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为适应北京市密云县农业产业结构调整,筛选出生育期适中、高产的大白菜品种,开展大白菜新品种引进筛选试验。引进秋播早熟组、中晚熟叠抱组、中晚熟直立组大白菜新品种,在防虫不防病的管理条件下进行试验,鉴定各品种的产量、抗性、生育期等性状。秋播早熟组,津秋606:生育期63d,株高34.7cm,开展度69.2cm,叶球叠抱,球高25.7cm;净菜平均667m2产量为6185.5kg,比对照小杂60增产8.21%。中晚熟叠抱组,胶研5869:生育期80d,株高34.1cm,开展度84.4cm;叶球叠抱,球高31.4cm;净菜平均667m2产量为7829.6kg,比对照北京新3号减产4.87%。中晚熟直立组,津秋78:生育期88d,株高54.8cm,开展度93.5cm,叶球舒心,球高50.9cm;净菜平均667m2产量为7527.1kg,比对照津秋75增产34.93%。筛选出了早熟组津秋606、中晚熟叠抱组胶研5869、中晚熟直立组津秋78等适宜北京市密云地区种植的秋播大白菜新品种。
In order to adapt to the adjustment of agricultural industrial structure in Miyun County, Beijing, Chinese cabbage varieties with moderate growth and high yield were screened to introduce and select new varieties of Chinese cabbage. Introducing early sowing early sowing group, medium late sowing sowing group, middle and late-maturing upright group cabbage new varieties, under the management conditions of pest control and disease prevention, identification of the yield, resistance, growth period and other traits. Autumn sowing early maturity group, Tianjin autumn 606: growth period of 63d, height 34.7cm, the degree of 69.2cm, leaf ball stacked hold, the ball 25.7cm; net average yield of 667m2 6185.5kg, compared with the control of small hybrid 60 yield 8.21%. Middle-late-maturity Duanba group, Jiaocheng 5869: growth period of 80d, plant height of 34.1cm, the degree of development 84.4cm; leaf ball stack embrace the ball 31.4cm; net average yield of 667m2 7829.6kg, compared with the control Beijing New 3 yield 4.87 %. The late-maturing upright group, Jinqiu 78: the growth period of 88d, plant height of 54.8cm, the degree of 93.5cm, leaf ball Shuxin, the ball 50.9cm; net average yield of 667m2 7527.1kg, compared with the control Jinqiu 75 yield 34.93%. A new variety of autumn Chinese cabbage planted in Miyun area of Beijing was screened from early maturing group Jinqiu 606, medium late maturing group Jiaocheng 5869, middle late maturing group Jinqiu 78 and so on.