Table 4 The average water content at different sampling in different SAP concentrations.

From: Effect of various concentrations of superabsorbent polymers on soil particle-size distribution and evaporation with sand mulching

sampling points

CK

0.10%

0.20%

0.50%

1.00%

2 cm

before evaporation

36.73

37.83

39.29

40.66

42.55

day 10 of evaporation

28.55

32.70

33.64

34.56

38.16

day 20 of evaporation

27.97

29.41

31.57

32.08

34.64

day 30 of evaporation

26.07

28.91

30.85

30.93

33.65

18 cm

before evaporation

34.33

36.07

37.52

37.84

38.81

day 10 of evaporation

30.84

30.93

32.67

33.83

34.85

day 20 of evaporation

29.21

29.67

31.25

31.84

33.13

day 30 of evaporation

28.21

29.35

30.34

31.53

33.76

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