我国幅员辽阔,从北方的寒温带到南方的热带,从沿海的湿润地区到西部内陆性干旱地区,形成多种多样的玉米生态区,不同玉米生态区]化了丰富的玉米种质资源及栽培品种,为玉米育种研究提供了十分有利的条件。随着市场经济的形成和玉米种业的蓬勃发展,商品性育种研究随之兴起,大量的 China has a vast territory, ranging from the cold temperate zone in the north to the tropical in the south, from the humid coastal areas to the inland arid western areas, forming a variety of maize ecological zones, and different maize ecological zones have enriched the abundant maize germplasm resources and Cultivars, which provide very favorable conditions for maize breeding research. With the formation of a market economy and the vigorous development of corn seed industry, the research of commercial breeders has been followed by a large number of