Review in Short-term Effects of Organic Materials Application on Soil Ecosystem

Agricultural application of organic materials can improve soil characters and fertility,increase crop yields,but it may also bring the short-term risks to soil ecosystem.However,the risks have not got enough attention.This paper focused on the short-term changes of soil microorganism,turnover of nutrient elements and transformation of heavy metals after organic materials applications,and also discussed the risks in a view of soil health in order to attract high and more attentions to this issue.It hoped to strengthen the mechanisms study of the risks for more reasonable application of organic fertilizers to further improve soil quality and develop organic farm.