亚铵法造纸废液干粉对土壤酶活性的影响

采用盆栽试验方法研究了亚铵法造纸废液干粉不同添加量对土壤脲酶、磷酸酶、转化酶及多酚氧化酶活性的影响。结果表明,在未种植青菜的处理中,干粉显著抑制土壤脲酶、磷酸酶、转化酶及多酚氧化酶活性,抑制程度随施入量的增加而增大;在种植青菜的处理中,除了脲酶活性受到干粉促进外,磷酸酶、转化酶及多酚氧化酶活性均受到干粉的抑制,变化趋势均与未种植青菜的处理类似。

Effects of dry powdered sludge of waste liquid from papermaking with ammonium sulfite method on soil enzyme activities

A pot experiment was conducted to investigate the effects of dry powdered sludge of waste liquid from papermaking with ammonium sulfite method on enzyme activities of urease, phosphatase, invertase and polyphenoloxidase. Results showed that dry powdered sludge retarded the activities of urease, phosphatase, invertase and polyphenoloxidase in the treatments without greengrocery, and the retarded level was enhanced with the increase of input amounts of dry powdered sludge. In treatments of planting greengrocery, the activities of phosphatase, invertase and polyphenoloxidase were retarded and showed the same trend with the treatments without greengrocery except urease which showed a reverse trend.