高旱寒地区冬油菜越冬研究初报

【目的】研究冬油菜在高寒地区最佳适宜播种期,实现阿勒泰地区农作物多熟制。【方法】采用随机区组试验,研究不同播种期对冬油菜越冬、生育期、农艺性状及产量的影响。【结果】不同播种期对冬油菜越冬率、生育期影响差异不显著;株高、分枝部位、一次分枝、二次分枝、主序有效长度、有效角果数、单株产量均随着播期的推迟而呈现减小的趋势。不同播期株高、主序有效长度、有效角果数、角果长度和单株产量指标达到显著水平。不同播种期冬油菜产量存在差异。【结论】9月5日为阿勒泰地区冬油菜最佳播种期,其越冬率高,生育期短,产量高。

Overwintering Study Report of Winter Rapeseed in High Dry Winter Cold Region

【Objective】The optimal sowing date of winter rapeseed in high drought and cold area was tested so as to realize crop multiple mature system in Altay.【Method】 In the field test with random block design,the influences of different sowing date on the overwintering survival rate,growth period,agronomic characters and yield component factors of winter rapes were studied.【Result】The result showed that there wasn't any difference of overwintering survival rate in different dates of sowing.Plant height,branch height,first branch number,second branch number,main florescence length,plant siliquae,yield per plant correspondingly decreased along with the sowing date delaying.In different sowing dates,there were significantly positive correlation with plant height,main florescence length,plant siliquae and yield per plant.There was difference of yields in different dates of sowing.【Conclusion】The suitable sowing date of winter rapeseed was on Sep.5th in Altay area,because its overwintering rate of the crop is high,growth period is short,and the yield is comparatively high.