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1选育目的针对西南玉米生产区山地多、土壤肥力差、雨水集中、干旱频发、阴雨寡照、自然灾害多发等特殊生态类型特点,玉米杂交种除要求具备高产、稳产外还要求适应性广,抗病抗逆力强,品质优良等优点。宣黄单4号2005~2006年参加贵州省区试H组和2006年生产试验,综
Breeding purposes Aiming at the characteristics of special eco-types such as mountainous areas in the southwest corn producing area, poor soil fertility, concentrated rainfall, frequent drought, rain and oligozoa, multiple natural disasters and so on, the hybrids of corn require the wide adaptability , Strong resistance to disease, good quality and so on. Xuan Huang Shan No. 4 from 2005 to 2006 to participate in the Guizhou Provincial Test Group H and 2006 production test, comprehensive