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夏大白菜在整个生长阶段都处在高温多雨季节,要求条件较高。为了达到稳产高效,需掌握以下栽培技术。一、选用耐热抗病品种夏大白菜要求至少在35℃条件下能正常结球,并抗软腐病和烧心病。山东省农科院大白菜良种服务中心育成的夏白45、超级夏王、夏白50等夏季专用品种,均能在35～38℃高温下结球紧实,且抗病早熟,是我国夏季大白菜生产的首选品种。夏白45:生育期40～45天,单球重0.7～0.9 kg,叠抱圆球形,白帮,叶面少毛,结球紧实。超级夏王:生育期48～50天,矮桩叠抱,淡白帮,叶皱无毛,单球净菜重0.8～1 kg,结球紧实。夏白50:生育期50～55天,净菜率高,单球重1.2～1.5 kg,中桩叠抱,白绿帮,叶无
Summer cabbage throughout the growing stage are in hot and rainy season, demanding higher conditions. In order to achieve stable and efficient production, need to master the following cultivation techniques. First, the selection of heat-resistant varieties of summer cabbage requirements at least under the conditions of 35 ℃ can be a normal ball, and anti-soft rot and heartburn. Shandong Academy of Agricultural Sciences, Chinese cabbage seed service centers bred summer white 45, Super Xiawang, summer 50 and other summer special varieties, can be 35 ~ 38 ℃ high temperature knot tight, and disease-resistant early summer is my summer Chinese cabbage production of the preferred species. Xia Bai 45: The growth period of 40 to 45 days, single ball weight 0.7 ~ 0.9 kg, stacked round spherical, white ganglion, leaf hair, tight knot. Super Xiawang: Growth period of 48 to 50 days, a small pile of stacked embrace, pale white, leaf follicles glabrous, single ball net weight 0.8 ~ 1 kg, the ball tight. Summer white 50: 50 to 55 days of growth period, the net food rate is high, single ball weight 1.2 ~ 1.5 kg, stacked in the pile, white and green help, leaves no