Application Of Fermentation Substrate Mixed With Coal-Based Solid Waste And Cow Down For Improvement Of Desertification Soil

Coal resources enrich in the western region of Inner Mongolia, when developing and utilizing coal resources, large quantities of coal-based solid wastes are generated, it caused resources like fly ash wasted, also seriously affected local environment and promoted desertification. In this study, we used coal-based solid wastes and cow dung as fertilizer geological substrates, after coupled microbial agents then applied in the desertification soil and planted energy plants. We tested and evaluated soil quality after applying different fertilizers and explored the best ratio of soil geological fertilizer and effect and feasibility on soil improvement of desertification.In this regenerated geological fertilizer, the share of coal-based solid waste was 20%,30% and 40%, this fertilizer could significantly reduce the pH of the mixed matrix, with mass ratio of 1:4 applied desertification soil, pH of the soil in the range 7.9 to 8.5, to meet the general crop conditions. Panicum virgatum germination rate was between 75% to 80%, Medicago sativa germination rate could reach more than 80%, Helianthus annuus germination rate could reach about 99%. Microbial agents may well improve the germination rate, plant height and total biomass of the species.Different soil after fertilization basic physical and chemical properties, soil fertility, nutrient content and other indicators related analysis and detection, found that after applying regeneration geology fertilizer, soil exists between the index and is not applied fertilizer significantly different, soil quality changed significantly. Indicators of soil bulk density, porosity, air capacity and conductivity have been improve well, soil physical and chemical properties are improved. Microbial agents can significantly improve soil fertility, organic matter, ammonia nitrogen, nitrate nitrogen, phosphorus and potassium content in the soil before planting was significantly higher than planting, soil desertification played very good improvement, nutrition to meet the needs of crop growth. Different fertilization heavy metal content analysis of soil samples tested, fit the soil environmental quality standards.After different fertilizer treatments for each soil fertility factor correlation analysis, improve the soil physical and chemical properties can significantly increase fertility, various indicators of soil physical and chemical properties and nutrient content between complementary and influence each other, thereby forming a complex soil conversion system. Principal component analysis for soil fertility knowing that Medicago sativa, Panicum virgatum and Helianthus annuus in treatments with a coal-based solid waste content of 20%,30% and 40%, and applied with microbial inoculum, reached the highest soil fertility composite scores, respectively. So as to disposal as much as possible coal-based solid waste as well as reach the best soil improvement, we concluded that treatment with 40% coal-based solid waste applied with microbial agents planting Helianthus annuus is the best deal.