菁两优636母本旱育抛秧和手插秧栽培制种效果分析

    Analysis on the Seed Production Effect of Jingliangyou 636 Under the two Cultivation Methods of Dry Breeding with Seedling Throwing and the Traditional Manual Transplanting

    • 摘要: 为了探讨杂交水稻母本抛秧栽培与手插秧栽培的制种效果,以两系杂交稻菁两优636的亲本菁农S和荟恢636为试验材料,比较制种中不育系菁农S在旱育抛秧和传统手插秧两种栽培方式下其生育特性、产量及其构成、制种效益等方面的差异。结果表明,母本抛秧栽培较传统手插秧栽培母本的播始历期缩短4 d,花期更加集中,午前花率达74.33%,柱头外露率达56.47%,异交结实率达58.07%,最高苗达543.37个·m-2,有效穗数达343.93穗·m-2,均显著高于手插秧栽培。母本抛秧栽培较传统手插秧栽培产量增加74.77 kg·hm-2,增产2.03%。母本抛秧栽培制种在增加产量的同时,还节约人工成本,提高了制种效益,增收和节支达3 609元·hm-2,有较好的经济效益。

       

      Abstract: In order to explore the seed production effects of hybrid rice with the maternal parent seedling-throwing cultivation and the manual transplanting cultivation, Jingnong S and Huihui 636, the parents of the two-line hybrid rice Jingliangyou 636 were used as the experimental materials to compare the differences in the growth characteristics, yield and its components, and seed production efficiency of the sterile line Jingnong S under the two cultivation methods of dry breeding with seedling throwing and the traditional manual transplanting. The results showed that compared with the traditional manual transplanting cultivation, the maternal parent seedling-throwing cultivation shortened the heading date by 4 days, and the florescence was more concentrated. The flowering rate before noon was 74.33%, the stigma exsertion rate was 56.47%, the allogamy fructification rate was 58.07%, the highest seedling was 543.37 per m2, and the effective panicle number was 343.93 per m2, which were significantly higher than those of manual transplanting. The yield of maternal parent seedling-throwing cultivation increased by 74.77 kg·hm-2 and increased by 2.03% compared with the traditional manual transplanting cultivation. The maternal parent seedling-throwing cultivation not only increased the yield, but also saved the labor costs and improved the efficiency of seed production. The income and expenditure were increased by 3 609 yuan·hm-2, which had better economic benefits.

       

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