1、选用经审定适宜本地种植的品种这是选用玉米品种的一个原则性问题。审定了的品种,是经过品种选育单位对杂种组合的抗逆性、适应性、丰产性比较试验,并推荐参加国家、省级预备试验和多年多点区域试验以及生产试验而择优选出的品种,选用这样适应本地气候和生产条件的品种,在丰产性、稳产性、适应性等方面,具有一定的 1, the selection of certified local varieties suitable for planting This is the selection of corn varieties a principle of the problem. Approved varieties, is through the variety breeding units hybrid combinations of stress resistance, adaptability, high yield comparison test, and recommended to participate in the national and provincial preparatory tests and many years of multi-point regional trials and production trials and choose out of preference Varieties, selection of such adapt to the local climate and production conditions of varieties, in terms of high yield, stable yield, adaptability, etc., have a certain