论文部分内容阅读
【目的】探明啤酒大麦氮素积累与转运分配的关系.【方法】以甘肃啤酒大麦‘甘啤5号’‘甘啤6号’和‘甘啤7号’为材料,在施氮量分别为7.5g/m2、15g/m2、22.5g/m2并分区正交试验条件下,研究了大麦茎、叶和穗氮素积累和转运分配模型并进行了回归分析.【结果】施氮量不同,从扬花期到成熟期大麦叶片、茎秆、穗颖以及籽粒中氮含量变化显著.随着施氮量的增加,大麦氮素积累和转运量呈近似直线上升的趋势,但在施氮量超过15g/m2之后,氮素积累和转运趋向饱和.氮素转运贡献率随施氮水平的提高呈二次曲线型变化规律,营养器官对籽粒氮的贡献率在58.23%至64.58%之间.【结论】本试验条件下,甘啤大麦合理施氮量为15.81~16.51g/m2.
【Objective】 The objective of this experiment was to determine the relationship between nitrogen accumulation and translocation and distribution of beer barley. 【Method】 The experiment was carried out with Gansu beer barley ’Ganpi 5’, ’Ganpi 6’ and ’Ganpi 7’ And 7.5g / m2, 15g / m2 and 22.5g / m2 under the orthogonal experimental conditions, the accumulation and translocation models of stems, leaves and ear spikes of barley were studied and the regression analysis was carried out. 【Result】 , And the content of nitrogen in leaves, stems, spikes and grains of barley changed significantly from flowering stage to mature stage.With the increase of nitrogen application rate, the nitrogen accumulation and translocation of barley showed a straight line upward trend, Nitrogen accumulation and transport tended to be saturated after more than 15g / m2.The contribution rate of nitrogen transport showed a quadratic curve with the increase of nitrogen application rate, and the contribution rate of vegetative organs to grain nitrogen ranged from 58.23% to 64.58%. 【Conclusion】 Under the conditions of this experiment, the reasonable nitrogen application rate of Ganpi barley was 15.81 ~ 16.51g / m2.