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在配制杂交一代种子时,拔除不育系内的有粉株。具体制种技术为:在冷床进行春化育苗,小株种苗通过春化的有利温度是0～7℃,低于O℃,春化效果反而不好,并有冻害危险。幼苗出齐后,白天温度保持22℃,夜间控制在0～4℃。定植前适当放风炼苗。露地定植需与其它白莱品种、小白菜、油菜等制种田隔离约1000米。父母本行比1:4。垄栽行距56厘米,父本株距26厘米,母本株距13厘米,每1000平方米制种田需父本苗1350株,母本苗10650株。在开花前,将母本行中占50％株数的可育株及时拔掉。同是将不育株的主薹摘
In the preparation of hybrid generation of seeds, removal of powdery strains within the sterile line. Specific seed production techniques: nursery nursery in the cold bed, small plant seedlings through the vernal favorable temperature is 0 ~ 7 ℃, less than O ℃, vernalization effect but not good, and there is a danger of frost damage. After the seedlings alike, the temperature during the day to maintain 22 ℃, night control at 0 ~ 4 ℃. Appropriate windbreak before planting colonization. Dew need to be planted with other white cabbage varieties, cabbage, rape and other farming systems isolated about 1,000 meters. Parents than the ratio of 1: 4. Ridge row spacing of 56 cm, 26 cm from the parent plant spacing, the female plant spacing of 13 cm, 1,000 square meters per 1,000 acres of plantation need father seedling 1350, 10650 mother seedlings. Prior to flowering, fertile plants in the maternal line account for 50% of the number of plants in a timely manner unplug. The same is the sterile plant main sedge picked