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以具代表性的5个籼型超级稻为材料,用汕优63作对照,比较研究了超级中籼杂交稻物质生产与分配的特性。超级稻具有显著的物质生产与积累优势,产量随成熟期物质积累量的增加而提高。超级稻的物质生产优势集中在中期和后期,产量与拔节前的干物质积累量相关不显著,与拔节至抽穗期的积累量呈显著正相关,与抽穗至成熟期的干物质积累量呈极显著正相关;超级稻抽穗期营养器官贮存了较多的结构物质但干物质表观输出量均低于对照,平均少148.5 kg/hm2,表观输出率也低,平均低2.5个百分点。超级稻的叶面积及光合势的显著提高促进了群体生产率的提高,大田期平均群体生产率比对照高4542(m2.d)/hm2。
Five representative indica super rice cultivars were used as materials and Shanyou 63 as control. The characteristics of material production and distribution of super hybrid rice were compared. Super rice has significant advantages in material production and accumulation, and the yield increases with the accumulation of mature material. The material production superiority of super rice concentrated in the mid and late stages, the yield was not significantly related to the dry matter accumulation before jointing, but positively correlated with the accumulation from jointing to heading, and the dry matter accumulation from heading to maturity was But the apparent output of dry matter was lower than the control, with an average of 148.5 kg / hm2 less and the apparent output rate was also lower, with an average of 2.5 percentage points lower. The significant increase of leaf area and photosynthetic potential of super rice promoted the increase of population productivity. The average population productivity in field was 4542 (m2.d) / hm2 higher than the control.