1选择优良杂交种选择适合本地条件的优良杂交种是优质高产高效的关键,种庄稼应树立以种为本的理念。一般选用优种可提高产量15%～20%,选择的品种必须是经过省级以上审定并适宜当地种植的品种,既要品种对路,又要种子质量好。我省目前普遍采用的玉米优良杂交种有郑单958、浚单20、新单23、农大108等。2力争早播早播是优质高产节本增效的必要条件,夏玉 Selection of excellent hybrids Selection of suitable hybrids for local conditions is the key to good quality, high yield and high efficiency. Crops should establish a species-oriented philosophy. General selection of superior species can increase the yield of 15% to 20%, the selected species must be validated at the provincial level and suitable for local cultivation of varieties, both varieties and the way, but also the seeds of good quality. At present, the hybrid corn varieties commonly used in our province are Zhengdan 958, Xundan 20, Xin’dan 23 and Nongda 108. 2 Strive to sow early sowing is the necessary conditions of high quality and high yield, summer jade