土壤2026，Vol.58Issue(2)：311-319,9.DOI:10.13758/j.cnki.tr.202503150096
红壤养分扩容与离子平衡调理对玉米生长的影响
Effects of Nutrient Capacity Expansion and Ionic Balance Regulation in Red Soil on Maize Growth
摘要
Abstract
This study addressed the issues of low nutrient storage capacity,low base saturation,and nutrient imbalance in red soil.Using materials including calcium-based bentonite,weathered lignite,organic fertilizer,magnesium sulfate heptahydrate,calcium magnesium phosphate fertilizer,and potassium sulfate,an experiment on soil storage capacity expansion and soil cation balance regulation was conducted to investigate the effects of the above materials on soil cation exchange capacity(CEC),cation balance,and maize growth.Results showed that,calcium-based bentonite,weathered lignite,and organic fertilizer all enhanced soil CEC.The combined treatment of bentonite+weathered lignite+organic fertilizer(BWO)achieved a CEC of 8.70 cmol/kg,increased by 72.96%compared to the control(CK)(P<0.05).Based on soil nutrient capacity improvement,the cation balance regulation treatment(BWO1,BWO+magnesium sulfate heptahydrate+calcium magnesium phosphate fertilizer+potassium sulfate)significantly promoted maize above-ground growth,with plant height,stem diameter,and biomass increased by 55.5%、80.0%and 152.7%,respectively compared to CK(P<0.05).It also enhanced root system development,demonstrating significant increases in total root length(147.0%),total root volume(425.0%),root surface area(234.3%),average root diameter(50.0%),root tip number(101.6%),and branch number(134.3%)compared to CK(P<0.05).The findings indicated that these materials can effectively improve the nutrient storage capacity and cation balance of red soil,thereby enhancing maize nutrient use efficiency and overall growth development.关键词
土壤改良/土壤阳离子交换量/土壤增容/土壤盐基离子平衡Key words
Soil improvement/Soil cation exchange capacity/Soil capacity increment/Soil base ions balance分类
农业科技引用本文复制引用
陈硕,杨梦圆,苏纪康,恽文荣,刘建刚,赵耕毛..红壤养分扩容与离子平衡调理对玉米生长的影响[J].土壤,2026,58(2):311-319,9.基金项目
国家重点研发计划项目(2019YFD0900702,2020YFD0900703)和江苏省水利工程建设项目(CZWJ-QY-2024-LYYJ)资助. （2019YFD0900702,2020YFD0900703）
