Effect of Biochar Application on Soil Properties and Labile Organic Carbon in Orchard

To understand the soil quality change in orchard system, field experiments were conducted to study the effect of biochar application on soil properties and labile organic carbon. The results showed that biochar application to the orchard soil not only increased microbial biomass carbon (MBC) content, but also enhanced field moisture holding capacity, pH value, total N level of the soil,while decreasing soil bulk density. As compared to the control, the moisture content, pH value, total N and MBC concentration of the biochar treated soil increased by 3.26%-25.61%, 0.03-0.30 unit, 61.22%-87.76% and 84.34%-107.55%, respectively. And soil bulk density decreased by 13.13%-19.38%.