Table 1 The target relative soil water content (θt) and actual relative soil water content (θa) in the supplemental irrigation treatments (W2, W3 and W4) after jointing and anthesis in 2012/2013 and 2013/2014 growing season, the amount of supplemental irrigation (CIR) is also indicated.

From: Radiation Interception, Chlorophyll Fluorescence and Senescence of Flag leaves in Winter Wheat under Supplemental Irrigation

Treatments

Supplemental irrigation at jointing

Supplemental irrigation at anthesis

Total

θt(%)

θa(%)

CIR (mm)

θt(%)

θa(%)

CIR(mm)

CIR(mm)

2012/2013

W2

65(18.7)

64.7(18.6)

30.7

70(21.1)

71.1(20.4)

32.0

62.8

W3

65(17.8)

63.5(17.4)

49.6

70(19.2)

68.2(18.7)

51.2

100.8

W4

65(17.7)

63.5(17.3)

65.8

70(19.1)

67.9(18.5)

66.7

132.5

2013/2014

W2

65(18.9)

64.1(18.6)

23.8

70(20.3)

68.2(19.8)

24.5

48.3

W3

65(18.5)

63.4(18.1)

44.0

70(20.0)

70.3(20.0)

45.5

89.6

W4

65(20.3)

64.1(17.9)

58.0

70(19.6)

72.8(20.4)

66.7

124.7

  1. The treatments of W2, W3 and W4 were supplemental irrigation determined by measuring 0–20 cm, 0–40 cm and 0–60 cm soil layer moisture, respectively, and brought the soil moisture to 65% field water-holding capacity (FC) at jointing and 70% FC at anthesis.
  2. The data in the bracket are the soil water content by weight-base, which is calculated as relative soil water content multiples FC.
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