上海地区自七十年代以来,积极推广杂种一代番茄,据不完全统计,目前全市有70%左右面积为杂种番茄,但过去制种在露地进行,由于受到气候条件的限制,种子产量不稳定,特别是多雨年份,产量更低,生产无保障。为了提高杂交种子的产量,降低成本,上海市嘉定县长征公社新村大队种子场,根据保护地番茄生产的启发,认真总结杂交制种的经验和教训,1980年首先试用塑料大棚进行番茄杂交制种,当年就获得较高的产量,以后稳定在25—30斤,而露地制种仅10—15斤。1983年上海 According to incomplete statistics, about 70% of the area is hybrid tomato in the past, but in the past, seed production was carried out in the open field. Due to the climatic conditions, the yield of seeds was not stable, Especially in rainy years, with lower output and no guarantee of production. In order to increase the yield of hybrid seeds and reduce the cost, based on the inspiration from the tomato production in protected areas, the seed lab of Xincun Brigade in Changzheng commune of Jiading County, Shanghai, earnestly sums up the experience and lessons of hybrid seed production. In 1980, the plastic greenhouse was first used for tomato hybrid seed production , Then get a higher yield, after stable at 25-30 pounds, and open-cropping only 10-15 pounds. 1983 Shanghai