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种植密度影响着玉米群体内小气候,进而影响玉米的生长发育。在自交系及组合选育过程中,通过提高种植密度增加个体间竞争压力,可以提高自交系及组合的选择效果。介绍了密植型自交系及组合的选育鉴定方法和效果,并提出了种植和推广密植型玉米自交系及品种的配套栽培技术以及面临的难题。加快密植型玉米自交系及组合的选育进程,大力种植和推广密植型玉米自交系及品种,并辅以配套栽培技术,必将大大推动山西省玉米科研和生产水平的进一步提高,加快山西省玉米生产发展。
Planting density affects the microclimate within the maize population, which in turn affects the growth and development of maize. In inbred lines and combination breeding process, by increasing plant density to increase the competitive pressure between individuals, can improve the selection effect of inbred lines and combinations. The methods and effects of planting and popularizing inbred lines of densely inbred lines and combinations were introduced. And the cultivation techniques and planting problems of planting and popularizing dense inbred lines of maize inbred lines and varieties were put forward. Speeding up the breeding process of dense inbred maize inbred lines and combinations, vigorously planting and popularizing the dense inbred lines of maize inbred lines and varieties, and supporting the cultivation techniques will surely greatly promote the further improvement of scientific research and production of maize in Shanxi Province, Shanxi corn production and development.