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一、伤热关。大白菜收获时,外界气温和菜体温度都较高,菜体本身的含水量也较高,呼吸旺盛,易受热脱帮甚至腐烂。因此,在大白菜入窖(12月上旬)这段时间,要以通风降温和排湿为主。此时要昼夜打开门窗、气窗,调节窖内温、湿度,使窖内温度保持在0～3℃,湿度保持在80%～85%,每隔3～5天倒一次菜,连倒3次后,随着外界和窖内温度、湿度的降低,可将倒菜时间延长至6～10天,倒菜时要尽量保持帮叶,只把烂帮、烂叶掰掉或摘除。
First, the heat off. Chinese cabbage harvest, the outside temperature and vegetable body temperature are higher, body water content is also higher, strong breathing, easy to help remove or even decay. Therefore, in the cabbage into the pit (early December) during this time, to ventilation and humidity-based. This time to open the doors and windows at night and day, transom, adjust the temperature and humidity inside the cellar, the temperature in the cellar maintained at 0 ~ 3 ℃, humidity maintained at 80% ~ 85%, every 3 to 5 days down a dish, and even down 3 times After, with the outside world and the cellar temperature, humidity decreased, the time can be extended to 6 to 10 days, when trying to keep the leaves to help leaf, rotten to help, rotten leaves off or removed.