采用地膜覆盖进行大白菜制种,能有效地加快种株缓苗进程,促进根、茎、叶、枝、花的发育,提高单株荚数、种子千粒重和产量。种株最佳定植时期为3月18日左右,最好的覆膜方法为贴畦覆膜、破膜定植法。本试验主要研究了地膜覆盖对大白菜种株生长及其种子产量的影响,旨在为生产应用提供参考依据,改变目前小株露地采种产量低而不稳的状况。 Covering the Chinese cabbage with plastic film mulching can effectively speed up the seedling growth process and promote the development of roots, stems, leaves, branches and flowers and improve the pods per plant, the 1000-grain weight and the yield of seeds. Planting the best colonization period is March 18 or so, the best method of laminating lap Tu film, rupture membrane planting method. This experiment mainly studied the effect of plastic film mulching on the growth and seed yield of Chinese cabbage. It aims to provide a reference for production and application and to change the current situation of low and unstable yield in the field.