Effects of Application of Edible Fungi Wastes on Respiration and Dissdred Organic Carbon in Soil for Dimocarpus longanlour Planting

In laboratory,the soil respiration,dissolved organic carbon(DOC) and microbial biomass carbon(MBC) at 10℃,20℃ and 30℃ with different fertilizations in soil from a longan orchard were studied.The results showed that,in 85 days of incubation,(a)the CO2 production rate was high in the early stage followed by a rapid decrease and stabilization afterwards.The total cumulative amounts of CO2 ranged from 1439 to 4443 mg·kg-1;(b)temperature significantly contributed to the soil respiration-the soil temperature coefficient,Q10 was between 1.49 and 2.08,with the CK the lowest and the N5 treated the greatest;and(c)fungal waste application significantly increased soil respiration,as well as the soil DOC and MBC contents,while other fertilization treatments showed no significant difference.