Study On The Regulation Of Soil Productivity In Coal Mining Areas By Microbial Blends

Coal is the most important resource and energy for China. But coal mining will damagethe environment and soil around. One of the main damages is the reducing of soilmicroorganisms and soil enzyme activity. And then the productivity and ecology of the soilwas affected. At present, the soil reclamation rate in coal mining area was as low as12%, andthe technology using soil microorganisms for soil reclamation still need to be explored further.The research focused on microorganisms using in soil remediation technology and took YuYangcoal mining area as researched area. The achievements are as follow:(1) Though field investigation and laboratory analysis, some physical and chemicalproperties of tested soil samples in YuYang coal mining area were achieved: total nitrogen is0.097-0.657g·kg-1, total phosphorus is1.83-6.34mg·kg-1, rapidly available K is19.43-21.08mg·kg-1, organic matter is0.39%-0.85%. Some soil enzyme activities were also measured,unease activity0.045-1.551mg·g-1, invertase activity is0.017-2.644mg·g-1, catalase activityis0.116-1.787ml·(g.h)-1.(2) Based on feasibility and economical efficiency, two kinds of microorganismbacterium agents were chosen for pot experiment. A pot experiment and laboratory analysiswas carried out to study the plant growth of added microbial agents (A and B) in soil and itseffects on soil enzyme activity. The results showed that unease activity, invertase activityand catalase activity increased with the raise of microbial agents, while the content of A was0.3299kg·m-3, the plant growth rate was reached the max, the theoretical plant weight was9.380g. And the same thing did when content of B was0.3480kg·m-3. The weight was9.183g.