在寒冷的季节,为要供给北方市场上新鲜西红柿的需要,北京附近的温室(俗称洞子)里改种西红柿的逐渐增多起来。但冬天,农民在温室里栽培西红柿时曾经遇到些问题,其中最严重的一个就是早期的落花不孕(俗称『崩花』)。有些农家因为头两簇花落得太厉害了,结不了果,无利可图,因而有种了又拔掉的。今年七月北京华北农业科学研究所园艺釆蔬菜研究室召集了郊区农民开番茄优良品种评选会,并邀请 In the cold season, the need to supply fresh tomatoes in the northern market has increased with the conversion of tomatoes to greenhouses (commonly known as dongzi) near Beijing. However, in winter, peasants encountered some problems in cultivating tomatoes in the greenhouses. One of the most serious problems was early infertility (commonly known as “collapsing flowers”). Some farmers because the first two clusters of flowers fell too much, can not bear the fruit, unprofitable, so kind of unplugged. In July this year, North China Institute of Agricultural Sciences, Beijing Institute of Horticulture precocious vegetables convened a suburban farmers to open tomato varieties of fine selection and invitation