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河北省中南部及北京、天津地区,自1976年以来,先后从张家口坝上引种胡麻,面积逐步扩大,1981年种植面积已有10万余亩,一般亩产百斤左右,高者达三百多斤。胡麻的下坝进关,与冀中南、京津广大地区调整作物布局,满足人民食油需要,提供了新路子。胡麻之所以能够下坝进关,向冀中南和京津地区发展,是由胡麻本身的生物学特性及该地的自然条件决定的。
Central and southern Hebei Province, Beijing and Tianjin, since 1976, flax has been introduced from Zhangjiakou Bashang successively and the area has been gradually expanded. In 1981, the area under cultivation was over 100,000 mu, about 100 mu per mu, and the highest was 300 Kg. Flax dam into the off, and Jizhongnan, Beijing and Tianjin vast areas to adjust the crop layout, to meet people’s oil needs, providing a new path. The reason why flax can enter the lower dam and develop in the areas of central Hebei and Beijing and Tianjin is determined by the biological characteristics of flax and the natural conditions of the area.