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研究表明，皖单４号、掖单２号在皖南广德红黄壤地区具有较好的适应性，经济产量较高。在玉米生育后期雨水较少情况下，氮素水平可减少６０ｋｇ／ｈｍ ２，皖单４号、掖单２号产量达６ ７００ｋｇ／ｈｍ ２。
The results showed that Wandan 4 and Yedan 2 had good adaptability in the red and yellow soil areas of Guangde, southern Anhui Province, with higher economic yield. Under the condition of less rainfall in late corn stage, the nitrogen level could be reduced by 60kg / hm 2, the output of Wandan 4 and Yedan 2 reached 6 700kg / hm 2.