학술논문
Mechanisms and control of percolation losses in irrigated puddled rice fields
Document Type
Academic Journal
Source
Soil Science Society of America Journal. Nov-Dec, 1994, Vol. 58 Issue 6, p1794, 10 p.
Subject
Language
ISSN
0361-5995
Abstract
The semi-impermeable layer is formed just below the puddled topsoil by the sealing of the macrophores with fine particles. These fine particles are translocated during the process of puddling in rice fields. The semi-permeable layer causes low percolation rate in the soil. The percolation processes are studied using the SAWAH, a one dimensional simulation model. The model also predicts the infiltration rate, pressure and lead gradients and ponding water depth (PWD) in puddled rice fields.