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山东省是大白菜的重要产区,也是大白菜制种的主要基地,大白菜栽培历史悠久,品种资源丰富。其常规的制种是:元月份阳畦育苗,每天揭盖草苫保温保湿至3月份定植于大田,于5月底6月初收获,亩产75～100公斤,费工,投资大,产量一般。经过四年的实验,大白菜小株露地越冬制种取得成功。用该方法制种用工少,投资小,产量高(亩产150～175公斤),收获期比常规方法提前10～15天,为种子销售占领市场争取了时间,同时避开了麦收的大忙季节,具有广阔的应用前景。
Shandong Province is an important producing area of Chinese cabbage, cabbage is also the main base for seed production, Chinese cabbage has a long history of cultivation, rich variety of resources. Its conventional seed production is: January Yang Yang nursery, daily cover Cairn 苫 insulation and moisturizing to the March planting in the field, at the end of May early harvest, 75 to 100 kg per mu, labor, investment, production in general. After four years of experiment, Chinese cabbage plants are successfully planted in winter. The method of seed production with less investment, high yield (150-175 kg per mu), the harvest period than the conventional method of 10 to 15 days in advance, for the seed sales occupied the market for time, while avoiding the busy harvest of wheat ,have a broad vision of application.