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采用系统调查的方法,调查分析了超级稻和常规稻在分蘖期不同淹水时间对生长发育及产量的影响,提出了水稻受灾后技术抗灾对策和关键技术措施。不同淹水条件下,超级稻和常规稻均随淹水时间延长减产幅度加大,产量降低的原因主要是有效穗数、穗总粒数和千粒重下降,且全生育期延长。超级稻对淹水胁迫的抗性和适应能力优于常规稻,受害轻,恢复生长快,减产幅度低。早稻翻秋种植是灾后重要的补救措施,其关键技术是适时早播,适当增加播种量。
The systematic investigation method was used to investigate the effects of flooding time on the growth and yield of super rice and conventional rice at tillering stage. The countermeasures and key technical measures for disaster prevention were put forward. Under different flooding conditions, both the super rice and the conventional rice decreased with the prolongation of flooding time. The main causes of the decrease were the effective panicle number, the total grain number per panicle and the 1000-grain weight, and the extension of the whole growth period. Super rice resistant to flooding stress and adaptability than conventional rice, light damage, fast recovery and growth, low yield. Early autumn rice planting is an important remedy after the disaster, the key technology is timely and early sowing, the appropriate increase in seeding.