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1986—1989年于田间高肥水平下研究了10个冬小麦品种开花前、开花后和成熟时N积累量、生物产量、茎叶N输出量、碳、氮收获指数(HI、NHI)及花后10天旗叶叶N量(N/LA)8个生理性状对籽粒产量、蛋白质含量和蛋白质产量的影响。通过方差、相关和逐步回归等分析表明:各性状品种间差异显著;所有性状均与产量和蛋白质产量呈极显著正相关,与蛋白质含量不相关。性状间除开花前N积累量与NHI及生物产量与HI和NHI不相关外,其他性状彼此之间均呈显著和极显著正相关,花后10天叶N量也与其它7个性状均呈显著和极显著正相关。影响产量和蛋白质产量的主要性状分别为生物产量、HI和生物产量、HI和NHI。初步明确了适合冬小麦产量6000公斤/公顷左右,籽粒蛋白质含量13%以上及蛋白质产量780—800公斤/公顷左右各性状的取值范围。
During the period from 1986 to 1989, the N accumulation, biomass, N output of stems and leaves, carbon and nitrogen harvest index (HI, NHI) and anthesis of 10 winter wheat cultivars before flowering, Effects of 8 Physiological Traits of Flag Leaf N Leaves (N / LA) on Grain Yield, Protein Content and Protein Yield in 10 Days. Analysis by variance, correlation and stepwise regression showed that there was significant difference among all traits. All traits were significantly and positively correlated with yield and protein yield, but not with protein content. There was a significant and highly significant positive correlation between other traits and NHI, biomass and HI and NHI except for N accumulation before flowering. The leaf N content also showed positive correlation with other seven traits 10 days after flowering Significant and very significant positive correlation. The main traits affecting yield and protein yield were biomass, HI and biomass, HI and NHI, respectively. The range of the traits suitable for the winter wheat yield 6000 kg / ha, the grain protein content 13% and the protein yield 780-800 kg / ha were initially identified.