Abstract：
Agricultural arsenic (As, CAS. No. 7440-38-2) over the issue of pollution has been related to people\'s livelihood, security and moderate use of As contaminated soil is an important aspect of contaminated soil remediation. In this potted plant experiment, synergistic effects of arbuscular mycorrhizal fungi (AMF) Funneliformis mosseae and iron (Fe, CAS. No. 7439-89-6) oxides on plant growth and phosphorus (P, CAS. No. 7723-14-0), As and Fe uptake by maize (Zea mays L.) were studied on simulating medium As-polluted soils in greenhouse. Different amounts (0, 5, 10, 20, 40 g kg- 1) of iron tailings (IT) were added. The results showed that IT20 and IT40 addition significantly increased mycorrhizal infection rate, plant biomass, root length and P, Fe uptake under FM treatment; IT40 addition decreased As concentration in roots. In addition, FM inoculation increased biomass, root length and P uptake by shoots, but decreased Fe and As concentration in shoots. Therefore, the combined FM inoculation and IT40 addition promoted maize growth and decreased As concentration in shoots by decreasing As absorption efficiency, increasing P and Fe uptake and P/As ratio.
摘要：
农业砷(As，CAS.不。7440-38-2)污染问题一直关系到民生，As污染土壤的安全和适度利用是污染土壤修复的重要方面。在这个盆栽植物实验中，丛枝菌根真菌(AMF)真菌和铁(Fe，CAS.不。7439-89-6）氧化物对植物生长和磷的影响（P，CAS.不。7723-14-0），在模拟温室中中等As污染土壤的情况下，研究了玉米（ZeamaysL.）对As和Fe的吸收。添加不同量(0、5、10、20、40gkg-1)的铁尾矿(IT)。结果表明,添加IT20和IT40可显著提高菌根感染率,植物生物量，根长和P,FM处理下的铁吸收；添加IT40降低了根中的As浓度。此外,FM接种增加生物量，根长和枝条对磷的吸收，但降低了芽中的Fe和As浓度。因此,FM接种和IT40的联合添加促进了玉米的生长，并通过降低As吸收效率来降低芽中的As浓度，增加磷和铁的吸收和磷/砷比。
