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一、天正春白1号 (一)特征特性株高34 cm,开展度为40 cm×40 cm,冬性强,叶球叠抱,矮桩倒锥形。叶色淡绿,自帮,菜净率70%,软叶率为52.4%,单球重2～2.5kg,生长期60～65天。2000年山东省春大白菜区域试验结果,666.7 m~2(亩)产净菜3 293 kg,比对照韩国强春增产47.8%。品质评价得4.6分。高于对照0.8分。田间表现抗病毒病、霜霉病和软腐病,三者的病情指数分别为0.6、0.0、0.8,达到高抗级水平。 (二)栽培要点该品种冬性强,山东地区可于2月下旬至3月上旬进行阳畦育苗。有条件的可在日光温室或小拱棚进行春早熟栽培;一般生产条件下,
A, Tianzheng Chunbai 1 (a) Characteristics of the characteristics of plant height 34 cm, the degree of 40 cm × 40 cm, strong winter, leaf ball stacked embracing, short pile inverted cone. Leaf color light green, self-help, vegetable net rate of 70%, soft leaf rate of 52.4%, single ball weight 2 ~ 2.5kg, the growth period of 60 to 65 days. In the spring of 2000, the regional test results of spring Chinese cabbage in Shandong Province showed that 3 293 kg of pure vegetables 666.7 m ~ 2 (mu) produced 47.8% more yield than that of the control. Quality evaluation of 4.6 points. 0.8 points higher than the control. Field performance of antiviral disease, downy mildew and soft rot disease, the three disease index were 0.6,0.0,0.8, reaching a high level of anti-class. (B) the main points of cultivation The winter is strong, Shandong Province in late February to early March Yang Yang nursery. Conditions can be in the greenhouse or small shed early spring cultivation; general production conditions,