摘要
以10个油菜新组合为材料,在平头期采摘主薹,考察油菜生育期、农艺性状及产量的变化。结果表明:摘薹使油菜生育期推迟、株高降低、分枝起点降低、一次有效分枝数减少,不同材料菜籽产量、每株有效角果数、每角粒数变化趋势差异较大;其中仅Y20A×9-5R、Y20A×95C4R、16750A×95C4R这3个组合摘薹后表现出明显增产。因此,直播条件下推广“油蔬两用”种植模式时应选择中早熟、分枝再生能力强的半冬性甘蓝型油菜品种。
In this experiment,10 new rapeseed combinations were used as materials for the study on changes of growth durations,agronomic traits and yields after picking off main flowering shoots at the level stage(i.e.,the tip of the top 3rd leaf on the flower shoot is at the same height as the flower bud).The results showed that harvesting flower shoots resulted in an extended growth period,lower plant height,reduced effective branch height,and less number of first effective branch;the yield of oilseed,the number of effective pods per plant and the number of seeds per pod varied significantly between different materials.Among the tested,only three combinations,Y20A×9-5R,Y20A×95C4R and 16750A×95C4R,showed obvious yield increase after picking off flower shoots.Therefore,semi-winter Brassica napus varieties with medium or early maturity and strong branch regeneration ability should be selected when popularizing the"oil and vegetable dual-purpose"planting mode under direct seeding conditions.
作者
刘新红
邓力超
周兴
王同华
郭一鸣
曲亮
李莓
LIU Xin-hong;DENG Li-chao;ZHOU Xing;WANG Tong-hua;GUO Yi-ming;QU Liang;LI Mei(Crop Research Institute of Hunan Province,Hybrid Rape Research Center of Hunan,Changsha 410125,PRC)
出处
《湖南农业科学》
2021年第10期6-8,15,共4页
Hunan Agricultural Sciences
基金
湖南省农业科技创新资金项目(2020CX28)
现代农业产业技术体系建设专项(CARS-12)
长沙市科技计划项目(kq1907051)
湖南省油菜产业技术体系(2021)。
关键词
油菜
摘薹
直播
产量
rapeseed
flower shoot harvesting
direct seeding
yield
