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作 者 ：王维金

期 刊 ：作物学报 1994年 20卷 04期 页码：476-480

关键词：籼稻品种；施肥时期；15N-标记尿素；氮肥吸收率；

Keywords:Indica rice variety, Dressing period, 15N-labeled urea, Uptake ratio on 15N fertilizer,

摘 要 ：氮肥吸收率随不同水稻品种产量水平的提高而提高。稻株对氮肥的吸收率在分蘖期各品种之间差异不显著，而在灌浆成熟期表现其显著差异，即矮秆水稻品种和杂交稻对氮肥的吸收利用率高于高秆水稻品种。杂交稻汕优63，稻株对穗肥15N的吸收收率明显高于基肥15N和分蘖肥15N。杂交稻汕优63在抽穗后20天，有50%或50%以上被吸收的15N转

Abstract:The experimental results are as follows: 1. The uptake ratio of 15N fertilizer increases with the increase in the yields of different rice varieties. The differences in the uptake ration of 15N fertilizer of rice are not distinct from one variety to another at the stage of tillering , but the diffe

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