Study on Precise and Quantitative N Application Technique in Rice

The effect of N management on the yield Yanfeng 47 and nitrogen use efficiency were studied with four treatments,the basal fertilizer:tiller fertilizer:panicle fertilizer being 2:4:4,2:5:3,2:6:2 and 2:8:0,respectively.The results showed that the treatment with the basal fertilizer:tiller fertilizer:panicle fertilizer being 2:5:3 yielded 705.9 kg/667 m2,the highest in all treatments.Meanwhile,the spikelets per unit area,the percentage of dry matter accumulated from heading to maturity to total grain weight,nitrogen utilization efficiency and production efficacy were more than other treatments