湘东两类母质发育水田土壤的发生特性及其系统分类

doi:10.3969/j.issn.1004-1524.2018.07.13

浙江农业学报 ›› 2018, Vol. 30 ›› Issue (7): 1194-1201.DOI: 10.3969/j.issn.1004-1524.2018.07.13

湘东两类母质发育水田土壤的发生特性及其系统分类

满海燕^a, 黄运湘^{a, b, *}, 盛浩^{a, b}, 余展^a, 周清^{a, b}, 袁红^{a, b}, 张杨珠^{a, b}

a. 湖南农业大学资源环境学院,湖南长沙 410128;
b. 湖南农业大学土壤研究所,湖南长沙 410128

收稿日期:2017-11-21 出版日期:2018-07-20 发布日期:2018-08-02
通讯作者: 黄运湘,E-mail: yxhuang63@163.com
作者简介:满海燕(1992—),女,山东滕州人,硕士研究生,研究方向为土壤地理学。E-mail: 122755660@qq.com
基金资助:
国家科技基础性工作专项(2014FY110200A15); 湖南省教育厅科学研究项目(16C0775)

Genetic characteristics and taxonomic classification of paddy field soils developed from two parent materials in East Hunan

MAN Haiyan^a, HUANG Yunxiang^{a, b, *}, SHENG Hao^{a, b}, YU Zhan^a, ZHOU Qing^{a, b}, YUAN Hong^{a, b}, ZHANG Yangzhu^{a, b}

a. College of Resources and Environment,Hunan Agricultural University, Changsha 410128, China;
b. Institute of Soil Science,Hunan Agricultural University, Changsha 410128, China

Received:2017-11-21 Online:2018-07-20 Published:2018-08-02

摘要/Abstract

摘要： 为明确湘东地区紫色岩风化物和河湖沉积物母质发育的6个典型水田土壤在中国土壤系统分类中的归属,对其成土环境条件、土壤剖面理化性质,以及土壤发生学特性进行研究,依据《中国土壤系统分类检索(第三版)》鉴定其诊断层和诊断特性,确定其在中国土壤系统分类中的归属。结果表明,供试的2类母质发育的水田土壤,pH值均随剖面深度的加深而升高,有机质含量随剖面深度的增加而降低,全铁含量表层土壤低于犁底层和水耕氧化还原层。紫色岩风化物发育的土壤较河湖沉积物发育的土壤颜色更红,水耕表层土壤铁的活化度高于下层土壤,晶胶率低于下层土壤,土壤颗粒组成在剖面层次间变化不明显。鉴定出的诊断层主要有水耕表层、水耕氧化还原层,诊断特性主要有人为滞水土壤水分状况、潜育特征、氧化还原特征。6个水田土壤均属于人为土土纲水耕人为土亚纲,进一步划分出潜育水耕人为土、铁聚水耕人为土、简育水耕人为土3个土类和普通潜育水耕人为土、普通铁聚水耕人为土、普通简育水耕人为土3个亚类,最后划分出5个土族和6个土系。

关键词: 水田土壤, 发生学特性, 诊断层, 诊断特性

Abstract: Six typical paddy field soils, which were developed from either purple rock weathering or river and lake sediments in the East Hunan, were investigated to make its attribution in Chinese Soil Taxonomy clear. The diagnostic horizon and characteristics of 6 paddy field soils were retrieved out and the taxonomic classification were determined according to Chinese Soil Taxonomy (3rd edition) , based on soil forming environment, physical and chemical properties, and genesis characteristics of soil profiles. It was shown that the paddy soil developed from 2 tested parent materials exhibited similarity in soil pH, content of organic matter and total iron. With the deepening of soil profiles, soil pH increased, yet organic matter content decreased. The total iron content of topsoil was lower than that in plow pan and hydragric horizon. Soils developed from purple rock weathering were redder than that developed from river and lake sediments, and the soil particle composition of the former was similar between solum among soil profiles. Fe_o/Fe_d in anthrostagnic epipedon was higher than that in subsoils, while the (Fe_d-Fe_o)/Fe_o was the contrary. The determined diagnostic horizons of all test soils were anthrostagnic epipedon and hydragric horizon, and the diagnostic characteristics were mainly anthrostagnic soil moisture regime, gleyic features and redox features. The 6 paddy field soils belonged to stagnic anthrosol, and could be further divided into 3 groups and 3 subgroups, i.e. gleyi-stagnic anthrosols, Fe-accumuli-stagnic anthrosols, hapli-stagnic anthrosols, and typic gleyi-stagnic anthrosols, typic Fe-accumuli-stagnic anthrosols, typic hapli-stagnic anthrosols. Finally, 5 soil families and 6 soil series of test soils were established.

Key words: paddy field soil, genetic characteristics, diagnostic horizon, diagnostic characteristics

中图分类号:

S155.3

满海燕, 黄运湘, 盛浩, 余展, 周清, 袁红, 张杨珠. 湘东两类母质发育水田土壤的发生特性及其系统分类[J]. 浙江农业学报, 2018, 30(7): 1194-1201.

MAN Haiyan, HUANG Yunxiang, SHENG Hao, YU Zhan, ZHOU Qing, YUAN Hong, ZHANG Yangzhu. Genetic characteristics and taxonomic classification of paddy field soils developed from two parent materials in East Hunan[J]. , 2018, 30(7): 1194-1201.

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湘东两类母质发育水田土壤的发生特性及其系统分类

Genetic characteristics and taxonomic classification of paddy field soils developed from two parent materials in East Hunan

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