【摘要】 为了明确冬小麦新品种‘衡6632’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,进行了不同播期和种植密度对该品种产量及其构成因素影响的研究。试验采用裂区设计,设5个播期和6个种植密度处理,于2014—2015年在河北省深州市护驾迟镇旱作节水试验站进行试验。结果表明:(1)播期对单位面积穗数、千粒重及产量有显著影响,但对穗粒数影响不显著;种植密度对产量及其构成因素均有显著影响。(2)产量随着播期的推迟和种植密度增加呈现先升高后降低的趋势。在一定范围内,‘衡6632’单位面积穗数随着播期的推迟而减少,随密度的增加而增加;穗粒数、千粒重随播期的推迟而增加。穗粒数在种植密度300万/hm~2以上时随种植密度增加而减少。千粒重随种植密度的增加而降低。研究分析表明:‘衡6632’在春一水条件下,适宜播期为10月7—19日,最佳播期为10月10—15日,相应的种植密度为225万~300万/hm~2。更多还原

【Abstract】 To clarify high yield and high efficiency cultivation measures of new winter wheat cultivar ‘Heng6632’, and provide a theoretical basis for large-scale application of the cultivar, the authors studied the effects of sowing dates and planting densities on yield and its components. The test was conducted with split-plot design, including 5 sowing dates and 6 planting densities, and was carried out in Dry-farming and Water-saving Experiment Station located at Hujiachi Town Shenzhou City of Hebei Province during 2014-2015. The results showed that:（1） the effect of sowing dates was significant on the number of spike per unit area, 1000-kernel weight and grain yield except kernels per spike, the effect of planting densities was significant on both grain yield and its components;（2） the yield first increased and then decreased with the delay of the sowingdate and the increase of the planting density; the number of spike per unit area decreased with the delay of thesowing date and increased with the increase of planting density in a certain range; the kernels per spike and1000- kernel weight increased with the delay of the sowing date; the kernels per spike decreased with theincrease of planting density when the planting density was above 3000 thousands/hm², the 1000-kernel weight decreased with the increase of planting density. Analysis showed that under 1 irrigation in spring, the suitable sowing date of‘Heng6632’was October 7^th-19^th, the best sowing date was October 10^th-15^th, and its suitable planting density was 2250 thousands-3000 thousands/hm².更多还原