襄阳引种油菜新品种“青杂7号”的分析与评价

Analysis and Evaluation of Introduced Rape New Variety "Qingza No.7" in Xiangyang

以当地主栽油菜品种华油杂9号为对照,采用两种氮素水平处理,在湖北省襄阳地区引种特早熟春油菜新品种"青杂7号",结果表明:该品种在襄阳地区全生育期较华油杂9号要短,其各个生育时期明显提前;两种氮素水平处理下的产量均不及华油杂9号,角果数、每角粒数低于对照,千粒重高于对照。虽然青杂7号的产量比当地主栽品种低,但是其抽薹期提前,品质优,可以作为菜薹专用品种在湖北省襄阳地区种植。

A new early-mature spring rape variety ＂Qingza No.7＂ was introduced into Xiangyang area of Hubei province.Taking the local mainly-cultivated rape variety ＂Huayouza No.9＂ as the control,the characteristics of ＂Qingza No.7＂ were studied at two different nitrogen application levels.Results indicated that the whole growth and developmental duration of ＂Qingza No.7＂ was shorter than that of ＂Huayouza No.9＂,and the each growth stage of the former was obviously earlier than that of the latter.At two different levels of nitrogen application,＂Qingza No.7＂ had lower rapeseed yield,lower number of siliques per unit area and number of seeds per silique,and higher kilo-kernel weight than the control variety ＂Huayouza No.9＂.Although the rapeseed yield of the introduced ＂Qingza No.7＂ was lower than that of the local mainly-cultivated variety,＂Qingza No.7＂ had earlier bolting stage and better tender-stem quality than the control,so this variety could be planted as the special rape variety for the harvest of tender-stem in Xiangyang area.