一、贮前准备。冬贮的大白菜应选择叶色绿、含水量低、生长期长的中晚熟品种,并适时晚收。收获时应避免机械损伤,并别掉病残株。收获后的白菜应在天气晴朗的白天晾晒5-7天,使菜株降温和蒸发水气,避免初期脱帮烂窖,但应防止霜冻的危害。 二、贮藏。大白菜的贮藏可选用以下方法: 1.窄沟埋藏法:白菜收获前在便于取用的地方,挖南北走向,深40～ First, storage preparation. Winter storage cabbage should choose leaf color green, low water content, long-term growth of late-maturing varieties, and late harvest late. Harvest should avoid mechanical damage, and do not diseased stubble. Cabbage after harvest should be sunny in the daytime drying 5-7 days, so that the plants cool and evaporate the water, to avoid the initial removal of the pit, but should prevent the hazards of frost. Second, storage. The storage of Chinese cabbage can use the following methods: 1. Narrow furrow method: cabbage before harvest in easy access, dig north and south, deep 40 ~