品种比较试验从外地引入或本地选育的新品种,在生产上推广以前,必须通过品种比较试验进行鉴定,看它是不是适应当地条件,增产效果是不是显著,以免因盲目引种或大量种植给生产带来不应有的损失。田间布置方法 1.顺序排列法:本法适用于试验初期,供试验的材料很多,要求比较低的情况。 Variety comparison test Introduced from the field or local selection of new varieties, before the promotion of production, must be identified through comparative trials to see if it is adapted to local conditions, the effect is not significant increase, so as not to blindly introduced or planted to a large number of Production brings undue losses. Field arrangement method 1. Sequential method: This law applies to the initial test for the test of many materials, lower requirements.