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黑龙江省是我国大豆重点产区,然而在其北部高寒山区(≥10℃积温低于1900°地区)原来一直不能种植大豆。近年来为了改变山区种植业结构,改善人民食物构成,开始试种一些与早熟品种(如北呼豆等),但是由于这些品种经常遭到早霜冷害,产量不高不稳,因此当地迫切需要采用超早熟大豆品种,以克服当地积温不足对大豆生产的限制,减少低温冷害的危害。
Heilongjiang Province is a key soybean producing area in China. However, in the northern cold mountainous areas (≥10 ℃ accumulated temperature less than 1900 °), it has been impossible to grow soybean. In recent years, in order to change the planting structure of mountainous areas and improve the food composition of the people, some early-maturing varieties (such as Beixiaodou etc.) have been started to be planted. However, due to their frequent cold frost damage and low yield, these products are urgently needed Ultra-precocious soybean varieties, in order to overcome the lack of local accumulated temperature limitations on soybean production, reduce the risk of chilling damage.