京郊春季蔬菜的传统育苗方式是使用阳畦,改良阳畦和日光温室育苗,这种传统的育苗方式由于设备简陋和受自然环境条件的影响,育出的菜苗苗龄长,质量差,成本高,还往往会遭受冻害或病害造成缺苗。为改变这种落后的育苗方式,前几年科研单位试验成 The traditional nursery mode of spring vegetables in the suburbs of Beijing is to use Yangliu, Yangyang and Yangguang greenhouse to nurture seedlings. Because of the simple equipment and the impact of natural environmental conditions, the traditional nursery seedlings have the advantages of long seedling age, poor quality and high cost, Also often suffer frost damage or diseases caused by lack of seedlings. In order to change this backward nursery, scientific research units a few years ago