丛植菌根在尾矿废弃地生态恢复中的试验研究

矿产资源的大规模开发，导致大面积尾矿废弃地的产生，已引起严重的生态环境问题。通过模拟生物学试验探讨了丛枝菌根真菌在植物适应尾矿逆境和尾矿植被重建中的潜在作用。采用铁尾矿盆栽的方法对接种丛枝菌根真菌的大豆生长、菌根侵染率及尾矿养分变化进行了研究。试验结果表明，接种菌根的大豆侵染率较高，且大豆根系接种菌根的大豆根系氮、磷、钾含量高于对照（CK），最高高出对照2倍以上，在接种不同含量的菌根真菌的试验中（10 g-25 g-50 g），大豆的生长量和养分含量均呈现“低-高-低”的现象。通过试验，接种丛枝菌根真菌能够很好地促进大豆在铁尾矿中的生长，提高大豆对尾矿中营养物质的吸收，对尾矿生态复垦起到了积极作用。试验将菌根技术引入到铁尾矿库的生态恢复研究中，利用植物与丛枝菌根相互用，使植物能够更好地在铁尾矿中生长，为铁尾矿废弃地的生态恢复提出了新思路。

Research on Test of Arbuscular Mycorhiza Ecological Restoration on the Iron Tailings

The large-scale development of mineral resources,causing widespread tailings wastelands of generation,has caused serious ecological environment problems.Through the series of pot experiments were conducted to reveal the potential role of arbuscular mycorrhizal fungi in plant adaptation to the harsh environment and the effect arbuscular mycorrhizal fungi in revegetation.A pot culture experiment was carried out to study the influence of arbuscular mycorrhizal fungi（AMF） including the growth of soybean,infection rate and change of nutrient in tailings.The results showed that the inoculation of mycorrhizal soybean infection rate was higher,and soybean root inoculation of mycorrhizal soybean root of nitrogen,phosphorus and potassium content was higher than CK,the highest control more than two times,higher in inoculation different contents mycorrhizal fungi trial（10 g-25 g-50 g）,soybean growth and nutrient content were significantly low-high-low phenomenon.Through experiment,inoculation arbuscular mycorrhizal fungi could good promote soybean in iron from tailings of growth,raise soybean to tailings of nutrient uptake,tailings ecological reclamation which had played a positive role.The mycorrhizal technology was introduced into the iron tailings of ecological restoration study,the use of plants and arbuscular mycorrhizal with each other,made the plant grow better in iron tailings,and put forward new ideas for ecological restoration of abandoned iron tailings.