SELECTION OF APPROPRIATE DEPTH AND SPACING OF SUBSURFACE DRAINAGE AND COMPARISON OF SOME DRAINAGE EQUATIONS IN RICE CULTIVATION

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ALIZADEH MARYAM; AFRASIAB PEYMAN; YAZDANI MOHAMMAD REZA; LIAGHAT ABDOLMAJID; DELBARI MASOUMEH

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Journal: Journal of Water Research in Agriculture Year:2018 | Volume:32 | Issue:1 Page(s): 1-14

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Title

SELECTION OF APPROPRIATE DEPTH AND SPACING OF SUBSURFACE DRAINAGE AND COMPARISON OF SOME DRAINAGE EQUATIONS IN RICE CULTIVATION

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Keywords

PADDY FIELDQ2

MID-SEASON AND END-SEASON DRAINAGEQ1

DRAINAGE EQUATIONQ1

Abstract

In rice cultivation, MID-SEASON AND END-SEASON DRAINAGE at harvest time are two important operations of water management which, respectively, increase yield and provide better conditions for harvesting rice. Due to the unique conditions of PADDY FIELDs of Guilan province, making decisions about the spacing and depth of drains and proper equation to determine the drainage spacing in PADDY FIELD requires research on the MID-SEASON AND END-SEASON DRAINAGE. Therefore, in this research, the efficiency of drains spacing (L) and depth (D) of subsurface drainage in controlling water table and also accuracy of the steady and non-steady equations were evaluated at MID-SEASON AND END-SEASON DRAINAGE stages in Guilan’ s rice fields. Drainage treatments included six conventional subsurface drainage systems with rice husk envelope including drainage system with drain depth of 0. 8 m and drain spacing of 7. 5 m (L7. 5 D0. 8), (L10 D0. 8), (L15 D0. 8), (L7. 5 D1), (L10 D1), and (L15 D1). All drain lines were 40 m long and made of PVC corrugated pipes with a diameter of 125 mm. Results showed that subsurface drainage with spacing of 15 m and depth of 80 cm (due to the proper water table depth and higher yield) and subsurface drainage with distance of 10 m and depth of 80 cm (due to the highest resistance to pentrometer penetration and the lowest soil moisture content) are recommended as the best drainage treatment for MID-SEASON AND END-SEASON DRAINAGE, respectively. Dagan, Hooghoudt and Bouwer & Van Schilfgaarde equations combined with Hooghoudt equation were suitable equations for determining drainage spacing at mid-season drainage stage. Hooghoudt, Kirkham, Dagan, Bouwer & Van Schilfgaarde equations combined with Hooghoudt equation and Glover-Dumm equation were selected as suitable formulas for determining the spacing of subsurface drains for end-season drainage.

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APA: Copy

ALIZADEH, MARYAM, AFRASIAB, PEYMAN, YAZDANI, MOHAMMAD REZA, LIAGHAT, ABDOLMAJID, & DELBARI, MASOUMEH. (2018). SELECTION OF APPROPRIATE DEPTH AND SPACING OF SUBSURFACE DRAINAGE AND COMPARISON OF SOME DRAINAGE EQUATIONS IN RICE CULTIVATION. IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES), 32(1 ), 1-14. SID. https://sid.ir/paper/196772/en

Vancouver: Copy

ALIZADEH MARYAM, AFRASIAB PEYMAN, YAZDANI MOHAMMAD REZA, LIAGHAT ABDOLMAJID, DELBARI MASOUMEH. SELECTION OF APPROPRIATE DEPTH AND SPACING OF SUBSURFACE DRAINAGE AND COMPARISON OF SOME DRAINAGE EQUATIONS IN RICE CULTIVATION. IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES)[Internet]. 2018;32(1 ):1-14. Available from: https://sid.ir/paper/196772/en

IEEE: Copy

MARYAM ALIZADEH, PEYMAN AFRASIAB, MOHAMMAD REZA YAZDANI, ABDOLMAJID LIAGHAT, and MASOUMEH DELBARI, “SELECTION OF APPROPRIATE DEPTH AND SPACING OF SUBSURFACE DRAINAGE AND COMPARISON OF SOME DRAINAGE EQUATIONS IN RICE CULTIVATION,” IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES), vol. 32, no. 1 , pp. 1–14, 2018, [Online]. Available: https://sid.ir/paper/196772/en

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