| 姬朋朋,尹光彩,陈志良,周兵,林亲铁,刘千钧,刘德玲.两种AMF对巨菌草根际土壤Cd生物可利用性以及Cd积累的影响[J].农业环境科学学报,2016,35(12):2306-2313. |
| 两种AMF对巨菌草根际土壤Cd生物可利用性以及Cd积累的影响 |
| Impacts of two kinds of arbuscular mycorrhizal fungi on rhizospheric bio-available Cd and accumulation of Cd for Pennisetum sp. |
| 投稿时间：2016-07-03 |
| DOI：10.11654/jaes.2016-0878 |
| 中文关键词: 巨菌草 丛枝菌根真菌 镉 |
| 英文关键词: Pennisetum sp. arbuscular mycorrhizal fungi(AMF) Cd |
| 基金项目:国家自然科学基金项目（31370530，21677041，41371317）；广州市科技计划项目（201604030017，201604020077） |
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| 中文摘要: |
| 利用盆栽巨菌草（Pennisetum sp.）实验，研究了不同土壤镉（Cd）浓度（T0：空白；T1：5 mg·kg-1；T2：10 mg·kg-1；T3：15 mg·kg-1）条件下，接种两种丛枝菌根真菌（Arbuscular mycorrhizal fungi，AMF）[摩西斗管囊霉（Funneliformis mosseae，Fm）和根内根孢囊霉（Rhizophagus intraradices，Ri）]后土壤中Cd的生物有效性、巨菌草生物量、巨菌草Cd积累量等的变化。结果表明：与不施加菌剂（CK）相比，接种AMF显著降低了土壤中Cd的生物可利用性，在5、10、15 mg·kg-1处理下，接种Fm和Ri后可交换态Cd分别降低了18.65%、20.51%、6.53%和12.54%、16.64%、6.66%；在10、15 mg·kg-1处理下，接种Fm和Ri，植物地上部分生物量分别增加了20.98%、36.94%和36.54%、43.88%，地下部分生物量增加了14.31%、21.79%和25.78%、12.83%。接种AMF显著提高了巨菌草对Cd的吸收能力，其中在5 mg·kg-1处理下接种Ri，巨菌草的重金属富集系数（BCF）最高，达到0.77，由于植物地上、地下部分Cd的含量均增加，巨菌草的Cd转移系数（TF）并没有显著变化。 |
| 英文摘要: |
| Pennisetum sp. was inoculated with two different types of arbuscular mycorrhizal fungi:Funneliformis mossea(Fm) and Rhizophagus intraradices(Ri). And the variations of the rhizospheric bio-available Cd, biomass and plant Cd accumulation were investigated. Four treatments of soil Cd contents(T0:the control, T1:5 mg·kg-1, T2:10 mg·kg-1 and T3:15 mg·kg-1) were carried out by pot experiment. It indicated that the inoculation had significantly decreased the bio-available Cd content. Compared with the control, the ion exchangeable Cd decreased by 18.65%, 20.51% and 6.53% at soil Cd contents of 5 mg·kg-1, 10 mg·kg-1 and 15 mg·kg-1, respectively. And the acidic dissoluble-Cd decreased correspondingly by 12.54%, 16.64% and 6.66% respectively. When treated by soil Cd contents of 10 mg·kg-1 and 15 mg·kg-1, the above-ground biomass of Pennisetum sp. increased by 20.98%, and 36.94% inoculated with Fm, and 36.54% and 43.88% inoculated with Ri, while the below-ground biomass increased by 14.31% and 21.79% inoculated with Fm, and 25.78% and 12.83% inoculated with Ri, respectively. As a result, no obviously variation was observed with the translocation factor(TF), but the inoculation of AMF had significantly increased the Cd accumulation in Pennisetum sp.. The bio-concentration factor(BCF) could reach 0.77 at soil Cd content of 5 mg·kg-1 after inoculating with Ri. |
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