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

Table 3

N leaching amount of controlled drainage paddy field under two leakage intensity conditions.

Growth stage	Tillering stage		Jointing-booting stage		Heading-flowering stage		Milking stage
Leakage intensity	2 mm/d	4 mm/d	2 mm/d	4 mm/d	2 mm/d	4 mm/d	2 mm/d	4 mm/d
-N (g⋅ha^−2)	134.93	261.84	86.25	208.33	79.35	206.97	185.13	359.58
-N (g⋅ha^−2)	108.6	229.16	49.96	124.16	19.76	42.05	21.27	49.93