‘Habai No.6’is a new Chinese cabbage F1 hybrid developed by crossing self-incompatible lines‘S521’and‘H25’.It is of compact and erect plant type,and has tight and uniform head.It grows vigorously.Its leaf is green in color with white leafstalk.The head is of oval shape.The single head weight is 3.5-4.5 kg.The net product rate is over 76.0%.It is of medium and late maturity.Its growing period is about 78 days. It can yield about 135 t·hm-2.It is resistant to virus disease and downy mildew.It is suitable for cultivation in Heilongjiang Province as early autumn Chinese cabbage.%哈白6号是利用自交不亲和系 H25和 S521杂交育成的大白菜一代杂种。株型直立紧凑，结球紧实、整齐一致，长势旺盛，叶色绿，叶柄白色，叶球卵圆形，合抱，单个叶球质量3.5～4.5 kg，净菜率76.0%以上。中晚熟，生育期78 d（天）左右，每667 m2平均产量9000 kg 左右，抗病毒病和霜霉病。适宜在黑龙江地区作早秋大白菜种植。
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