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根据 198 2年以来我国部分作物品种区域试验的资料 ,对比研究棉花、小麦、水稻和玉米区试的试验精确度 (EP)和品种比较精确度 (VCP)。结果表明 ,棉花和玉米区试的 EP及一年一点试验的 VCP普遍低于小麦和水稻 ,其试验误差有待降低 ;棉花一点两年试验的 VCP严重不足 ,平均低于 2 5% ;各种作物一年多点试验的 VCP控制得较好 ,其平均均在 10 %以内或左右 ;但多年多点试验的 VCP在不同试验中差别较大 ,其差异主要表现在同一种作物的不同组别间。最后 ,针对区试中存在的精度问题 ,总结提出了提高区试精度的各种途径。
Based on the data of regional trials of some crop varieties in China since 1982, the test accuracy (EP) and the comparative accuracy (VCP) of cotton, wheat, rice and maize were compared. The results showed that the EP of cotton and corn and the VCP of one-point experiment were generally lower than those of wheat and rice, and the experimental error of cotton was still to be reduced. The VCP of cotton one-two years was severely under-average, less than 25% The VCP of more than one year was controlled well, with an average of less than 10% or so; however, the VCP in the multi-year trial differed greatly in different experiments. The difference was mainly between different groups of the same crop . Finally, in view of the precision problems existing in the zone test, various ways to improve the precision of the zone test are summarized.