摸苞去雄是提高玉米种子纯度的有效途径

• 作 者: 景雅洁
• 机 构: 辽宁省葫芦岛市种子管理站 125000
• 出 处: 种子世界
• 发表日期: 1997年11期
• 关键词: 种子纯度 玉米杂交制种 雌穗 养分转移 雄穗 穗分化 田间管理技术 增加产量 制种户 制种田

1 摸苞去雄的作用 1.1 促进营养向雌穗转化,增加产量摸苞(带1～2叶)去雄,可以节省雄穗及幼叶发育所需的养分,将这部分养分转移到雌穗发育上。此时正是雌穗小穗分化末期和小花分化初期,可促进雌穗发育,形成棒大粒多,增加产量。据1995年、1996年试验,掖单2带两叶摸苞去雄与雄穗散粉前去雄对比,平均每穗增加11粒,亩增产11kg,增产3.5%左右。

1 touch the role of the bud to the male role 1.1 promote nutrition to the ear conversion, increase production Touch bud (with 1 to 2 leaves) to the male, you can save male and young leaf development of nutrients needed to transfer this part of the nutrients to the ear Development. At this point it is the ear spikelet differentiation and early floret differentiation, can promote the development of the ear, the formation of large rods and more to increase production. According to 1995 and 1996 tests, Yedan 2 with two leaves touch the bud to the male and scattered before tasseling to the male contrast, the average increase of 11 grains per ear, mu yield 11kg, an increase of 3.5%.