小麦品种区域试验精确度及精度分析

Experimental precision and variety comparison precision in wheat regional trials

本文分析了全国小麦区试长江上游组 1998和 1999年 42点次试验的试验精确度和试验精度。结果表明现有的区试试验精确度较高而试验精度不高。研究还表明CEV与RLSDα 值间存在函数关系 ,且RLSDα 与以LSDα 法进行品种间多重比较时的结果是一致的。

To study experimental precision(EP)and variety comparison precision(VCP)in wheat regional trials,data of yield per plot from Changjiang upriver wheat national trial in 1998 and 1999 were analyzed Coefficients of error variation(CEV)indicated EP and relative LSD α(RLSD α)indicated VCP The results were as followings (i) under present wheat experiment conditions,value of EP was more desirable than that of VCP,which was usually lower;(ii)there existed a function relationship between CEV and RLSD α;and(iii)results from RLSD α were consistent with that of LSD α Some questions in wheat regional trials were also discussed in this paper