今年安排春播布点试验方案时,我们农技站的同志发生了一场争论。一部分同志认为,品种对比试验必须规定统一密度,因为品种试验是单因素试验,除了品种不同外,其它因素都应该相同,否则就违背了“单一差异”原则,失掉了可比性;另一部分同志认为,品种试验应依各个品种的特性,规定不同的密度,如果违反品种特性,规定统一的密度,则各个品种的增产潜力就不能充分发挥,品种试验也不会有好结果。前者引用了不少书籍资料, When this year’s arrangement of spring planting sites test program, we agronomy station comrades had a debate. Some comrades think that the variety comparison test must stipulate the uniform density because the variety test is a one-factor test and all the factors should be the same except for the variety, otherwise, the principle of “single difference” will be violated and the comparability will be lost. Another part of the comrades thinks Variety testing should be based on the characteristics of each species, the provisions of different densities, breach of variety characteristics, the provisions of the uniform density, the potential for increasing the yield of various varieties can not give full play to species trials will not have good results. The former cited a lot of books and information,