菌根真菌对粉煤灰充填复垦中金属元素的利用

针对煤矿废弃物粉煤灰中微量金属元素的利用问题，利用丛枝菌根真菌对矿质元素的调节功能，采用充填复垦盆栽试验，比较不同菌株及其联合作用对植株和基质中微量元素的影响。结果表明：对于宿主而言，接菌能提高对锌、铁、铜的吸收量，同时能抑制有害金属元素铅和锰的过量吸收；菌丝能吸收过量的锰元素；不同充填厚度比较，菌根真菌吸收锌、铁、铜的能力优于根系。对于基质而言，接菌能提高基质中锌、铁、铜和铅含量，降低锰含量；分室中所有接菌处理有效锌、铜、铁的单项丰缺指数都大于对照。接菌处理能够弥补因减小覆土厚度产生的影响，为充填复垦节约成本。

Metal elements utilization by mycorrhizal fungi in fly ash reclamation

In view of coal mine waste utilization of trace metal elements in fly ash，using of arbuscular mycorrhizal fungi regulating function of mineral elements，through the reclamation experiment in pot，the different strains of trace element in plant and matrix were compared，which were named Glomus mosseae(G.m)and phosphate-solubilizing bacteria isolated from coal fly ash(CA)and their combined effects.The results show that for the host，inoculated process increases its absorption amount of zinc，iron and copper，while inhibits the excessive absorption of harmful metal elements such as lead and manganese.The mycelium could absorb excess manganese.In different filling thickness comparison，the absorption capacity of zinc，iron and copper by mycorrhizal fungi is better than the root.For the matrix，inoculation could improve the content of zinc，iron，copper and lead，and reduce that of manganese.In compartments process，single abundance and deficiency index of effective zinc，copper and iron of all inoculation treatments are greater than the control.The inoculation treatments could compensate for the impact caused by reducing the thickness of sand in filled reclamation，cost savings.