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选用2003—2009年我国4个麦区、233个品种(系)、82个试点组成的全国旱地冬春小麦区域试验产量资料,研究了我国旱地小麦国家区域试验点的精确度、环境鉴别力和代表性,并对试验环境进行综合评价.结果表明:一年一点试验平均试验误差变异系数(CV)为6.1%,平均相对最小显著差数(RLSD)为10.5%,一年多点试验的CV值均在8.2%以内,大多数试点的CV和RLSD控制得较好,试验精确度和品种比较精确度均较高.试点分辨力以西北春小麦组最强,其他3个产区差别不大.试点代表性以东北春小麦组最好、西北春小麦组最差.在综合考虑试点分辨力和代表性基础上,借助GGE模型构建环境综合评价参数(r g h),结果显示,我国旱地小麦理想试点比例只有32.4%,产区间比较,理想试点的比例依次为:西北春小麦旱地组(40.9%)>东北春小麦旱地组(33.3%)>黄淮冬小麦旱地组(30.4%)>北部冬小麦旱地组(21.4%).
Based on the data of regional trial production of winter wheat in dryland of China, which consists of 4 wheat regions, 233 varieties (lines) and 82 pilot sites in China from 2003 to 2009, the precision, environmental discriminant power, (CV) was 6.1%, the average relative minimum significant difference (RLSD) was 10.5%. The CV of one-year multi-point trial The values of CV and RLSD were well controlled in most of the pilot sites, and the experimental precision and breed accuracy were all higher than those in the pilot stations. The pilot resolution was the strongest in the northwest spring wheat and the other three areas were not significantly different. The representative of the pilot was the best in the spring wheat in the northeast and the spring wheat in the northwest was the worst.On the basis of comprehensively considering the resolution and representativeness of the pilot, the environmental comprehensive evaluation parameters (rgh) were constructed by GGE model. 32.4%, and the ideal pilot areas were as follows: Northwest spring wheat dry land group (40.9%)> Northeastern spring wheat dry land group (33.3%)> Huanghuai winter wheat dry land group (30.4%)> Northern winter wheat dry land group (21.4% ).