Poultry litter biochar

pH

N

P

K

Ca

Mg

Na

Fe

Cu

Zn

Mn

------------------------------------------------------------g∙kg−1------------------------------------------------------------

10.1

42.31

32.56

48.56

57.75

12.40

14.37

137

812

700

863

MB-4

SiO2

Al2O3

Fe2O3

CaO

MgO

Na2O

K2O

P2O5

S

---------------------------------------------------%--------------------------------------------------

39.7

7.1

6.9

5.9

17.8

1.5

0.8

0.075

0.2