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为探明机械直播和灌溉模式对水稻(Oryza sativa L.)产量和根系特征的影响,2013~2014年,设置水直播淹水灌溉(WF)、水直播间歇灌溉(WSW)、旱直播淹水灌溉(DF)和旱直播间歇灌溉(DSW)4种模式,以常规移栽淹水灌溉为对照(CK),考察水稻根系特征、产量等参数。结果表明,2013年,WF和WSW分别较CK实际产量提高7.3%和5.3%,DF和DSW与CK产量差异不显著,2014年产量情况大致相同。机械直播模式和灌溉模式均有利于水稻根系伸展和提高根系活力,旱直播模式能够延缓后期叶片衰老,从而在增产稳产前提下达到节水的目的。
To investigate the effects of direct seeding and irrigation modes on the yield and root characteristics of Oryza sativa L., from 2013 to 2014, the effects of direct seeding flooding irrigation (WF), water direct seeding intermittent irrigation (WSW) (DF) and intermittent irrigating by direct seeding (DSW). The conventional irrigation and flooded irrigation were used as control (CK) to investigate the characteristics of root system and yield of rice. The results showed that in 2013, WF and WSW respectively increased by 7.3% and 5.3% respectively compared with actual production of CK. The difference between DF and DSW and CK production was not significant, and the output in 2014 was roughly the same. Both direct mechanical irrigation and irrigation modes were beneficial to rice root extension and root activity, and the direct seeding drought mode delayed the late leaf senescence, thus achieving the purpose of water saving under the premise of stable yield.