冬季育苗是确保春菜高产稳产的关键。重点应抓好以下四点: 1.苗床的修建要选择背风向阳、地势高燥、排灌性好、土壤肥沃的地块,于大雪节前修建苗床(瓜类苗床要在立春土壤解冻后修建)。一般苗床长10～13.3米,宽1.3～1.5米,北侧建一道高0.5～0.6米、厚0.4米的防风墙,南侧筑成高17～20厘米的斜坡土埂。苗床修好后,床内要换成葱蒜地土壤(因它能防止 Winter seedling is to ensure that the key to high and stable yield of spring vegetables. The key points should be focused on the following four points: 1. The construction of seedbed to choose leeward sunny, high dry, drainage and fertility, fertile soil plots, before the snow festival to build seedbed (melon seedbed in the spring soil thaw after the construction) . The general seedbed length of 10 ~ 13.3 meters, 1.3 to 1.5 meters wide, north to build a 0.5 to 0.6 meters high, 0.4 meters thick wind wall, built south of the high 17 to 20 cm of slope soil 埂. After the seedbed is repaired, the soil in the bed should be replaced by onion and garlic (because it prevents it)