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为探明小麦新品种襄麦D31对播期和密度的反应规律,于2015-2016年度在湖北省襄阳市农科院进行了不同播种期和不同播种密度的二因素裂区试验。结果表明,在2015年10月14日至11月8日间,播期对襄麦D31的穗粒数影响不显著,播期因为对有效穗数和千粒重作用显著而对籽粒产量产生显著影响,以10月29日播种的平均产量最高,达7 329.5kg·hm~(-2)。在180万~315万·hm~(-2)范围内,播种密度对千粒重的影响不显著,有效穗数和穗粒数随播种密度的增加分别呈现显著提高和显著下降的趋势;播种密度对籽粒产量影响不显著,以180万·hm~(-2)密度时的产量最大。容重、蛋白质含量、湿面筋含量等品质指标对播期和密度反应趋势不同。综合各项试验结果,为争取产量和品质的协同提高,襄麦D31(2015年)适宜播期为10月24日至11月3日,适宜密度为180万·hm~(-2)左右,以10月29日播种产量和品质最佳。
In order to find out the law of response of new wheat variety Xiangmai D31 to sowing date and density, a two-factor fracturing experiment with different sowing dates and different sowing densities was conducted in Xiangyang Academy of Agricultural Sciences in Hubei Province in 2015-2016. The results showed that sowing date had no significant effect on the grain number per spike of Xiangmai D31 between October 14 and November 8, 2015. The sowing date had a significant effect on the grain yield due to the significant effect on the effective panicle number and 1000-grain weight, The average yield of sown on October 29 was the highest, reaching 7 329.5 kg · hm -2. Within the range of 1.8-3.15 million · hm -2, sowing density had no significant effect on 1000-grain weight, and the effective spikes and grains per spike increased and decreased significantly with the increase of sowing density. The effect of grain yield was not significant, and the yield was the highest when the density was 1.8 million hm -2. Bulk density, protein content, wet gluten content and other quality indicators of sowing date and density of the different trends. Based on the results of the experiments, for the synergistic improvement of yield and quality, the suitable sowing date of Xiang Mai D31 (2015) is from October 24 to November 3, and the suitable density is about 1.8 million hm -2. To October 29 planting the best yield and quality.