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利用产量不同、蛋白质含量不同和加工品质各异的３个春小麦品种，研究了灌浆过程中干物质积累分配和氮素同化运转与产量和蛋白质含量的关系．结果表明，干物质的积累量，品种间存在明显差异，高产低蛋白品种和干物质产量高于低产高蛋白类型，高产高蛋白类型积累量最高；营养体的氮素积累变化动态．因向籽粒中转运量的不同而异．各营养体对籽粒氮的贡献顺序为茎（含叶鞘）＞叶片＞穗轴和颖片；品种间开花前后的氮素同化量不同，高蛋白品种倾向于花前同化量多，高产品种花后同化量比例相对增加，高产高蛋白类型两者兼之，品种间花后氮素同化量占总同化量的变幅为１５．３５％～４８．３５％；生育期干物质产量高是高产高蛋白品种的重要物质基础，氮素总同化量与蛋白质含量关系不大，氮素转运效率与蛋白质含量密切相关．ＮＨＩ：ＧＨＩ比例决定着蛋白质含量．
Three spring wheat varieties with different yield, different protein content and different processing quality were used to study the relationship between dry matter accumulation and distribution, nitrogen assimilation and yield and protein content during grain filling. The results showed that there was a significant difference in dry matter accumulation and yield among varieties. High-yield and low-protein varieties and dry matter yield were higher than low-yield and high-protein types, and high-yield and high-protein types had the highest accumulation. Due to the transfer of grain varies. The order of contribution of nutrients to grain nitrogen was stem (including leaf sheath)> leaf> cob and glume; nitrogen assimilation before and after flowering was different among cultivars, high protein cultivars tended to preimplantation, The proportion of assimilation increased, and the high yield and high protein type both, the amount of nitrogen assimilation after anthesis took up 15.35% ~ 48.35% of the total assimilation amount. The high dry matter yield The important material basis of cultivars, the total amount of nitrogen assimilation and protein content is not related to nitrogen transport efficiency and protein content are closely related. NHI: GHI ratio determines the protein content.