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随着育种技术的快速发展,玉米制种产量和杂交玉米种子质量也不断提高。为了适应市场经济的发展,规范玉米种子生产操作程序。本文结合川东地区近年来玉米种子生产上的成功经验,就如何提高玉米制种田间纯度总结出以下技术措施。 1 选择隔离安全的制种基地杂交玉米制种田必须成片集中,统一规划,合理布局。选择基地不仅要考虑土质、气候、群众基础等条件,而且要着重选择隔离条件优,交通方便的地区为玉米制种基地。空间隔离要求制种田与周围其它玉米相距300m以上,自然屏障隔离要求利用
With the rapid development of breeding technology, the yield of maize seeds and the quality of hybrid maize seeds are also continuously increasing. In order to adapt to the development of market economy, regulate corn seed production and operation procedures. Based on the successful experience of maize seed production in eastern Sichuan in recent years, this paper summarized the following technical measures on how to improve the purity of maize field. 1 Select a secure seed production base Hybrid corn farming must be concentrated into a film, a unified planning, rational distribution. Base selection not only to consider the conditions of the soil, climate, mass base, but also to focus on the selection of excellent isolation conditions, convenient transportation area for the corn seed base. Spatial segregation requires farming to be more than 300 m apart from other maize around, and natural barrier isolation requires