【作者】 王振健；

【导师】 邓良基； 王昌全； 张世熔； 夏建国；

【作者基本信息】 四川农业大学 ， 土壤学， 2002， 硕士

【摘要】 本文以成都平原主要水耕人为土为例，在中国土壤系统分类思想的指导下，通过典型采样、土壤详查、环境调查和室内理化分析，遵循土系分化影响因子的稳定性、差异性、主导性及综合性等原则，利用统计分析和系统综合分析等方法，对水耕人为土的土系划分指标选取、土系划分、土系命名及检索等作了较为系统的研究。结果表明：(1)成都平原水耕人为土土系的主要分化影响因子为：100cm范围内的土体构型、游离氧化铁、表层质地、表层粘砂比。(2)土系划分的指标为：地表向下深至100cm处的土体内Ap1、Ap2、Br、G等特征土层的有无及排列组合关系；水耕氧化还原层和水耕表层(耕作层)的DCB浸提性铁的比例是否≥1.5；表层的质地；表层的粘砂比，其区间为40.27、0.28～0.54、0.55～0.74、0.75～1.04、≥1.05。(3)土系采用直接命名法(如：清江系)，其检索采取剖面构型+表层优势质地+粘砂比的性态检索顺序(如：Ap1-Ap2-C+粘壤土+≤0.35)，被研究的10个典型土壤剖面被划分为清江系、北河系等10个土系，分别隶属于5个水耕人为土亚类、4个水耕人为土土类。更多还原

【Abstract】 Based on typical sample,soil survey,environment survey and soil physical-chemical analysis,under the direction of Chinese soil Taxonomy,according to the principle of stability,discrepancy,dominant and integration of soil series taxonomy,applying to methods of statistic analysis and system integration,the selection of indexes of soil series taxonomy of hydragric anthrosols in Chengdu plain soil series taxonomy soil series naming and index were systemically sturied. The results showed:(l)the main affectoi of hydragric anthrosols soil series in chengdu plain were:soil structure in 100cm soil depth;Fe2O3( DCB);the texture of hydragric epipedon(cultivation horizon);the proportion of clay and salt in hydragric epipedon(cultivation horizon). (2)the index of soil series taxonomy were:wheather there are the characterbsoil horizon (Apl Ap2 Br,G)in the soil of 100cm depth and the permataction and combination of the character soil horizon must be consided .if the the proportion of Fe2O3( DCB) in hydragric horizon and cultivation horizon 1.5;the texture of hydragric epipedon(cultivation horizon);the range of the proportion of clay and salt in hydragric epipedon(cultivation horizon)ware:<0.27. 0.28-0.54 0.55-0.74x 0.75-1.0 1.05. (3) the definition of soil series Applied the method of direct nomenclature(eg. Qingjiang series),searches of soil series was the order:soil structure - the texture of hydragric epipedon -the proportion of clay and salt (eg. Apl-Ap2-G-clay loam-0.54),10 typical soil sections were classified 10 soil series(eg.qingjiang series beihe series) and belonged to 5 subgroups and 4 groups of hydragric anthrosols.更多还原