Seasonal and interannual change in under-drainage ability in clayey paddy fields

• Published in: Nōgyō Nōson Kōgakkai ronbunshū Vol. 2008; no. 257; pp. 459 - 464,a2
• Main Authors: Yoshida, S.(National Agricultural Research Center, Joetsu, Niigata (Japan). Hokuriku Research Center), Adachi, K, Tanimoto, T
• Format: Journal Article
• Language: Japanese
• Published: The Japanese Society of Irrigation, Drainage and Rural Engineering 2008; 公益社団法人 農業農村工学会
• Subjects: AGING; ARROZALES; CAPACITY BUILDING; CLAY SOILS; CONCENTRACION PARCELARIA; CONDITIONNEMENT; cracks; CREACION DE CAPACIDAD; DEVELOPPEMENT DES CAPACITES; DRAINAGE SOUTERRAIN; DRENAJE SUBTERRANEO; EMPAQUETADO; ENTRETIEN; ENVEJECIMIENTO; filler material; Heavy clay soil; LAND CONSOLIDATION; MAINTENANCE; Maintenance of under-drainage; MANTENIMIENTO; PACKAGING; REMEMBREMENT; RICE FIELDS; RIZIERE; SOL ARGILEUX; SUBSURFACE DRAINAGE; SUELO ARCILLOSO; VIEILLISSEMENT

Ability of under-drainage facility is influenced by the permeability of the soil above the filler layer. Interannual depression of the filler layer or the formation of an impermeable layer by tillage and puddling practices can deteriorate the accessibility of water from topsoil to the filler layer....