Yield and Resource Utilization Efficiency Gap in Early Maturing Japonica Rice Cultivars under Different Management Strategies—A Different Location Investigation

High input costs and poor management options have resulted in a large rice yield gap. Thus, there is need to reduce production improve resource-use efficiency by using new cultivation techniques at different locations. The objective of this study was determine utilization gaps early maturing japonica under four treatments; no nitrogen application (N0), local farmer practice (FP), high-yield, high-efficiency (HYP), super-high-yield (SHY). average yields N0, FP, HYP, SHY were 5012, 7356, 8448, 9629 kg ha−1, respectively. Differences among treatments as: N0 FP (gap 1); HYP 2); 3). Yield 1, 2, 3 2337, 1092, 1181 gap positively associated with panicles per square meter. 14.8% 30.9% higher than that This increase mainly number panicles. For resources, as follows: water-use efficiency, 0.1706, 0.1513, 0.1089 m−3; radiation-use 0.3285%, 0.1780%, 0.0941%; heat-use 1.8685, 1.0339, 0.8798 °C−1 d−1 correlated water, radiation, efficiencies. differences significant between sites. A reduction can ensure sufficient panicle meter, stabilize grain panicle, harvest index biomass. Overall, promising option the cold regions.