不同肥力对晚播小麦开花后地上器官干物质积累运转及产量的影响

Effects of Different Fertility on Yield and Canopy Biomass Accumulation and Distribution after Anthesis of Later Sowing Wheat

对不同肥力水平下晚播小麦开花后地上器官光合产物积累、运转和对产量影响的研究表明 ,开花后同一天 ,各地上器官光合产物的积累量均随肥力水平的提高而增加。施肥使叶鞘、茎秆光合产物积累量于开花后 1 0 d达到最大 ;地上器官光合产物对籽粒的贡献率随着施肥水平的提高而呈增加趋势 ,施肥处理的贡献率为茎秆 >叶片 >穗部器官 >叶鞘 ,不施肥处理为茎秆 >叶片 >叶鞘 >穗部器官。

The effects on yield and canopy biomass accumulation and distribution after anthesis of later sowing wheat were studied in different fertility levels. The results showed that each above ground organs hydrocarbonate accumulation increased with fertility level rising. After fertilizer application, hydrocarbonate accumulating, which was in leaf sheath and stem, reached it's peak rate at flowering ten days. Above ground organ hydrocarbonate distribution rate to kernel increased along with fertility levels. The distribution rate to grain with the fertilizer application treatment was stem>leaf>ear>leaf sheath, contrast to which was stem>leaf>leaf sheath> ear without fertilizer applying treatment.