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以黄淮海夏播玉米区2002～2009年区试数据为依据,分析实体对照的局限性,将参试品种平均值作为对照与实体对照进行比较。结果表明,玉米品种区试中采用参试品种平均值作为对照是可行的。采用平均值作对照的同时可在区域试验中加入本区或当地大田表现较好的品种作为参照,有利于考察参试品种对环境的实际适应能力。在区域试验中可采用平均值作对照,但生产试验和预备试验中一般不宜采取平均值作对照,应用实体对照。选拔标准一般可参照现行的审定标准,但不同生态区域和组别有所不同,需要综合考虑各区情况。
Based on the data from 2002 to 2009 of summer-sowing corn area in Huang-Huai-Hai region, the limitations of entity control were analyzed, and the average value of the tested varieties was compared as a control and entity control. The results showed that it is feasible to use the average of the tested varieties as a control in the field trials of maize varieties. Using the average value as the reference, we can add the better performing varieties in the region or the local field as reference in the regional experiment, which is beneficial to examine the practical adaptability of the tested varieties to the environment. In the regional test may use the average as a control, but the production test and preliminary test generally should not take the average as a control, the use of physical control. Selection criteria generally can refer to the current validation standards, but different ecological regions and groups are different, need to consider the situation of each district.