The Effects of Controlled Drainage on N Concentration and Loss in Paddy Field

Table 1

Physical and chemical characteristics of topsoil (0–30 cm layer) in lysimeters.

		Porosity	pH	Organic matter	Total N	Available N	Total P	Available P
(%)	(g/cm^3)	(%)	(—)	(g/kg)	(g/kg)	(mg/kg)	(g/kg)	(mg/kg)
25.28	1.46	44.97	6.97	21.88	0.9048	27.65	0.32	12.5

Note: and represent field moisture capacity and soil bulk density, respectively.