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选择了不同时期产量水平有显著差异的3个主栽小麦品种,对其于物质积累及分配特性进行了研究。结果表明,参试品种的生物学产量差异不大,碧蚂1号和济南2号生育前期光合生产力高,而当前品种鲁麦14后期光合生产力高,其灌浆期的相对生产率(RGR)和作物生长率(CGR)占优势,花后干物质积累多,导致其收获指数较高。鲁麦14花前茎中贮藏的干物质输出率较高。在现有品种的基础上进一步提高产量潜力,需在增库的同时增源。本文对与此有关的品种改良途径和选择问题进行了探讨。
Three main wheat cultivars with significant differences in yield at different stages were selected to study their material accumulation and distribution characteristics. The results showed that there was no significant difference in the biological yield between the tested cultivars, and the photosynthetic productivity of the early maturing stage of Bi-Ma 1 and Jinan 2 was high. However, the photosynthetic productivity of the current cultivar Lumai 14 was high, and the relative productivity (RGR) The growth rate (CGR) predominates and the post-anthesis dry matter accumulation leads to higher harvest index. Lumai 14 pre-flowering stems stored in higher dry matter output. On the basis of existing varieties to further enhance the yield potential, need to add resources at the same time. This article discusses the ways to improve the varieties and their selection.