Effect of N-Management on the Yield of Yanfeng 47,a Super Rice Variety,and Nitrogen Use Efficiency

2007 
The effect of nitrogen management on the yield of Yanfeng 47,a super rice variety,and nitrogen use efficiency was studied.The results showed that the yield from treatment B,the basal fertilizer:tiller fertilizer:panicle fertilizer being 2:5:3(2:5:3),was 731.5 kg/667 m2,higher than those of treatment C(3:4:3),treatment D(3:5:2),and treatment A(2:4:4) by 4.1%,4.8%,and 9.3%,respectively.Meanwhile,the effective panicles and flowers per area,the percentage of dry matter accumulated from heading to maturing to total grain weight,kernel set and nitrogen utilization efficiency obtained in treatment B were more than those of treatment C,treatment D and treatment A.
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