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兴安盟玉米中熟区是指积温2 300~2 500℃,生育期110~120d区域,其玉米总面积17万hm2,占全盟玉米播种面积的40%。这一地区的长期主栽品种为哲单39和哲单35,由于多年种植,品种明显退化。为加快这一生态区玉米品种更新,2008年兴安盟种子管理站在其农作物品种推广示范基地对10个品种进行试验,以鉴定其丰产性、适应性,加速新品种的更新步伐。
Xing’an UNITA corn midrib area refers to the accumulated temperature 2 300 ~ 2 500 ℃, the growing period of 110 ~ 120d area, the total area of 170,000 hm2 of corn, accounting for 40% of the whole area of corn sown area. Long-term cultivars in this area are Zhendan 39 and Zhedan 35, which have obviously degraded due to years of planting. In order to speed up the renewal of maize varieties in this ecological zone, in 2008, Xing’an League Seed Management Station tested 10 varieties on its variety demonstration bases to identify its high yield and adaptability and accelerate the update of new varieties.