‘浦优22’杂交水稻高产制种及钵苗机插栽培技术研究

High-yielding reproduction and plug seedling transplating techniques of 'Puyou 22'

以粳籼交超高产水稻新品种‘浦优22'为材料,研究了制种父母本大行比、不同钵苗机插密度对产量及产量结构的影响和不同浓度多效唑对钵体秧苗素质的影响。结果表明:适当扩大父母本行比有利于提高制种产量,父母本行比最佳值为2:12;钵苗机插有利于发挥产量潜力,以株行距12 cm×33 cm的产量最高;秧苗期喷施多效唑对‘浦优22'钵体秧苗有明显的控制作用,对根系的促进作用不明显,秧苗在2—3叶期间喷施450 g/hm^2的多效唑纯量对钵苗培育壮秧较为适宜。

Three experiments were performed based on the super high-yield Indica-Japoniac hybridization ＇ Puyou 22＇. The results showed that increasing the row ration of female parent was beneficial to yield promotion, and the best ratio was 2： 12;plug seedling transplanted with the best row and plant spacing of 12 cm ×33 cm could get the highest yield ; spraying paclobutrazo could control the above-ground part of plug seedling growth but had no significant promotion to the root growth, it was best to spray the paelobutrazo with a concentration of 450 g/hm^2 at 2-leaf or 3-leaf stage.