Abstract:

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.