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为鉴定杂交籼稻组合在云南干热籼稻区种植的产量潜力,研究不同产量水平水稻产量形成规律及群体质量指标,选用大面积生产应用的6个杂交籼稻品种为材料进行了比较试验,并根据当地水稻生产特点制定了相应的高产栽培技术。结果显示,广优1186、德优4727、两优2186、宜优673、两优2161、宜香3003产量分别为15.65、15.29、15.19、15.18、14.89和13.95 t/hm~2。为更好的分析水稻高产形成规律,将6个品种产量划分为高产(13.0~14.0 t/hm~2)、更高产(14.0~15.0 t/hm~2)、超高产(15.0~16.0 t/hm~2)3个不同产量水平。超高产水稻较更高产水稻有效穗数提高10.25%,较高产水稻总粒数、实粒数、结实率分别提高32.13%、35.69%、12.50%;超高产水稻高峰苗数较更高产、高产水稻分别低10.32%和30.02%;成穗率随着产量水平的增加而增加。超高产水稻齐穗期总LAI为7左右,高效叶面积率70%左右。颖花量随着产量的增加而增加。超高产水稻实粒/叶、粒重/叶较高产水稻分别增加20.00%和25.54%。超高产水稻齐穗期、成熟期、齐穗至抽穗期干物质积累量较高产水稻分别提高11.70%、11.96%和12.35%。
In order to identify the potential yield of indica hybrid rice planting in dry and heat indica rice planting areas in Yunnan Province, the yield formation rules and population quality indexes of rice at different yield levels were studied. Six hybrid indica rice varieties used in large-scale production were compared and tested. Rice production characteristics developed a corresponding high-yielding cultivation techniques. The results showed that the yield of Guangyou 1186, Deyou 4727, Liangyou 2186, Yiyou 673, Liangyou 2161 and Yixiang 3003 were 15.65, 15.29, 15.19, 15.18, 14.89 and 13.95 t / hm ~ 2, respectively. In order to better analyze the formation of high yielding rice, the yield of 6 cultivars was divided into high yield (13.0 ~ 14.0 t / hm ~ 2), high yield (14.0 ~ 15.0 t / hm ~ hm ~ 2) 3 different production levels. The effective panicle number of super high-yielding rice was increased by 10.25% and that of higher yielding rice was 32.13%, 35.69% and 12.50%, respectively. The number of high-yielding seedling of super-high yielding rice was higher than that of higher yielding and high yielding rice Respectively 10.32% and 30.02% lower; spike rate increased with the increase of production level. The total LAI at the heading stage of super-high-yielding rice was about 7 and the effective leaf area was about 70%. The volume of spike increased with the increase of yield. The grain yield of super high yielding rice / leaf, grain weight / leaf yield increased by 20.00% and 25.54% respectively. The highest dry matter accumulation from heading to heading stage of super high-yielding rice was 11.70%, 11.96% and 12.35% at heading stage and mature stage respectively.