文档介绍：AM真菌与膨润土对蚕豆生长和重金属累积的影响*
师俊杰米雅竹何永美李博蒋明李元湛方栋收稿日期 Received: 2017-12-20 接受日期 Accepted: 2018-02-24
*国家自然科学基金项目(41461093, 41661056);云南省自然科学基金(2016FB032);云南省科技创新团队(2017HC015)资助 Supported by the National Natural Science Foundation of China (41461093, 41661056), the Natural Science Foundation of Yunnan Province (2016FB032) and the Science and Technology Innovation Team of Yunnan Province (2017HC015)
**通讯作者 Corresponding author (E-mail: ******@ynau.)
云南农业大学资源与环境学院昆明 650201
摘要丛枝菌根真菌(Arbuscular mycorrhizal fungi,AMF)和膨润土都能影响植物的生长和对重金属的吸收。以铅锌矿区周边污染农田土为供试土壤,开展室内盆栽试验,研究接种AMF、施膨润土的单独和复合处理对蚕豆生长和重金属累积的影响。结果表明:接种AMF、施膨润土、AMF+膨润土复合处理都增加蚕豆叶片光合色素含量、株高和生物量,降低土壤有效态重金属含量,减少植株地上部和地下部重金属含量,但增加蚕豆地上部重金属的累积量。AMF+膨润土复合处理下,蚕豆叶片光合色素(叶绿素a、叶绿素b和类胡萝卜素)含量和植株生物量最大,土壤有效态重金属含量和植株重金属含量最低。双因素方差分析表明,接种AMF、施膨润土对土壤重金属有效态含量、蚕豆生长(叶片光合色素含量、株高、生物量)、植株重金属含量与累积量存在显著或极显著的影响,但接种AMF与施膨润土处理间没有显著的交互作用。表明重金属胁迫下,接种AMF和施膨润土单独处理都能促进蚕豆生长和降低植株重金属含量,但复合处理没有叠加效应。
关键词共生真菌;黏土矿物;蚕豆;生物量;重金属含量
Effects of bentonite and AM fungi on growth and heavy metal accumulation of faba bean*
SHI Jun-jie,MI Ya-zhu,HE Yong-mei,LI Bo,JIANG Ming,LI Yuan & ZHAN Fang-dong**
College of Resources and Environment,Yunnan Agricultural University,Kunming 650201,China
Abstract Both the arbuscular mycorrhizal fungi (AMF) and bentonite and affect the plant growth and absorption of heavy metals. This paper aimed to study the effects of the individual bined treatments of AMF and bentonite on the growth and heavy metals accumulation in the faba bean. A pot experiment was conducted using the heavy metals polluted soil around a lead-zinc mining area in Yunnan Province. The individual bined treatments of AMF and bentonite increased the photosynthetic pigments content in leaves, height and biomass of the faba bean, reduced the content of available heavy metals in soils, and decreased the heavy metals content in the aboveground and underground plant, but increased the heavy metals accumulation in the aboveground plant. A highest content of photosynthetic pigme