玉米是需肥较多的作物,不同的生育时期,需要施用不同种类和用量的肥料,产量越高,应施用肥料越多。我们把底肥和穗肥重、苗肥和秆肥轻两头重中间轻的施肥方法简称老办法,把底肥和秆肥重、苗肥和穗肥轻两重两轻的施肥方法简称新办法。新老办法的区别主要是母本秆肥和穗肥的用量不同,新办法提倡重施秆肥,老办法采用重施穗肥。在生产实践中我们发现,新办法更能满足母本的正常生长发育,更有利于提高制种产量。新办法经400hm~2不同品种的生产应用,平均比老办法增产10%以上,收到 Maize is a fertilizer that requires more fertilizer. Different fertilizations require different types and amounts of fertilizers. The higher the yield, the more fertilizers should be applied. We put the base fertilizer and panicle weight, fertilizer and stalk light weight two intermediate heavy method of light referred to as the old method, the fertilizer and stalk fat, seedling and spike light weight two light two new methods of fertilization. The difference between the old and the new methods is mainly the amount of straw and spike of the female parent is different, the new approach to re-apply stalk fertilizer, the old method of heavy panicle fertilization. In production practice, we found that the new approach can better meet the normal growth and development of the female parent, but also more conducive to raising seed production. The new method by 400hm ~ 2 different varieties of production applications, an increase of more than 10% of the average than the old method, received