小白菜,北方俗称油菜,南方称青菜,是我国最重要的蔬菜之一。其营养丰富,鲜食、腌渍皆宜,深受广大群众喜爱。从幼苗到成株都能食用,可排开播种分批上市,对蔬菜补缺、满足市场淡季供应,丰富市场花色品种,改善人民生活具有非常重要的作用。小白菜是我国南方大部分地区主要栽培蔬菜之一,但随着小白菜的推广和发展,目前已成为北方重要蔬菜种类之一。由于长期在南方湿润 Chinese cabbage, commonly known as northern rape, southern cabbage, is one of the most important vegetables in our country. Its nutrient-rich, fresh food, pickled suitable, by the masses favorite. From seedlings to adults can eat, can be arranged in batches to be listed in batches, make up for lack of vegetables, to meet the market off-season supply, enrich the market color varieties, improve people’s life has a very important role. Pak Choi is one of the main cultivated vegetables in most parts of southern China, but with the promotion and development of Pak Choi, it has become one of the important vegetable species in the North at present. Due to long-term moist in the south