灰色系统理论对旱地小麦品种(系)的综合评价

运用灰色系统理论的关联分析法 ,对 2 0 0 1～ 2 0 0 2年国家北部冬麦区旱地区试结果进行了分析。结果表明 :不同气候年型下主要性状对产量的关联度不尽相同 ,一般旱年为 :最高茎数 >穗粒数 >公顷穗数 ;丰水年为 :千粒重 >最高茎数 >容重。参试品种 (系 )中 ,2 0 0 1年以长 6878表现最好 ,其次为对照西峰 2 0号 ;2 0 0 2年仍以长 6878表现最好 ,其次为晋太 170 ,说明在不同年型中 ,长 6878均表现旱作高产、综合性状好、适应性强等优点 ,适于在北部冬麦区广大旱地推广种植。

Application of Grey System Theory in Dry Field Wheat Breeding and Popularization

By means of grey system theory, the 2001～2002’s data from the winter wheat regional test of northern China for dry field wheat varieties were analyzed. The results showed that the order of relational grades of important characters to yield in different climate were different. The order in common year was: number of maximal tillers>grains per panicle>number of panicles/hm 2. The order in harvesting year was:1?000-grain weight>number of maximal tillers>unit weight. In 2001, Chang 6878 was the best one,the next was Xifeng 20. In 2002,Chang 6878 was the best one,the next was Jintai 170. The results indicated that Chang 6878 showed drought resistance and high yield, good complex characters, strong adaptability in different year, It was fitted in dry field in country.