安徽农业科学2016，Vol.44Issue(17)：30-32,100,4.
播期和种植密度对冬小麦新品种衡4399产量及其构成因素影响
Effects of Sowing Dates and Planting Densities on Yield and Yield Components of Winter Wheat New Cultivar Heng4399
摘要
Abstract
Objective] To clarify the high-yield and efficient cultivation technical measures of winter wheat new cultivar Heng4399, and to provide theoretical basis for large-scale application of the cultivar.[ Method] Split plot design was used to carry out treatments of seven sowing periods and six planting densities.Effects of sowing dates and planting densities on the yield and yield components of cultivar Heng4399 were researched in in Dry-farming and Water-saving Experiment Station located at Hujiachi Town in Shenzhou City of Hebei Province during 2008-2009.[Result] Sowing date had significant effects on the number of spikes per unit area, 1 000-kernel weight and grain yield, but showed no significant effects on kernels per spike.Planting density had significant effects on both yield and yield components.With the delay of sowing date and the increase of planting density, yield firstly enhanced and then reduced.Within a certain range, the number of spikes per unit area reduced as the sowing date delayed, and increased as the planting density enhanced.Kernels per spike was less affected by sowing date and planting density.1 000-kernel weight increased as the sowing date delayed, but declined as the planting density increased.[Conclusion] Through the regression equation simulation calculation, it is recommended that the suitable sowing date of Heng4399 is October 6-21, and its reasonable basic planting density is 2 100 thousand-3 600 thousand plants/hm2 .关键词
冬小麦/衡4399/播期/种植密度/产量/产量构成因素Key words
Winter wheat/Heng4399/Sowing date/Planting density/Yield/Yield component factor分类
农业科技引用本文复制引用
李丁,魏建伟,乔文臣,孟祥海,李强,赵明辉,李会敏,孙书娈,赵凤梧..播期和种植密度对冬小麦新品种衡4399产量及其构成因素影响[J].安徽农业科学,2016,44(17):30-32,100,4.基金项目
农业部国家小麦产业技术体系（ CARS－3－2－3）；河北省小麦产业技术体系“小麦创新团队”（2013－2017）；河北省农业科技成果转化（14826329 D ）；科技部国际合作专项（2012DFG32030）资助项目。 （）
