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根据玉米制种的实际情况和多年的制种经验 ,总结出了紧凑型玉米夏套制种提高产量和纯度的几项关键技术措施。除严格掌握空间隔离 30 0 m、时间隔离 4 0d、自交系纯度 99%以上和抓好追肥、浇水、治虫、中耕、除草等常规技术外 ,还应着重抓好以下措施 :1 适当增加母本株数紧凑型
According to the actual situation of corn seed production and many years of seed production experience, summed up the compact corn summer seed production to improve the yield and purity of several key technical measures. In addition to the strict control of spatial separation 30 0 m, time isolation 4 0d, inbred line purity of 99% or more and do a good job top dressing, watering, pest control, herbicides and other conventional techniques, should focus on the following measures: 1 Appropriate increase The number of female parent is compact