土壤酶

退耕年限(a)

1

2

3

4

5

8

15

24

31

过氧化氢酶[mL/(g.20 min)]

0.97

1.03

0.94

1.02

0.98

1.01

1.01

0.99

0.97

脲酶[mg/(g.d)]

0.43

0.44

0.35

0.44

0.42

0.21

0.12

0.21

0.19

蔗糖酶[mg/(g.d)]

8.61

9.02

12.23

16.51

9.14

12.06

16.03

10.48

9.81

磷酸酶[mg/(g.d)］

2.93

2.51

1.42

2.66

3.17

3.17

2.39

2.72

2.42