Table 2 Effects of different rotational tillage systems on WUE in 2014–2018.

From: Effects of Conservation Tillage on Soil Physicochemical Properties and Crop Yield in an Arid Loess Plateau, China

Index

Treatment

Experments years/(kg/(ha/mm))

Average

2014

2015

2016

2017

2018

WUE

N ↔ S

23.5a

21.7a

22.8a

22.5a

23.8a

22.9a

S ↔ R

18.9ab

19.9b

19.4b

19.2b

19.8b

19.7b

R ↔ N

16.5bc

19.3ab

16.9bc

16.7ab

17.4bc

17.3ab

N ↔ N

18.3ab

19.8ab

18.9ab

18.8ab

19.3b

18.9b

S ↔ S

19.7b

20.3b

20.3b

19.5b

20.9ab

19.9b

R ↔ R

15.5c

17.4c

15.6c

15.9c

16.2c

16.1c

  1. N ↔ S, no tillage/subsoiling; S ↔ R, subsoiling/rotary tillage; R ↔ N, rotary tillage/no tillage; N ↔ N, continuous no tillage; S ↔ S, continuous subsoiling; R ↔ R, continuous rotary tillage. Different small letters indicate significant differences (P < 0.05) within the same column.
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