非参数统计在小麦区域试验中的应用

Application of Nonparametric Statistics in Regional Trial of Wheat Cultivars

用非参数统计量分析了 1 998～ 1 999年度湖北省小麦良种区域试验各品种 (系 )的丰产性、稳定性、适应性和试点的鉴别力。结果表明 :非参数统计分析简单、明确、效果好 ,尤其试点鉴别力指数 (Di)对试点的选取与分布具有重要指导意义 ;在参试品种中 ,鄂麦 1 2、S0 4 8、D40 2丰产性、稳定性、适应性较好 ,在试点选取与分布上 。

Nonparametric statistics were applied to analyse the productivity,stability and adaptability of wheat cultivars and the differentiation of trial sites in Hubei Province wheat regional trial of 1998～1999. It showed that the method was simple and definite.The trial sites differentiation index was of significance in instructing the selection and distribution of trial sites. The cultivars EMai 12,S048 and D402 were better than the others,and the number of trial sites should be increased in the north of Hubei Province.