Nutrient Management Strategies for Chongqing

The balanced fertilizer treatment with 128-90-90-6.4 kg N-P2O5-K2O-Zn/ha increased rice yield by 1080 kg/ha (20.7%) and 1725 kg/ha (30.2%) over farmer’s practice (K0) in Liangping county and Jiangjing county, respectively. The contents of crude proteins and total amino acids were 89.2 g/kg and 26.1 g/kg in the grains of balanced fertilizer treatments, 24.7g/kg and 7.9 g/kg higher than that in the K0 treatment, respectively. This can be applicable to 804 thousand ha of rice land in Chongqing district. The estimated potential for increased K2O use per year on rice can reach to 15 thousand tons (by 15% of increase per year). CHONGQUING-NMS05