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作 者 ：肖恕贤; 覃步生; 陈盛球; 李成国; 韦锦秀

期 刊 ：作物学报 1982年 8卷 01期 页码：23-32

关键词：杂；

摘 要 ：本文指出:(1)杂交稻亩产千斤,需要的氮磷钾营养均比常规稻多。由幼穗分化到孕穗期,是杂交水稻一生中吸收养分最多的时期,占总量的50%以上,抽穗后吸收养分已达90%,此后只有谷穗尚需吸收氮和磷,茎秆吸收钾,其它部位均达顶点。生育后期物质转移明显。(2)肥田亩施纯氮15斤,亩产可接近千斤,随着用量增加,增产效益明显下降。相关分

Abstract:The characteristics of fertilizer requirement of hybrid rice and theproper use of fertilizer application technique were studied based on thephysiological indices of NPK in the different parts of plant duringdifferent growing stages under different fertilizer treatment.It wasindicated that more nutri

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