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在适期播种条件下,高产品种首先生育期要适合本地区的无霜期长短,积温大小,以及栽培制度的需要。东北三省是一年一季的春大豆,关内一年多熟地区就须按适应于前槎后播种,及不误后槎作物播期来采用生育期适合的品种了。自北部地区及冷凉山区引入的大豆品种倾向早熟矮小,不易高产;自南部向北部或冷凉地区引入的品种则倾向晚熟高大繁茂,但会因生长期延长致秋霜造成严重减产,或误了后槎的播期,因此,切勿盲目慕名花
Under proper sowing conditions, the first growth period of high-yielding varieties should be suitable for the frost-free period, the accumulated temperature and the cultivation system in this area. The three northeastern provinces are spring soybean of the first season. Within more than one year of customs clearance, the suitable crop varieties should be adopted according to the sowing date after planting and the sowing date of the crops. Soybean cultivars introduced from northern areas and cold and cold mountainous areas tend to be short and precocious, making it difficult to produce high yields. Varieties introduced from the south to the northern or cool areas tend to be tall and luxuriant at late maturity but severely cut or reduced in length due to the prolonged growth period After the sow’s sowing date, therefore, do not blindly admired flowers