The Physicochemical Property of Mushroom Residue and Sludge Substrate and Its Effect on Growth of Ligustrum Container Seedlings

Mushroom residue and sludge as principal raw material,by using randomized complete block design,container seedlings of 2 privet species were planted in different proportion substrate of mushroom residue and sludge.The result showed that substrate total pore space,aeration pore and big and small void ratio were affected by sludge dosage.As the sludge content was higher,the total pore space,aeration pore and void ratio were lower.Matrix pH value mainly was affected by mushroom residue and sludge content.The ratio of mushroom residue and sludge was 6∶4 or 5∶5 might significantly improve the survival rate of transplanting and height growth of Ligustrum japonicum and Ligustrum×vicaryi.The result indicated that the substrate formula was suitable for production of privet container seedlings.