直播方式和播种方式对直播稻生长发育及产量形成的影响

摘要

In order to select the suitable sowing method for direct seeding rice, the effects of dibbling and broadcasting on emergence rate, seedling rate, tillering dynamics, tiller number, dry matter accumulation in heading stage and maturity stage, yield and yield components were compared under water direct seeding and dry direct seeding, using hybrid rice Chuanyou 6203 and conventional rice Jinnongsimiao as materials. The results showed that, compared with dry direct seeding, the emergence rate of water direct seeding was lower, but seedling rate and yield were higher. On the other hand, hill-drop drilling rice performed better than broadcast-sowing rice on seedling growth, population quality, dry matter accumulation and yield.%为了选择合理的直播稻播种方式,以杂交稻川优6203、常规稻金农丝苗为材料,在水直播、旱直播方式下,比较了穴播和撒播方式对出苗率、成苗率、分蘖动态、分蘖数量、抽穗期和成熟期的干物质积累量、产量及产量性状的影响.结果表明,与旱直播相比,水直播虽然出苗率低,但成苗率高,群体质量更高,产量较高;穴播比撒播秧苗分布更规范化,群体质量高,后期干物质积累高,产量性状协调,最终产量更高.