Table 1 Physical and chemical properties of soils under different cultivation patterns.

From: Variations in nutrient and trace element composition of rice in an organic rice-frog coculture system

Cultivation patterns

pH

OM

EC

Total N

Available P2O5

Available K

Organic matter

Water storage

Bulk density

Porosity

(H2O)

(g kg−1)

(m S cm−1)

(g kg−1)

(mg kg−1)

(mg kg−1)

(g kg−1)

(mm)

(g cm−3)

(%)

CR

7.3

18.8

0.14

0.91

13.4

101

18.79

23.12

1.36

55.62

ORF

7.5

25.1

0.19

1.21

16.8

127.2

25.09

25.91

1.18

48.62