很多人担心反季节蔬菜的安全性问题,其实,从总体来说,反季节蔬菜的营养性和安全性,与当季的时候差别不大。最具有争议的是大棚蔬菜。大棚蔬菜是指在大棚上覆盖塑料薄膜种植出来的菜,可人为控制蔬菜上市季节。由于光照、通风、温度等外部条件不同,大棚蔬菜相对于露天蔬菜来说,其叶绿素、矿物质等的含量略低。不过,这并不是大棚蔬菜最主要的缺点。大棚蔬菜最令 Many people are worried about the safety of anti-seasonal vegetables. In fact, on the whole, the nutrition and safety of anti-seasonal vegetables are not much different from the seasonal ones. The most controversial is the greenhouse vegetables. Greenhouses vegetables are covered in plastic film shed planted on the greenhouse, people can control the vegetable market season. Due to light, ventilation, temperature and other external conditions, greenhouse vegetables relative to open-air vegetables, its content of chlorophyll, minerals and other slightly lower. However, this is not the main disadvantage of greenhouse vegetables. Greenhouse vegetable most