Abstract: For the purpose of application of controlled release nitrogen best dosage, set five treatments, researched on rice controlled release nitrogen cold rice plant growth and yield influence. The results showed that, the growth of controlled release nitrogen treatment improved the rice plant height, tiller number, and T4 treatment (controlled release nitrogen 90%) applied to common urea application. Promote the dry matter accumulation, mature controlled release nitrogen treatment dry matter accumulation and T2 treatment compared with increased by 4.82%-10.78%, compared with T1 treatment increased by 12.45%-18.41%. Controlled release nitrogen treatment yield higher than conventional fertilization treatment, and T4 treatment, the highest yield reached 7944.44 kg/hm2, compared with T2 treatment increased by 7.3%, compared with the T1 treatment increased by 19.0%, the differences were significant. Therefore, from production and agronomic characters analysis, controlled release urea 90% processing is an ideal choice fertilizer use.