沈阳农业大学学报2025，Vol.56Issue(2)：12-21,10.DOI:10.3969/j.issn.1000-1700.2025.02.002
玉米/花生间作下根系互作强度对土壤钾素活化吸收的影响
The Effect of Root Interaction Intensity on Potassium Activation and Uptake in Maize/Peanut Intercropping Systems
摘要
Abstract
[Objective]To investigate the effect of root interactions on soil potassium(K)accumulation and uptake in maize/peanut intercropping,and to provide a theoretical basis for intercropping to improve soil nutrient uptake and utilization.[Methods]A root-box experiment was conducted to examine the impact of varying root interaction intensities(non-partition,partial partition,and complete partition)and K application levels(no K and normal K)on plant growth and rhizosphere soil properties,including pH,organic matter content,and K fractions in a maize/peanut intercropping system.[Results]The aim was to elucidate how intercropping promotes K activation and uptake.Results indicated that normal K application significantly increased total K(by 8.28%-15.85%)and organic matter content(by 22.35%-55.78%)in the rhizosphere,enhancing plant growth,with the effect more pronounced in maize.Compared to complete partition,non-partition treatments exhibited stronger interaction effects in maize.Under no-K conditions,non-partition roots significantly enhanced the activation of non-exchangeable K and organic matter deposition in the rhizosphere,resulting in a 34.61％increase in maize K accumulation compared to complete partition and improving system productivity.Partial partition enhanced peanut's interaction effect,leading to a significant increase in available K and organic matter content in the rhizosphere by 20.24％and 11.10％,respectively,thus boosting peanut yield.[Conclusion]Maize/peanut intercropping promotes K acquisition,crop K accumulation,and yield through root interactions.关键词
根系互作/间作系统/钾组分/系统产量Key words
root interaction/intercropping system/potassium fractions/system yield分类
农业科学引用本文复制引用
周东英,于海秋,赵新华,孙悦馨,苏慧杰,李世贤,董奇琦,张元春,张鹤,王婧,王晓光..玉米/花生间作下根系互作强度对土壤钾素活化吸收的影响[J].沈阳农业大学学报,2025,56(2):12-21,10.基金项目
国家自然科学基金面上项目(32472242) （32472242）
国家现代农业产业技术体系项目(CARS-13) （CARS-13）
