土壤与作物2026，Vol.15Issue(1)：81-91,11.DOI:10.11689/sc.2024082001
红壤耕地施镁对油菜产量及品质的影响
Effects of magnesium chloride and magnesium sulfate on rapeseed yield and quality in red soil farmland
摘要
Abstract
To evaluate the effects of magnesium chloride(MgCl2)and magnesium sulfate(MgSO4)on rapeseed yield and quality in red soil farmland,a two-site field experiment was conducted at Jinxian,Jiangxi Province,with three Mg fertilizer treatments(no Mg fertilizer,MgCl2 and MgSO4)in dryland and paddy fields from typical red soil areas between 2022 and 2023.Rapeseed yield and its components,biomass and Mg accumulation,seed oil,protein,sulfide content and fatty acid fractions were analyzed.The results show that compared with the control,MgCl2 and MgSO4 applied to red soil paddy fields and dryland can significantly increase rape-seed grain yields.Applying MgCl2 and MgSO4 increases the yield by 14.4%and 19.1%in red soil paddy fields,by 13.4%and 17.7%in red soil dryland,respectively.The yield gain of rapeseed is primarily attributed to the increase in pod number per plant with better enhancing effect of MgSO4 than that of MgCl2.Both application of MgCl2 and MgSO4 also significantly increases the biomass,mag-nesium content and magnesium accumulation in the above ground of rapeseed.MgSO4 application exhibits a higher harvest index and magnesium fertilizer utilization rate.The yield of rapeseed in red soil dryland is slightly higher than that in red soil paddy fields,but the yield increase rate is lower than that in red soil paddy fields.The application of MgCl2 and MgSO4 as base fertilizers in both farmland increases the oil content and oleic acid content,reduces the erucic acid,stearic acid and palmitic acid content,and enhances the yield of oil and protein,thus improving rapeseed quality.MgSO4 is better than MgCl2 in improving the quality with better quality improvement effect in paddy fields.The application of MgCl2 and MgSO4 in both paddy fields and dryland of red soil all demonstrates a significant synergistic improvement effect on rapeseed yield and quality.The overall effect of MgSO4 in increas-ing yield and quality is better than that of MgCl2.It is recommended to choose MgSO4 as the basal magnesium fertilizer in red soil paddy fields and dryland.关键词
镁肥/红壤水田/红壤旱地/油菜/产量/品质Key words
magnesium fertilizer/red soil paddy field/red soi dryland/rapeseed/yield/quality分类
农业科技引用本文复制引用
李子婧,王馨悦,张晨,李炳霖,徐悦颖,黎星,刘小三,肖国滨,吕伟生..红壤耕地施镁对油菜产量及品质的影响[J].土壤与作物,2026,15(1):81-91,11.基金项目
国家油菜产业技术体系建设专项(CARS-12) （CARS-12）
江西省油料产业技术体系专项(JXARS-03) （JXARS-03）
耕地改良与质量提升江西省重点实验室(2024SSY04223) （2024SSY04223）
江西省农牧渔业科研指导性课题(赣农厅办函[2024]12号). （赣农厅办函[2024]12号）
