作物育种单位选育出新品种后,推广之前必须参加一定地区范围内的品种区域试验。区域试验的目的在于通过多点评比了解各品种的产量潜力、稳产性、适应性、推广价值和适于推广的范围。因此,选试点不但要有一定的数量,而更重要的是要能代表一定的生态区。点多而代表性不够,将影响区试结果,不能恰切反映实际情况,会作出有片面性的评价。相反,设点虽然不多,但布点合理,选点有代表 Crop breeding units breeding new varieties, promotion must participate in a certain area within the region before the regional test. The purpose of the regional experiment is to understand the yield potential, stability, adaptability, promotion value and range suitable for popularization of each variety through multi-point comparison. Therefore, the election of pilot not only has a certain amount, but more importantly, it should be able to represent a certain ecological zone. The lack of adequate representativeness will affect the results of the district test and can not exactly reflect the actual situation and will make a one-sided assessment. On the contrary, although the set point is not much, but the layout is reasonable, the election point is representative