Retrospect and Prospect on Maize Breeding in Past 50 Years in Heilongjiang Province

The development of maize in Heilongjiang province was summaried in this paper and the developmental course and advances about maize breeding in the past fifty years in Heilongjiang was illustrated comprehensively which including the selection and application of farming varieties,comprehensive varieties and hybrid,breeding of inbred-line and creation of germplasm basic theory and special use maize breeding.The progress of breeding technology development of aims and breeding method were discussed.The breeding of hybrid,germplasm innovation and inbred-lines election have made important achievement in the past fifty years.The suggestions were made to develop maize breeding in Heilongjiang province: Such as intensifying the research on germplasm breeding,the disease-resistent and stress-resistent varieties,applying bio-technology in breeding and breeding density-tolerant varieties.