膜下滴灌旱种对寒地水稻穗部性状和产量的影响

来源 :江苏农业科学 | 被引量 : 0次 | 上传用户:mazd88
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以94份寒地早粳稻品种(系)为材料,采用随机区组试验设计,研究膜下滴灌旱种对寒地水稻穗部性状和产量的影响.结果表明:膜下滴灌旱种对寒地水稻穗长、单穗质量、一次枝梗数、二次枝梗数和理论产量的影响具有双向性;膜下滴灌旱种增加了单穗质量和一次枝梗数的变异度,减少了穗长、二次枝梗数和理论产量的变异度;理论产量对膜下滴灌旱种的反应较敏感;穗长较长、单穗质量较大、一次枝梗数较多、二次枝梗数较多的水稻种质具有相对较强的旱种适应性;穗长、单穗质量、一次枝梗数、二次枝梗数对膜下滴灌旱种反应较敏感的材料,一般其理论产量对膜下滴灌旱种的反应较敏感.
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