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1983～1985年3年田间试验(中高肥水平,包括33个冬小麦品种)研究了粒秆比(G/LC)、氮粒杆比(NG/NLC)、茎叶重(WLC)和茎叶氮(NLC)四个性状对籽粒产量、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说明四个性状品种间差异显著;四个性状均与产量和蛋白质产量显著和极显著正相关;G/LC 与籽粒蛋白质含量显著负相关,而 NG/NLC 与籽粒蛋白质含量不相关;影响产量、蛋白质含量和蛋白质产量的主要性状分别为 G/LC 和 WLC,NG/NLC 和 WLC 以及 NG/NLC;产量对蛋白质含量起负影响,产量和蛋白质含量共同对蛋白质产量起作用。实验证明,花后根系活力和硝酸还原酶活性(NRA)是影响氮素吸收和分配的重要因素。初步明确了适合冬小麦产量5250公斤/公顷以上,蛋白质含量不低于12.5～13%,以及蛋白质产量750公斤/公顷左右的各性状取值范围。
Field experiments (high and medium fertilizer levels, including 33 winter wheat varieties) from 1983 to 1985 were conducted to study the effects of G / LC, NG / NLC, WLC and nitrogen (NLC) four traits on grain yield, protein content and protein yield. The analysis of variance, correlation and stepwise regression showed that there were significant differences among the four traits. The four traits were significantly and positively correlated with yield and protein yield. There was a significant negative correlation between G / LC and grain protein content, while the correlation between NG / NLC and The main traits affecting yield, protein content and protein yield were G / LC and WLC, NG / NLC and WLC and NG / NLC, respectively. The yield had a negative effect on the protein content, and the yield and protein content together affected the protein Yields work. Experiments show that post-flowering root activity and nitrate reductase activity (NRA) is an important factor affecting nitrogen absorption and distribution. The range of traits suitable for the winter wheat yield 5250 kg / ha, the protein content 12.5% ~ 13%, and the protein yield 750 kg / ha were initially identified.