be classified into Cambosols.This meaned that not all of the rice field soils can be classified into Stagnic Anthrosols(Paddy soil)according to Genetic Soil Classification.The three profiles with Anthrostagnic evidenc belonged to Bori-Udic Cambosols and Haplic-Udic Cambosolse.However,the current version of CST lacked the subgroup with Anthrostagnic evidence of these groups.So we suggest to add subgroups with Anthrostagnic evidence in the two groups of CST.
作者
王天豪
韩春兰
王秋兵
WANG Tian-hao;HAN Chun-an;WANG Qiu-bing(College of Land and Environment,Shenyang Agricultural University,Shenyang 110866,China)
出处
《土壤通报》
CAS
北大核心
2018年第1期1-8,共8页
Chinese Journal of Soil Science
基金
国家自然科学基金(41371223)
科技部国家科技基础性工作专项(2014FY110200A06)资助
关键词
植稻土壤
水耕人为土
水耕现象
水稻土
中国土壤系统分类
土壤发生学分类
Rice field soil
Stagnic Anthrosols
Anthrostagnic evidence
Paddy soil
Chinese Soil Taxonomy
Genetic Soil Classification
