Abstract:

In the study we collected cultivated brown soil from tianzhu mountain in shenyang east mausoleum. The effect of different source humic acid on soil enzyme activity was studied in lavorafory. The experimental results showed that three humic acid all inhibit the activity of urearse and catalase. The action of lignite humic acid is highest. Three humic acid all promote the activity of invertase and neutral phosphatase, in it the lignite humic acid has highest action on the activity of neutral phosphatase, while the effect of weathering coal humic acid on the activity of invertase is highest.