‘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.