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灌溉条件下,减源可使小麦叶片光合速率增加,减库光合速率降低.增降幅度因品种而异.鲁215953、山农48-2、鲁麦14和莱州953等品种减源后光合速率增加较少,但减库后光合速率明显降低;鲁麦15、核生2、D041和太780等品种则相反.旱地无灌溉条件下,无论源或者库的调节对小麦叶片光合速率的影响都比较小.说明源库与光合速率之间的关系,除品种外栽培条件特别是水分状况对其有明显影响.减源能增大灌溉小麦光台产物向穗部籽粒的分配比例.鲁215953的增加幅度大于鲁麦15.减库对鲁麦15光合产物分配的影响较小,但使鲁215953光合产物向穗部籽粒分配减少,向茎鞘分配增多.旱地小麦物质生产分配对减源反应敏感.减源使其物质生产减少,向包括穗部籽粒在内的植株上部器官物质分配减少、而减库对其物质生产的影响甚小.表明穗粒库容并非旱地小麦物质生产的限制因素,但可调节其物质分配.减库使旱地小麦穗粒中物质分配减少,而植株上部营养器官中物质分配增加.
Under irrigation condition, the decrease of photosynthetic rate could reduce the photosynthetic rate of wheat leaves and reduce the photosynthetic rate of reduced storage, But the photosynthetic rate decreased significantly after reduced storage.Luma 15, Korn 2, D041 and Tai 780 were the opposite.Under irrigated conditions, the effect of either source or sink regulation on the photosynthetic rate of wheat leaves Is relatively small, indicating that the relationship between source and photosynthesis rate, in addition to cultivating conditions outside the variety of conditions, especially the water conditions have a significant impact on the source of irrigation can reduce irrigation Guangtai products to the spike grain distribution ratio of Lu 215953 Increase more than Lumai 15. The effect of reducing storage on the distribution of photosynthate of Lumai 15 was less, but the distribution of Lu 215953 photosynthate to the panicle decreased and the distribution to the stem and sheath increased.The distribution of material production in dryland was sensitive to the source reduction The reduction of material production by reduction of resources led to a reduction in the distribution of organ matter to the upper part of the plant, including the panicle grain, while the reduction of the stockpile had a small effect on its material production, indicating that grain ear stock is not the limiting factor for dry matter production in drylands Can adjust their material distribution.Lighten the inventory to reduce the material allocation of dryland wheat grains, while the upper vegetative organs of the plant material distribution increased.