采用模糊评判法对新组合的性状综合评价

Comprehensive Evaluation on the Characters of Some New Combinations by Fuzzy Judgement

杂交水稻通过区域试验后，产量差异很明确。但各组合的主要经济性状，如有效穗、生育期、穗粒数、千粒重、结实率和抗性等这些对应性状组合间各不一样，也很不直观。针对这个问题，本文采用模糊评判法，对江西省１９９５年杂交晚稻区域试验的增产组合，进行综合性状的评价。产量高于ＣＫ的６个新组合，主要经济性状的综合评价都优于ＣＫ（汕优桂３３）。这些组合排序分别是协优７７９１、协优１６６６、优ⅠⅤ２、新优７５２、优Ⅰ４６５、Ⅱ优４６等。对照汕优桂３３排第７位，综合性状最差。分析结果表明新组合产量高，且综合性状好。

The yield difference of hybrid rice varieties is obvious in regional tests, but their main economic traits of combinations, such as productive panicles, growth duration, prains per panicle, 1000-grain weight, setting rate, and resistance, are difficult to be distinguished. In order to solve this prollem, fuzzy judgement was employed to evaluate the characters of the combinations that gave higher yields in the late hybrid rice regional test of Jiangxi province in 1995. The results showed that the main economic traits of 6 new combinations that gave higher yields than the control variety were advantageous overthose of the control variety Xianyougui 33. The order was Xieyou 7791, Xieyou 166, You Ⅳ 2, Xiuyou 752, YouⅠ465, Ⅱyou 46, and Xianyougui 33. Analysis showed that the new combinations were high in yield, good in comprehensive traits, and worth being commercialized.