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杂交玉米制种过程中,父本花粉量数量的多少及其生活力高低直接影响着制种产量。在父本田间管理中,播种时不施底肥。苗期不追肥,造成父本发育迟缓,植株矮小,至使父母本花期不遇。特别是雄穗分枝、花粉量少做父本(四单19、烟单14、东农248等)的组合,表现尤为突出,稍有不甚,造成花期不遇,而严重影响制种的质量和产量,通过几年的试验,对玉米杂交制种中的父本田间管理应着重以下几方面。
In hybrid corn seed production process, the amount of male pollen and the amount of its viability directly affect the seed production. Management in the parent field, not fertilized when sowing. Seedling not topdressing, resulting in the father of stunting, plant dwarf, so that the parents of the flowering not happen. Especially the tassel branches, pollen less fat father (Ssingle 19, Yidan 14, Dongnong 248, etc.) combination, the performance is particularly prominent, slightly less, resulting in flowering not met but seriously affect the quality of seed production And yield, through several years of testing, the field of male parental breeding in the hybridization of corn should focus on the following aspects.