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金秋时节,山东省农科院东营分院农艺师徐德芳历时3年精心培育的早稻新品种获得丰收。经测算,较目前早稻品种297增产一倍以上,亩产600～650公斤,标志着中国旱稻育种取得突破性进展,从而解决了困扰世界各地多年的矮杆旱稻育种难的难题。2003年,徐德芳利用中国农业大学提供的30多份祖系材料,从高杆品系33～1中发现一株矮杆变异品系,从中选育了一批9个品系,均
Autumn season, Shandong Academy of Agricultural Sciences Dongying Branch of agronomist Xu Defang lasted for 3 years carefully cultivated new varieties of early rice to get a bumper harvest. It has been estimated that more than double the output of early-season rice varieties 297 and 600-650 kg per mu have marked a breakthrough in breeding upland rice in China, thus solving the difficult problem of dwarf-barren and uprooted rice which has plagued many years in the world. In 2003, using more than 30 ancestral materials provided by China Agricultural University, Xu Defang found a dwarf bar mutant line from the high-stem lines 33 to 1 and selected a group of 9 strains