水土保持通报2025，Vol.45Issue(2)：12-21,10.DOI:10.13961/j.cnki.stbctb.2025.02.002
微藻肥对土默川平原盐渍土理化性质及玉米产量的影响
Effects of microalgal fertilizer on physical and chemical properties of saline soils and maize yield in Tumochuan Plain
摘要
Abstract
[Objective]The effects of three types of microalgal fertilizers and their varying application rates on soil salinity,physiological indicators,and maize yield were explored,in order to provide a new scientific basis for the enhancement of saline soil.[Methods]A field experiment was conducted using saline alkali collected from the Tumochuan Plain.Three kinds of microalgal fertilizer(designated as W1,W2,and W3)were formulated for the experiment.Each microalgal fertilizer was established with three levels of application(15,30,and 45 L/hm2,designated as N1,N2,and N3,respectively),a control without fertilizer,resulting in a total of 10 treatments.[Results]① Regarding the physical and chemical parameters of soil,the application of microalgal fertilizer considerably decreased soil bulk density by 4.11％to 12.34％compared to the control treatment.Soil porosity increased from 10.82％to 38.31％.The soil pH value and salt concentration fell by 1.82％—9.9％and 17.12％—47.66％,respectively.② As for maize growth,compared with the control treatment,the plant height,stem diameter,and leaf area index of maize subjected to the microalgal fertilizer treatment increased from 1.12％to 18.47％,1.15％to 29.02％,and 22.5％to 74.14％,respectively.The 100-grain weight and yield improved by 16.02％—48.31％and 15.73％—41.31％,respectively.Maize yield had a significantly negative correlation with soil bulk density and pH value while demonstrating a significantly positive correlation with the leaf area index.[Conclusion]The effect of the W2 microalgal fertilizer applied at a rate of 30 L/hm2(W2 N2 treatment)on improving saline soil and increasing maize yield was better;it should therefore be given priority when selecting microalgae to improve saline soil in the Tumochuan Plain.关键词
微藻肥/盐渍土改良/玉米/土默川平原Key words
microalgal fertilizer/saline soil improvement/maize/Tumochuan Plain分类
农业科技引用本文复制引用
李慧欣阁,陈士超,段鹏程,蔺方春..微藻肥对土默川平原盐渍土理化性质及玉米产量的影响[J].水土保持通报,2025,45(2):12-21,10.基金项目
内蒙古自治区科技计划项目"乌梁素海流域农业面源污染防控减排及河湖水生态修复技术研究"(2022YFHH0088) （2022YFHH0088）
