Abstract:Abstracts:Organic fertilizer can remidate the soil heavy metal pollution, increase the content of soil organic matter and its quality,improve physical,chemical and biological characteristics,increase content of N and P and enhance the soil water retention, fertilizer maintenance and permeability.Organic fertilizer provides the soil with a lot of micro organisms to improve the soil enzyme activity,accelerate the decomposition and circulation of organic nutrients in the soil to realize the sustainable utilization of soil.