Table 1 Effects of tillage practice and irrigation regime on the yield and yield components of winter wheat in lime concretion black soil.

From: Tillage and irrigation increase wheat root systems at deep soil layer and grain yields in lime concretion black soil

Years

Treatments

Spike number

Kernels per spike

Thousand-grain weight

Yield

(104·ha−1)

(kernel·spike−1)

(g)

(kg·ha−1)

2015–2016

SS

W0

536.18ab

38.92ab

46.35a

6984.60d

W1

569.49a

40.48a

43.56bc

8507.85a

W2

573.53a

37.59bc

42.07 cd

7833.30b

RT

W0

497.40b

38.70ab

45.41ab

6528.60e

W1

536.77ab

37.45bc

41.69 cd

8046.90b

W2

534.39ab

35.60c

40.51d

7536.15c

Tillage

 

5.52*

8.93*

8.49*

31.29***

Irrigation

 

2.44

6.88*

29.83**

149.69***

Tillage*Irrigation

 

0.02

1.97

0.30

0.55

2016–2017

SS

W0

683.98bc

29.43c

44.94a

8129.27c

W1

732.83ab

36.67a

41.20bc

9958.63a

W2

770.82a

33.50b

40.01 cd

9277.32b

RT

W0

659.88c

30.87c

42.74ab

7474.23d

W1

717.78abc

36.34a

39.97 cd

9339.25b

W2

726.12ab

33.71b

38.22d

8407.08c

Tillage

 

3.22

0.43

6.59*

56.40***

Irrigation

 

8.46**

29.97***

16.92**

126.19***

Tillage*Irrigation

 

0.32

0.61

0.18

0.68

  1. Data followed by different lowercase letters within any column indicate that the difference is significant at the P = 0.05 level. *, **, and *** indicate significant differences at the P = 0.05, P = 0.01 and P = 0.001 levels, respectively. The same as below.
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