小麦区试品种丰产性和稳产性的分析方法

运用回归系数法、高稳系数法、变异系数法和适定性参数法对2002年东北春小麦早熟旱地组区域试验各参试品种(系)的丰产性、稳定性及适应性进行分析比较。结果表明,用这4种分析方法得出的分析结果基本一致,也有局部差异。这4种分析方法各有优缺点。回归系数法由于以r2来反映,用b估测各品种稳定性的误差,所以此方法较为科学可靠。但其计算较为繁琐。其余3种方法较易于计算、直观性较强,但比较粗略。

Analysis Methods on High-Yield and Steady-Yield of Regional Trial Wheat Varieties

Using regression coefficient method, high steady coefficient method, variation coefficient method and adaptable qualitative parameter method, high-yield, steady-yield and adaptability characters of spring wheat varieties of northeast early-maturing group planted on nonirrigated farmland in 2002 were tested. The results indicated that all four methods brought similar results with little differences. The regression coefficient method, expressing the stability with r2 and error with b, is comparatively scientific and reliable. But its calculation is rather convoluted. As to other three methods, calculations are relatively easy, results can be directly perceived through the senses but they are relatively rough.