基于最小数据集的川泽泻土壤肥力评价  

Soil Fertility Assessment of Alisma orientale in Sichuan Based on Minimum Data Set

作　　者：杨克方 李瑞荣 金梦真 吴灵梅 周季欣 张亚玉 YANG Kefang;LI Ruirong;JIN Mengzhen;WU Lingmei;ZHOU Jixin;ZHANG Yayu(College of Food and Bioengineering,Chengdu University,Chengdu 610106,China;Institute of Special Products,Chinese Academy of Agricultural Sciences,Changchun 130112,China)

机构地区：[1]成都大学食品与生物工程学院,四川成都610106 [2]中国农业科学院特产研究所,吉林长春130112

出　　处：《河南农业科学》2025年第1期76-89,共14页Journal of Henan Agricultural Sciences

基　　金：国家现代农业产业技术体系项目(CARS-21);国家科技重大专项(2019ZX09201-005)。

摘　　要：为建立科学的四川省土壤肥力评价体系并为川泽泻土壤养分管理提供参考,在川泽泻53个种植区收集159份土壤和川泽泻样品,测定土壤理化性质及川泽泻有效成分,通过主成分分析构建最小数据集,综合评价该地土壤肥力情况。结果表明,川泽泻土壤肥力评价指标主成分分析中特征根值≥1的6个主成分累计贡献率为82.803%,能够代表大部分土壤肥力评价指标的信息。筛选出的最小数据集由土壤p H值及全氮、速效磷、全铁、全锰和全锌含量6项指标构成,去除了68.42%的信息冗余。基于最小数据集的川泽泻土壤质量指数介于0.26~0.82,均值为0.49,采样点78%的土壤肥力属于中高等水平。夹江县、五通桥区、东坡区和彭山县最小数据集土壤质量指数分别为0.529、0.526、0.388、0.603,4个区域土壤肥力差异明显,但各区域土壤肥力变异强度低,适合川泽泻生长。基于全量数据集与最小数据集的土壤质量评价模型的土壤肥力结果相似,两者呈极显著正相关关系且变化趋势较为一致(R^(2)=0.899),表明最小数据集对川泽泻土壤肥力有较好的覆盖作用,可以表征川泽泻土壤肥力状况。川泽泻土壤质量评价因子的障碍度介于0.03~0.08,Nash有效系数为0.673,表明土壤存在轻度障碍因子,最小数据集的土壤肥力评价精确程度高。综上,基于最小数据集构建的土壤质量评价体系可以代表全量数据集对川泽泻土壤肥力进行综合评价,生产中应适当提高土壤p H值,合理施用氮肥、微肥并采取适宜的耕作管理措施,以改善川泽泻土壤肥力,促进川泽泻生长及品质提升。In order to establish a scientific evaluation system of soil fertility in Sichuan Province and provide a reference for soil nutrient management of Alisma orientale,159 soil and Alisma orientale samples were collected from 53 planting bases of Alisma orientale,and the physical and chemical properties of soil and the effective components of Alisma orientale were determined.The minimum data set was constructed by principal component analysis to comprehensively evaluate the soil fertility in this area.The result showed that the cumulative contribution rate of the six principal components with eigenvalues≥1 in the principal component analysis of soil fertility evaluation indexes was 82.803%,which could represent the information of most soil fertility evaluation indexes.The minimum data set was composed of soil pH value,total nitrogen,available phosphorus,total iron,total manganese and total zinc,and 68.42%of the information redundancy was removed.Based on the minimum data set,the soil quality index of Alisma orientale in Sichuan ranged from 0.26 to 0.82,with an average of 0.49,and 78%of the soil fertility at the sampling points was at a medium to high level.The soil quality indexes of the minimum data set in Jiajiang County,Wutongqiao District,Dongpo District and Pengshan County were 0.529,0.526,0.388 and 0.603,respectively.There were significant differences in soil fertility among the four regions,but the low variation intensity of soil fertility in each region was suitable for the growth of Alisma orientale.The soil fertility results of the soil quality evaluation models based on the total data set and the minimum data set were similar,and the two were significantly positively correlated and the change trend was consistent(R^(2)=0.899),which showed that the minimum data set had a good coverage effect on the soil fertility of Alisma orientale,and could characterize the soil fertility status of Alisma orientale.The obstacle degree of soil quality evaluation factors of Alisma orientale in Sichuan was between 0.03 and

关 键 词：川泽泻 主成分分析 最小数据集 土壤肥力评价 障碍因子 

分 类 号：S567[农业科学—中草药栽培]