摘要
探讨了氮肥运筹对超级稻盐丰47产量及氮素利用率的影响,结果表明:基蘖肥与穗肥比例为2:5:3的B处理,获得了产量731.5kg/667m2,分别比C(3:4:3)、D(3:5:2)、A(2:4:4)处理增产了4.1%、4.8%、9.3%。同时表现为B处理的单位面积有效穗数、颖花数、抽穗至成熟期干物质积累量占产量的百分比及结实率、氮素利用率均高于C、D、A处理。
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 m^2, 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.
出处
《北方水稻》
CAS
2007年第5期40-43,共4页
North Rice
关键词
超级稻
氮肥运筹
产量
100
kg籽粒吸氮量
氮素利用率
Super rice
N-management
Yield
Assimilate nitrogen per 100 kg of grain
Nitrogen utilization efficiency