当前我国农作物新品种推广实行国、省两级审定制度,审定通过的新品种即可在适宜区域推广。但是,由于多种原因,目前新品种太多。以陕西为例,仅2012年审定玉米新品种就有36个,其中适宜关中灌区夏播品种多达17个。在一些种子经营门店看到玉米品种数多在10~20个。品种太多导致多数种子经营者说不出到底哪个品种好,农民购种时眼花缭乱,不知该买哪个品种,多数是盲目 At present, the implementation of national and provincial examination and approval systems for the promotion of new varieties of crops in China can be promoted in suitable areas through approval of new varieties. However, due to a variety of reasons, there are currently too many new varieties. In Shaanxi, for example, there are 36 new varieties approved in 2012 alone, of which 17 are suitable for summer sowing in Guanzhong Irrigation District. In some seed stores to see corn varieties more than 10 to 20. Too many varieties led to most of the seed operators can not tell which species is good in the end, when farmers dazzled, I do not know which species to buy, mostly blind