论文部分内容阅读
黄淮平原气候温润,土壤肥沃,进行大白菜秋播露地越冬杂交制种具有得天独厚的条件,不仅可以降低生产成本,提高制种产量,还可以提早收获,为种子提前上市争取到了宝贵的时间。黄淮地区大白菜秋播露地越冬杂交制种中应注意几项关键技术。1 隔离区的划定选好制种隔离区是制种成败的首要环节。大白菜
Huanghuai plain climate is warm, fertile soil, winter cabbage seasons exposed to cross hybridization is unique conditions, not only can reduce production costs, increase seed production, you can also harvest early, the seeds ahead of the market to gain valuable time. Huanghuai region cabbage autumn exposed field overwintering hybrid seed production should pay attention to several key technologies. 1 delineation of the isolation zone Seed selection and isolation area is the primary success or failure of seed production. Chinese cabbage