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Table 2 Grain–straw ratio [11,12,13]

From: Value creation of straw-based biogas in China

Region

North agricultural region

Northeast agricultural region

Agricultural region in middle and lower reaches of Yangtze River

Northwest agricultural region

Southwest agricultural region

Southern agricultural region

Early rice (HI)1

0.93

0.97

1.28

0.93

1.00

1.06

Mid-season rice and one-season late rice

0.93

0.97

1.28

0.93

1.00

1.06

Double crop late rice

0.93

0.97

1.28

0.93

1.00

1.06

Winter wheat

1.34

0.93

1.38

1.23

1.31

1.38

Corn

1.73

1.86

2.05

1.52

1.29

1.32

Beans

1.57

1.70

1.68

1.07

1.05

1.08

Tubers

1.00

0.71

1.16

1.22

0.60

1.41

Peanut

1.22

1.22

1.50

1.22

1.65

1.65

Rapeseed

2.05

2.05

2.05

2.00

2.00

2.00

  1. HI = harvest index, related amount of straw per ton of harvested grain. Table 2 lists the grain–straw ratio of major crops in China in different agricultural regions
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Energy, Sustainability and Society

ISSN: 2192-0567

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