4

8

85

8.6

6

61

6.2

9.75

58

5.9

5

9.7

57

5.8

7

65

6.6

12

39

4

6

11.3

41

4.2

8

70

7.1

14.25

40

4.1

7

13

35

3.5

9

77

7.8

16.5

42

4.3

8

14.7

34

3.4

10

81

8.2

18.75

47

4.8

9

16.3

34

3.4

11

85

8.6

21

60

6.1

10

18

37

3.8

12

89

9

23.25

77

7.8

11

19.7

46

4.7

13

91

9.2

25.5

89

9

12

21.3

58

5.9

14

94

9.5

27.75

102

10.3

13

23

91

9.2

15

96

9.7

30

112

11.4

集中区平均值

Mean value of concentration area

4.56

12.6

4.91

集中区标准误

Standard error of concentration area

0.96

0.77

1.32

集中区95%置信区间

Concentration 95% confidence interval

4.56 ± 0.96

12.6 ± 0.77

4.91 ± 1.32

模型最优值

Model optimum

3

3

3

合理施肥区间

Reasonable fertilize interval

3~5.52

3~13.37

3~6.23

纯元素比例

Pure elements proportion

1

0.26~0.46

1.13~1.28