北京市怀柔区许多蔬菜大棚配上了“氧吧”,大棚蔬菜产量提高350 %,农药用量减少八成,产品质量明显提高。这个区种植蔬菜1 200多hm2,其中蔬菜大棚2000多个。为满足蔬菜对CO2的要求,怀柔区引进了秸秆生物工程技术研究中心研究开发的“四位一体”秸秆反应堆技术。目前,怀柔区在1 0 Huairou District, Beijing, many greenhouses coupled with the “oxygen bar”, greenhouse vegetable production increased by 350%, 80% reduction in the amount of pesticides, product quality improved significantly. This area grows more than 1,200 hm2 vegetables, of which more than 2,000 vegetable greenhouses. In order to meet the requirements of vegetables for CO2, Huairou District introduced the “four in one” straw reactor technology developed by the research center of straw bioengineering technology. Currently, Huairou District is at 10