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为了明确冬小麦杂交种衡杂102的高产高效栽培技术措施,为该品种大面积应用提供理论依据,2014~2015年在河北省农林科学院旱作农业研究所旱作节水试验站进行了不同播期与密度组合的产量试验。采用裂区试验设计,播期设10月5、10、15、20和25日5个水平,密度(基本苗数量)设150万、225万、300万、375万、450万株/hm~2以及对照(石4185)6个处理,研究了不同播期与密度组合对衡杂102产量以及产量构成因素的影响;并对不同播期与密度组合的产量进行了回归分析,根据回归方程,对10月5~25日播种,在10月5日播种基本苗数量150万株/hm~2的基础上,每晚播1 d、基本苗数量增加15万株/hm~2条件下,进行了产量模拟,以探索适宜的播期及其相应的种植密度。结果表明:播种期和种植密度均对产量以及产量构成因素具有显著影响,其中,产量随着播期的推迟、种植密度的增加呈先升高后降低的趋势。在一定的播期和密度范围内,衡杂102单位面积穗数随着播期的推迟而减少,随着密度的增加而明显增多;穗粒数和千粒重随着播期的推迟而增加,随着密度的增加而降低,其中,播期和密度对千粒重的影响大于对穗粒数的影响。冬小麦新品种衡杂102的适宜播种期为10月5~16日,相应的种植密度为150万~315万株/hm~2,产量模拟结果与实际测定结果相吻合。
In order to clarify the high-yielding and efficient cultivation techniques for winter wheat hybrid Hengza 102, this study provided a theoretical basis for the large-scale application of this variety. From 2014 to 2015, Yield test combined with density. The experimental design of split zone was adopted. The sowing date was set at 5 levels on October 5, 10, 15, 20 and 25 and the density (basic seedling number) was 1.5 million, 2.25 million, 3 million, 3.75 million and 4.5 million plants / hm ~ 2 and control (Shi 4185). The effects of different sowing date and planting density on yield and yield components of Hengza 102 were studied. The yield of different sowing date and density combinations was analyzed. According to the regression equation, On October 5 to 25 sowing, the basic seedlings planted on October 5 on the basis of the number of 1.5 million / hm ~ 2, the broadcast every night 1 d, the basic seedling number increased by 150,000 / hm ~ 2 under the conditions Yield simulation to explore the appropriate sowing date and its corresponding planting density. The results showed that both the sowing date and planting density had a significant effect on the yield and yield components. Among them, the yield increased with the sowing date postponed and the planting density first increased and then decreased. In a certain sowing date and density range, the panicle number per unit area of Hengza 102 decreased with the delay of sowing date and increased with the increase of density. The number of grains per panicle and 1000-grain weight increased with the delay of sowing date. With the increase of density, the effect of sowing date and density on 1000-grain weight was greater than that of grains per spike. The suitable sowing date for new winter wheat variety Hesa 102 was October 5 ~ 16, and the corresponding planting density was 1.5 million ~ 3.15 million / hm ~ 2. The simulation results of production coincided with the actual results.