棚外冰天雪地棚内草莓果实累累在山东莱阳农学院姜卓俊的主持下，我国首次研究出了无加温冬季早熟、半早熟草莓优质高产栽培技术，这一研究成果近期在山东省通过了省级鉴定。近几年来，我国的一些地区冬季大棚保护地由于大部种植单一的黄瓜、西红柿等蔬菜，致使经济效益下... Under the auspices of Jiang Zhuojun of Shandong Laiyang Agronomy College, China first developed the high-yielding and high-yielding cultivation techniques of winter precocious and semi-precocious strawberry in winter, which has passed the provincial appraisal recently in Shandong Province . In recent years, in some areas of our country winter greenhouse protection due to planting a single part of the cucumber, tomatoes and other vegetables, resulting in economic benefits ...