吉林农业大学学报2024，Vol.46Issue(5)：878-885,8.DOI:10.13327/j.jjlau.2023.0113
不同有机培肥措施对盐碱土水稳性团聚体组成及特征的影响
Effects of Different Organic Fertilization Measures on Composition and Characteristics of Water-stable Aggregates in Saline-alkali Soil Aggregates
摘要
Abstract
The effects of different organic fertilization measures on composition and characteristics of water-stable aggregates in saline-alkali soil were studied.The saline-alkali soil with organic ma-terials was selected as the test object,and five treatments were set up,including no-application mate-rial(ck),total return of rice straw(SR),decomposed chicken manure(C),decomposed pig manure(P)and biochar(B).Using traditional evaluation methods and Image-Pro Plus quantitative description method based on scanning electron microscopy(SEM)images,the effects of different organic fertiliza-tion measures on the composition and characteristics of soil water-stable aggregates in saline-alkali soil were studied,and the correlation between aggregate composition and characteristics was ana-lyzed.The results showed that compared with ck treatment,different organic fertilization measures af-fected the distribution of aggregates with different particle sizes and the content of organic carbon in soil.The composition of<0.053 mm powder clay aggregates decreased significantly,and the content of other aggregates increased.Compared with ck treatment,organic fertilization measures increased soil aggregate content by 2-0.25 mm,with an increase of 11.43%-14.76%.The order of organic fer-tilization measures was B>C>P>SR>ck.The mean mass diameter and geometric mean diameter of soil aggregates were increased,and the unstable aggregate index,the failure rate of soil aggregates and the fractal dimension of soil were decreased.In terms of morphological characteristics,organic fertilization measures can also increase area,diameter,eccentricity and roundness of saline-alkali soil aggregates,and reduce fractal dimension of the outline of saline-alkali soil aggregates,indicating that organic fertilization measures can improve aggregate structure.Correlation analysis of aggregate composition and characteristic parameters showed that there was a certain correlation between aggre-gate composition and characteristic parameters,indicating that organic fertilization measures can not only improve aggregate composition,but also improve the morphological characteristics of aggregates.关键词
有机培肥措施/盐碱土/土壤团聚体/有机碳Key words
organic fertilization measure/saline-alkali soil/soil aggregate/organic carbon分类
农业科技引用本文复制引用
高宏哲,吴景贵,李建明,刘文利,耿玉辉..不同有机培肥措施对盐碱土水稳性团聚体组成及特征的影响[J].吉林农业大学学报,2024,46(5):878-885,8.基金项目
吉林省重大科技专项(20230302010NC),吉林省教育厅项目(JJKH20210356KJ) （20230302010NC）
