Effects and Contribution of Interspecific Rhizosphere Interaction and AMF on Phosphorus Uptake in Maize ‖ Peanut System
Hu Xiaona
Zheng Yan
Zhao Wei
Zheng Bin
Meng Weiwei
Wang Xiaoxiao
Wang Jiangtao
Liu Ling
Jiao Nianyuan
Fu Guozhan
Abstract：To investigate the effects and contribution ratio of interspecific rhizosphere interaction and ar-buscular mycorrhizal fungi(AMF)on phosphorus(P)uptake of interplanted maize and peanut(maize ‖ pea-nut),this experiment took maize ‖ peanut system as the research object,and set six treatments as interspecific root separation with plastic sheet(PN),interspecific root separation with plastic sheet+AMF(PY),interspe-cific root no separation(NN),interspecific root no separation+AMF(NY),interspecific root separation with 30 μm nylon mesh+AMF(M30Y)and interspecific root separation with 0.45 μm nylon mesh+AMF(M0.45Y).The effects of different interspecific separation methods and AMF inoculation on P uptake in maize ‖ peanut system were studied,and the rhizosphere interaction and contribution rate of AMF were quantified.The results showed that the trend of P uptake in maize ‖ peanut system was NY＞NN＞M30 Y＞PY＞M0.45 Y＞PN.Among them,compared with PN,NN significantly increased the P uptake of maize,peanut and intercropping system by 100.24％,38.90％and 78.55％,respectively,which increased by 216.53％,119.60％and 182.21％,re-spectively,after inoculated with AMF(NY).Further analysis showed that the contribution ratios of interspe-cific rhizosphere(ICR)to the P uptake of maize,peanut and intercropping systems were 47.10％,32.60％and 43.57％,and the contribution ratios of total mycorrhizal effect(MFN)were 52.90％,67.40％and 56.43％,respectively.Among them,the intraspecific mycorrhizal effect(MF)contribution ratios were 17.45％,13.67％and 16.56％,respectively,and the contribution ratios of interspecific common mycorrhizal networks(MN)were 35.46％,53.73％and 39.87％,respectively.In conclusion,interspecific rhizosphere in-teraction had promoting effects on P uptake in maize ‖ peanut system,and inoculation of AMF could enhance this promoting effect,which further improved P uptake in intercropping system.This study could provide the theoretical basis for efficient utilization of phosphorus in maize ‖ peanut system.
Keywords：Maize ‖ peanutArbuscular mycorrhizal fungi(AMF)Interspecific rhizosphere interac-tionPhosphorus uptakeContribution ratio
Publication Date：2025-08-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 100-106 )