常规的洋葱留种方法是用大鳞茎（商品鳞茎）作种株，第一年播种，第三年才能收到种子，还需经约１２０天的大鳞茎贮藏期（以下简称母株留种法），繁种周期长、成本高，为解决这一问题，青岛市农科所于１９８１～１９８７年进行了小株留种研究，取得了初步结果。此法经青岛市沧 Conventional methods of onion inoculation are the use of bulbs (commercial bulbs) as seed plants. Seeds can be planted in the first year and seeds can be received in the third year. After the bulbs are stored for about 120 days, ), A long period of breeding, high cost, in order to solve this problem, Qingdao Institute of Agricultural Sciences in 1981 to 1987 to study the small-seed stay, and achieved initial results. This method by the city of Qingdao Cang