Effects Of Garden Waste Composting On Green Soil

With the development of ecotype city, the traditional way to dispose garden waste, burying and setting on fire will not meet the requirements of continuable development. More and more cities have built up the system to sort garden waste and life waste, mills to crush branches. Then they compost garden waste and return it to farmland. Recycling of garden waste will not only reduce cost of garden city but also bring ecotypic effect. But usually the PH of garden waste composting are too high, nutrient is less and nutrition index are unbalanced. So it will not meet the requirements of growing garden plant. It is critical to study garden waste composting and its effect on garden plants.The study analyzes the different physical and chemical character in Jing’An district, inclusive of PH, EC, quality, consistency, venthole, moisture, etc. It investigates the nutrient status in different locations, including organism, Total N, Active P, Active K, etc. Based on the above analysis, it assesses the soil quality in Jing’An district. In order to find the optimized way to compost garden waste and improve soil, the study tests different garden waste composting in different region. It provides technical support to improve green soil, accelerate plant growing, exert ecotopic effects and drives recycling of garden waste.1) Quality evaluation of green soilThe main factor to influence soil is PH. With the downgrade of soil quality, the passing rate of organic matter, Total N, Active P decrease accordingly. The total passing rate of EC, Active K is higher, so they have a little impact on quality grade. Most green soil in Jing’An District are Grade Ⅱ, Ⅲ; The quantity of soil in Grade Ⅰ equals to the sum of Grade Ⅳ and Grade Ⅴ.2) Comparison of the physical character in improved soilPH of improved soil is dereased after implementing of original scheme (M1), new scheme A(M2), new scheme B(M4). New scheme A(M2) is most effective except for organic fertilizer. Although EC of improved soil increases, it doesn’t bring accumulation of salinity. It illuminates that all the schemes are proper.3) Effects on nutrient conditions in improved soilThe organic matter increases in improved soil after implementing of original scheme (Ml), new scheme A(M2), new scheme B(M4). Comparatively, the common organic fertilizer is less effective. Total N, Active P and Active K increases in improved soil. New scheme A(M2) is most effective.4) Comparison of general quality in improved soilThe general quality index and quality grade improve greatly after soil is improved.