1 父本散粉期比母本吐丝期略早技术 以往制种,在确定错期播种时,制种单位往往遵循“宁可母等父,不让父等母”的原则,可在实际操作中,会遇到一些意想不到的困难,如果母本吐丝期比父本散粉期偏早,在拔母本雄穗时,制种农户不愿意摸苞去雄,担心母本授不上粉,给去雄工作带来一些阻力,势必影响制种纯度。现在反其道而行之,在确定播种错期时,使父本散粉期比母本吐丝期略早一些,迫使制种农户早拔母本雄穗,摸苞去雄,(否则,就有花期不遇的危险),既提高了制种质量,又不影响产量,还减轻了去雄工作强度,缩短了去雄周期。 2 母本带茎叶去雄技术 1 The parental powder-feeding period was slightly earlier than that of the female parent during silking. In determining the wrong-sowing date, the seed-producing units often follow the principle of " , Will encounter some unexpected difficulties, if the female parent silking period is earlier than the father of loose powder, unplugging the mother when tassels, seed farmers do not want to stick to their brains, worried about the mother granted no powder, Bring some resistance to the work of removal, it is bound to affect the purity of seed production. In the opposite direction now, the sowing date for the sowing of the male parent is slightly earlier than that of the female parent during the sowing time, forcing the seed farmer to make early detection of the female parent, There is no risk of flowering), not only improve the quality of seed production, but also does not affect the yield, but also reduce the intensity of work to eliminate male, shortening the cycle of emasculation. 2 maternal stem and leaf removal technology