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一、小麦河北省昌平县果沙屯村1981年繁殖“京花1号”小麦4.04亩,每亩播量1.73斤,基本苗1.4万头,平均亩产595.5斤,繁殖系数344.2倍。江苏省农科院用小麦新品系“7302”(后定名“宁麦4号”)种子1斤,在南京栖霞山夏繁,广东秋繁,黑龙江春繁,一年三代繁殖种子5600斤,繁殖系数5600倍。据报导,墨西哥的国际玉米、小麦改良中心,法国学者 N·F 诺曼笛,用小麦新品系4两种子,在1年的时间内,繁殖三代,获得
First, wheat Changping County, Hebei Province, fruit sand village in 1981 breeding “Beijing flower” 4.04 acres of wheat, sown per acre 1.73 kg, 14,000 basic seedlings, the average yield of 595.5 pounds, the breeding coefficient of 344.2 times. Jiangsu Provincial Academy of Agricultural Sciences with a new line of wheat “7302” (after the “Ningmai 4”) seeds 1 kg, in Nanjing Qixiashanxiafan, Guangdong autumn Fan, Heilongjiang Chunfan, breeding three generations a year 5600 pounds, breeding coefficient 5600 times. It has been reported that Mexico’s International Center for Maize and Wheat Improvement and French scholar N. F. Normandie have been bred for three generations with four seeds of the new wheat line 4 over a period of one year.