Effect of Sludge Addition in Paper Mill on Peanut Growth and Development and Its Safety Evaluation
The paper mill sludge was added to study its effects on peanut growth and development,yield and soil physical and chemical properties,and the safety of sludge application was evaluated by measuring the content of heavy metals and other harmful substances in soil and peanut grains.The results show that the sludge addition can promote the growth and development of peanut,improve the peanut yield,and is positively correlated with the application amount of sludge,among which the effect of XCL3 treatment is the best;The sludge can improve soil fertility,balance soil acidity and regulate the water-soluble salt content;The heavy metal content in soil and peanut grains after sludge application meets the national standard.
sludgepeanut yieldsoil physical and chemical propertyheavy metal content