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高抗45 是一个高产、稳产的极早生、抗热大白菜新品种,由从国外引进的早熟不亲和系与自育的极早熟不亲和系组配而成。叶球呈高圆球形,叠抱结实,叶光滑无毛,质脆柔嫩,商品性好。抗热、耐高温,抗病性极强。24—25℃可播种,45天即可收获2公斤以上的叶球,亩产4000—5000公斤。鲁光18号是晚熟优良一代交配种,极抗病,优质且高产。外叶8—10片绿色(白帮),叶面较皱,刺毛疏软,球叶叠抱,白色微黄,叶球重8—10公斤,净菜率78％,亩产1.25—1.5万公斤。24—25℃时播种,适宜生长期90天。抗热耐湿性强,高抗霜霉病、软腐病、白斑病及无嵌纹病毒,综合发病指数0.1％以下、生长旺盛迅速,结球紧实,球形美观。1989年参加区试,抗病性显著优于山东四号、鲁白八号、83—24,增产17.58％—73.28％,1990年在
High resistance 45 is a high yield and stable production of very early, hot new Chinese cabbage, introduced from abroad by the precocious incompatible system and self-cultivation of very precocious incompatible system. Leaves were tall spherical shape, stacked embrace strong, smooth leaves glabrous, crisp and soft, good merchandise. Heat, high temperature, strong disease resistance. 24-25 ℃ sowing, 45 days to harvest more than 2 kg of leaf balls, mu produce 4000-5000 kg. Lu Guang on the 18th is a good generation of late-maturing mating varieties, very disease-resistant, high quality and high yield. Outer leaves 8-10 pieces of green (white), foliage more crumpled, bristle sparse soft, spherical leaves stacked hold, white yellowish, leaf weight 8-10 kg, net food rate of 78%, per mu 125-1.5 million kg. 24-25 ℃ sowing, suitable growth period of 90 days. Strong resistance to heat and humidity, downy mildew resistance, soft rot, vitiligo and no mosaic virus, the overall incidence of less than 0.1%, rapid growth, tight knot, spherical beautiful. In 1989 to participate in the district test, the disease resistance was significantly better than Shandong No. 4, Lu Bai 8, 83-24, an increase of 17.58% - 73.28% in 1990