品种比较试验(此处泛指基本定型品系和品种,从鉴定囚到区域试验的各级产量比较试验,以下简称品比试验)的产量结果是育种过程中选、汰品种(系)的一项主要指标,也是决定一个新品种在当地生产上有无推广价值的重要依据。然而实践中却常常出现这样的情况,即在一个试验单位品比试验中产量表现一般的品种,在以后的异地鉴定和生产过程中却表现较好而成为推广品种,而有些在品比试验中产量表现突出的品种,生产上却并没有大量推广。这种实例省内外都很多。因而如何正确进行品比试验和正确估价试验的产量结果是值得引起重视的问题。实际上,特定年份特定地区一个品种比较试验中,各个品种的产量表现只是这些品种的生产潜力在特定条件下的具体表现。试 Variety comparison test (here refers to the basic set of strains and varieties, from the identification of prisoners to regional trials at all levels of yield comparison test, hereinafter referred to as the product ratio test) is the breeding process of selection, elimination of varieties (lines) of a major Indicators, but also determine whether a new breed in the local production of an important basis for the promotion of value. In practice, however, it is often the case that in a test unit, the average yield of varieties tested in the subsequent off-site identification and production process is better and become a promotion of varieties, and some in the ratio test Outstanding varieties of production performance, but did not produce a lot of promotion. This example is a lot of inside and outside. Therefore, it is worth to pay attention to how to correctly conduct the ratio test and correctly evaluate the output of the test. In fact, in a comparative test of a certain species in a particular year in a given year, the yield performance of each variety is only the concrete manifestation of the production potential of these varieties under certain conditions. test