一、选育经过:“北京18号”冬小麦是北京市农业科学院作物所利用中国农业科学院作物育种栽培研究所一九七一年下放带来的组合,石67—3102×农大45第四代材料继续选育,于一九七五年育成。原代号为“京作348”。二、主要特征特牲:冬性,中熟。长芒、红壳、红粒。穗纺锤形,中等密,籽粒较大,千粒重38—40克,品质较好,口紧,不易落粒。分蘖力中等,多是大分蘖,成穗率中等。抗 First, breeding after: “Beijing No. 18” winter wheat is the Beijing Academy of Agricultural Sciences Crops Institute of Crop Breeding and Cultivation Institute of Chinese Academy of Agricultural Sciences in 1991 brought together a combination of 67-3102 × Nongda 45 fourth On behalf of the material continue breeding, bred in 1975. The original code is “Beijing for 348 ”. Second, the main features Special sacrifice: winter, cooked. Long Man, red shell, red tablets. Spindle spindle shape, medium density, larger grains, grain weight 38-40 grams, better quality, tight mouth, not easy to drop. Medium tillering ability, mostly large tillers, spike rate medium. anti-