玉米自交系是制种之本。制种产量质量的高低与自交系有很大关系,它不仅影响着制种质量和产量,而且还影响到农产利益以及种子公司与农户的关系。在提高扩繁自交系质量与产量上,我们摸索出一套实用技术,1998年在安庄镇6hm~2自交系繁殖中,平均单产342kg/667m~2,质量达到国家标准。其主要措施如下: 1 播种环节抓四选 1.1 选地:针对自交系生活力较弱的特点,宜选用地势平坦,土壤肥沃,地力均匀,群众基础好的地块。因是自交系繁殖,隔离区必须严把 Maize inbred lines are the seeds of seed production. The quality of seed production is closely related to inbred lines. It not only affects the quality and yield of seed production, but also affects the interests of agricultural produce and the relationship between seed companies and farmers. In improving the quality and yield of the expanded inbred lines, we explored a set of practical techniques. In 1998, the average yield of 6hm ~ 2 inbred lines in Anzhuang was 342kg / 667m ~ 2, and the quality reached the national standard. The main measures are as follows: 1Seeding sowing four election 1.1 Selection: For the inbred line weaker living features, should use flat, fertile soil, uniform fertility, the mass base of good people. Because inbred breeding, isolation area must be strict