[Effects of loss-controlled urea on ammonia volatilization, N translocation and utilization efficiency in paddy rice.].

With the common urea split application (CU) as the control, a field experiment was conducted to examine the effects of loss-controlled urea by split application (LCUS) and loss-controlled urea by basal application (LCUB) on ammonia volatilization (NH), nitrogen (N) nutrition status, grain yield and N utilization efficiency in rice plants. The results showed that the ratio of NH volatilization loss to total N application were 15.8%, 13.