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为了明确冀南麦区冬小麦品种邯麦14号的适宜播期和密度,采用裂区试验设计,以播种期为主区、种植密度为副区,研究了不同播期(10月10日、15日和20日)和密度(270万株/hm2、345万株/hm2、420万株/hm2和495万株/hm2)对小麦产量及其构成因素的影响。结果表明:播期对穗粒数和千粒重影响较小,对单位面积穗数和产量影响极显著;密度对产量及其构成因素均有显著影响;播期与密度互作对产量和单位面积穗数均有显著影响。通径分析结果显示,在不同播种期和种植密度条件下,单位面积穗数对产量的直接贡献最大,其次是穗粒数,千粒重对产量的直接贡献最小。本研究条件下,邯麦14号的适宜播种期为10月10~15日、基本苗密度为345万~420万株/hm2。
In order to clarify the suitable sowing date and density of winter wheat variety Hanmai 14 in Hebei wheat area, the split plot design was adopted to study the effects of different sowing dates (October 10, 15 Day and 20 days) and density (2.7 million / hm23.4 million / hm2.42 million / hm2 and 4.95 million / hm2) on wheat yield and its components. The results showed that sowing date had little effect on the number of grains per spike and 1000-grain weight, and had a significant effect on the number of spike and yield per unit area. The density had a significant effect on the yield and its components. Have a significant impact. Path analysis showed that under different sowing dates and planting densities, the ear number per unit area had the largest direct contribution to the yield, followed by the grain number per spike, and the direct contribution of 1000-grain weight to yield was minimal. Under the conditions of this study, the suitable sowing date of Handmai 14 was October 10-15, and the basic seedling density was 3.45 ~ 4.2 million plants / hm2.