Heavy metal (HM) pollution in agricultural soils due to the recycling of waste electrical and electronic equipment (WEEE) has become a serious concern, but most farmers cannot afford the economic losses of fallow land during remediation. Thus, it is imperative to produce low-HM crops while remediating the contaminated soils. A 17-week pot experiment was conducted to investigate the growth and HM (Cd, Cu, Pb, Cr, Zn, and Ni) acquisition of garlic chives (Allium tuberosum Rottl. ex Spreng.) intercropped with sunflower (Helianthus annuus L.) and inoculated with (I_+M) or without (I_-M) the arbuscular mycorrhizal (AM) fungus Funneliformis caledonium on a severely HM-contaminated soil that was collected from a WEEE-recycling site. Compared with the monoculture control, the I_-M treatment significantly (P < 0.05) decreased Cd, Cu, Cr, Zn, and Ni concentrations in the shoots of chives through rhizosphere competition and HM (except Cr) transfer from the root to the shoot of chives, and increased the average shoot fresh weight (i.e., yield) of chives by 794% by alleviating HM toxicity. Compared with the I_-M treatment_, the I_+M treatment significantly increased soil phosphatase activity as well as root mycorrhizal colonization of both sunflower and chives. The I_+M treatment had no effect on the tissue P concentration of sunflower but elevated the average dry biomass (shoot plus root) and P acquisition level of sunflower by 179% and 121%, respectively. In addition, the I_+M treatment significantly increased the P concentration in the root rather than in the shoot of chives and significantly increased the level of P acquisition by chives, increasing the average yield of chives by 229%. Simultaneously, the I_+M treatment significantly increased the level of HM (except Cd) acquisition by sunflower, enhancing the rhizosphere competition by sunflower over chives, and further reducing the transfer of all six HMs from root to shoot in the chives, and inducing significant decreases in chive shoot HM concentrations compared with the monoculture control. Furthermore, the I_+M treatment decreased the average total concentrations and increased the average DTPA-extractable concentrations of soil HMs. The results demonstrate the multifunctional role of AM fungi in the intercropping system for both vegetable production and phytoremediation on HM-contaminated soils.

废弃电子电气设备（WEEE）的循环利用导致农业土壤中的重金属（HM）污染已成为严重问题，但大多数农民无法承受补救期间休耕地的经济损失。因此，必须在修复污染土壤的同时生产低重金属作物。一个17周盆栽试验以研究生长和HM（镉，铜，铅，铬，锌，和Ni）采集韭菜的（韭Rottl。前紫茎泽兰）向日葵间作（向日葵L.）并接种（I _{+ M}）或不接种（I _-M）丛枝菌根（AM）真菌Funneliformis caledonium从WEEE回收站点收集的严重被HM污染的土壤上。与单一栽培相比，I _-M处理 通过根际竞争和HM（除Cr）从根部转移到细枝上，显着（P <0.05）降低了细香葱枝条中Cd，Cu，Cr，Zn和Ni的浓度。韭菜，通过减轻HM毒性，使韭菜的平均新梢鲜重（即产量）增加了794％。与I- _M处理相比_， I _{+ M}处理显着提高了向日葵和细香葱的土壤磷酸酶活性以及根部菌根定植。我_{+ M}处理对向日葵组织中的磷含量无影响，但使向日葵的平均干生物量（茎加根）和磷获取水平分别提高了179％和121％。此外，I _{+ M}处理显着提高了韭菜根中的P浓度，而不是细枝中的P含量，并且显着提高了细香葱对P的吸收水平，使细香葱的平均产量提高了229％。同时，I _{+ M}处理显着提高了向日葵对HM的吸收水平（Cd除外），增强了向日葵对细香葱的根际竞争，进一步降低了六种HM从根到细枝的转移，并导致细香笋HM浓度显着降低。与单一栽培对照相比。此外，I _{+ M}处理降低了土壤HM的平均总浓度，并增加了DTPA可提取的平均HM浓度。结果证明了AM真菌在间作系统中对HM污染土壤的蔬菜生产和植物修复具有多功能作用。