冬季阳光不很强烈,再加上棚菜有棚膜覆盖,棚内光照会受到一定程度的影响,这样对蔬菜生长造成不利,采用以下方法,可使棚内蔬菜多补光照,对蔬菜生长有利,增产增收。1.采用机械卷帘:冬季采用机械卷帘,不仅可以节省人力,降低劳动强度,而且可以明显缩短揭、盖草帘(或 Winter sunshine is not very strong, coupled with greenhouse covered shed film shed shed light will be affected to some extent, so adverse to the growth of vegetables, the following methods can make greenhouse shed more light, good for vegetable growth, Increase production and income. 1. The use of mechanical roller shutter: the use of mechanical roller shutter in winter, not only can save manpower, reduce labor intensity, and can significantly shorten the exposure, cover straw curtain (or