不同播期对赣油杂5号产量及产量结构的影响

Effects of Different Sowing Dates on Yield and Yield Components of Rapeseed Hybrid Ganyouza No.5

进行了不同直播播种期对赣油杂5号产量及产量结构的影响试验。结果表明,随着播期的推迟,赣油杂5号的成熟期推迟,花期和全生育期缩短;一次有效分枝数、单株有效角果数和千粒重逐渐减少;角果长度、角粒数和角粒重表现先增后减;10月15日前播种各处理间产量差异不显著,10月下旬以后播种处理减产显著。因此,赣油杂5号的适播期较长,最适播期为9月下旬至10月上旬。

The field experiment was conducted to study the effects of different direct sowing dates on the yield and yield components of rapeseed hybrid Ganyouza No. 5. The results indicated that： along with the delay of sowing date of Ganyouza No. 5, its mature period postponed, the flowering period and whole growth period shortened; the number of primary effective branches, the total pods per plant and 1000 -grain weight gradually decreased; the pod length, seed number per pod and seed weight per pod increased first and then decreased. The yield had no significant difference among the treatments of sowing before October 15th, while the yield in the treatments of sowing after October 15th reduced significantly. Therefore, the proper sowing date of Ganyouza No. 5 was wide, and the ootimum sowin date was from late Seotember to earlv October.