1影响玉米种子发芽率的因素分析1.1种子成熟度差种子的发芽率在种子的发育过程中,与种子成熟度呈正相关,成熟度好,发芽率和发芽势高。近几年,公司由于果穗烘干线的启用,一般在9月中上旬即开始收获进行穗烘干。尤其是2014年,本身由于积温不够、干物质积累少,收获时绝大多数种子的乳线都在1/2左右,最终导致大部分种子的发芽率达不到客户要求的95%(活秆成熟的硬粒型种子表现尤为突出)。1.2田间病虫的为害由于个别自交系抗病虫性差,易感玉米穗腐病,加之 1 Factors Affecting Maize Seed Germination 1.1 Seed maturity Poor seed germination rate in the seed development process, and the seed maturity was positively correlated, maturity, germination rate and germination potential. In recent years, due to the opening of the ear drying line, the company generally began harvesting in early September for ear drying. Especially in 2014, due to insufficient accumulated temperature and less dry matter accumulation, most of the sewn yam of the seeds is about 1/2 when harvested, which eventually leads to the germination rate of most of the seeds less than 95% of the customers’ requirements Mature hard-grain seed performance is particularly prominent). 1.2 Pest damage in the field due to individual inbred lines resistant to diseases and insects, susceptible corn ear rot, coupled with