蔬菜保护地栽培是周年供应多样化鲜菜的重要途径。其栽培方式有:风障、阳畦、温室、塑料大、中、小棚及地膜覆盖栽培等。北京地区用这些方式生产的蔬菜能从晚秋到初夏供应市场的需要。近十年北京蔬菜保护地栽培面积已发展到44,000多亩,占蔬菜面积的19%,若与国内其它地区比较,也居于领先地位。 Cultivation of vegetables is an important way to supply diversified vegetables on the anniversary. The cultivation methods are: wind barrier, sun 畦, greenhouse, plastic large, medium and small sheds and mulching cultivation. The vegetables produced in these areas in Beijing can be supplied to the market from late autumn to early summer. In the past ten years, the area under cultivation of vegetable reserves in Beijing has grown to 44,000 mu, accounting for 19% of the total vegetable area. If it is compared with other regions in the country, it also occupies the leading position.