北京837是本所1978年利用78—5189(有芒红7号×洛夫林10)作母本,31770A(双6/山前//双3)作父本,进行有性杂交,采用系谱法,经过连续7年精心培育选择而成。一、主要特征特性冬性、中熟。长芒、白壳,粒色浅红(琥珀色),穗纺锤至长方型,穗大、粒多,千粒重43克左右,籽粒容重811克/升,粗蛋白含量13.72%,湿面筋含量35.2%。幼苗半匍匐,生长茁壮,分蘖多,速度快,成穗较多。株高85～90厘米,秆韧,抗倒伏,抗寒 Beijing 837 was the parental line of 78-5189 (with Mangosin 7 × Lovrin 10) and 31770A (double 6 / piedmont / double 3) as the male parent in 1978, Act, after seven consecutive years carefully cultivated choice made. First, the main characteristics of winter, cooked. Long amber, white shell, granular light red (amber), spike spindle to rectangular, spike large, more than grain weight, grain weight of about 43 grams, grain weight 811 g / l, crude protein content of 13.72%, wet gluten content 35.2 %. Seedlings semi-prostrate, grow robust, more tillers, faster, more spike. Plant height 85 ~ 90 cm, stalk tough, lodging, cold