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Estiation of water balance components in paddy fields under non-flooded irrigation regimes by using excel solver

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(1)
(2)
(3)
(4)
(5)

0.650 0.600 0.550 0.500 0.450 0.400

Soil moisture (cm

3 cm

)

3)

0 50 100 150 200 250

Precipitation (mm)

Precipitation Calculated soil moisture Observed soil moisture Initial season Crop development Mid-season Late season 40

30

20

10

0

Irrigation (mm)

0 30 60 90 120 150

Runoff (mm)

0 20 40 60 80 100 Day after transplanting

Estimated irrigation water Estimated runoff (a)

(b)

0.650 0.600 0.550 0.500 0.450 0.400

Soil moisture (cm

3 cm

)

3)

0 50 100 150 200 250

Precipitation (mm)

Precipitation Calculated soil moisture Observed soil moisture

Initial season Crop development Mid-season Late season 40

30

20

10

0

Irrigation (mm)

0 30 60 90 120 150

Runoff (mm)

0 20 40 60 80 100 Day after transplanting

Estimated irrigation water Estimated runoff (a)

(6)
(7)

Referensi

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