论文部分内容阅读
以汕优多系１号等组合为材料，在不同栽培密度下，通过对不同时期干物质积累状况、茎、鞘光合产物分配及籽粒灌浆情况和经济性状的测定和分析，找出规律以确定不同水稻品种的源库特征，将供试品种分为增源增产类和增源增库互作增产类２个类型。增源增产型：茎鞘物质的输出率和转换率较高（尤其是转换率），穗实粒数较低，千粒重较高，上部叶片（尤其是旗叶）对产量形成影响较大，而增库增产型则相反。并对不同类型的水稻品种提出了相应的栽培措施。
With the combination of Shanyou multi-line 1 and other combinations as materials, the law of dry matter accumulation, distribution of stem and sheath photosynthesis products, grain filling and economic traits in different periods were determined and analyzed under different planting densities to find out The characteristics of source and sink of different rice cultivars were divided into two types: increasing source and increasing source and increasing source and increasing yield. Increasing yield: The yield and conversion rate of stem and sheath substances were higher (especially the conversion rate), the number of grains per panicle was lower and the grain weight was higher. The upper leaves (especially the flag leaves) had a greater impact on the yield formation. Increase the library increase the contrary. And put forward corresponding cultivation measures for different types of rice varieties.