灌水施肥对冬小麦光合产物分配的影响

Effects of Irrigation and Fertilization on photosynthate Distribution of Winter Wheat

试验于2008-2009年在天津农学院灌溉试验站进行,研究了冬小麦光合产物分配的规律。结果表明,轻度水分和养分胁迫促进根系生长,有利于干物质向生长中心积累。叶的生长发育对水分养分胁迫敏感。水分养分胁迫使得茎干物质的转运率和对籽粒的贡献率提高。并且茎干物质转移量对籽粒的贡献率要高于根和叶。中水低肥处理干物质转运量和对籽粒的贡献率最高。水分养分对冬小麦干物质的分配具有明显的交互作用。

The experimental research on the law of photosynthate distribution of winter wheat was conducted in 2008-2009 year at Tianjin agricultural university irrigation test station. The results showed that slight stress of water and nutrient could promote root growth and led to dry matter accumulation toward growth center. Leaf growth was sensitive to water and nutrient stress, which pro rooted dry matter translocation ratio of stem and contribution to grains. The contribution to grains of dry matter translocation of stem was higher than that of root and leaf. The dry matter translocation and contribution to grains of well water and low nutrient treat- ment was the highest. Water and nutrient had apparent interaction to dry matter distribution of winter wheat.