前氮后移施肥对小麦旗叶生理功能及产量的影响

The Effect of N Application at Late Growth Stage on the Physiological Function of Flag Leaf and Yield in Wheat

研究结果表明，前氮后移可以提高小麦灌浆期旗叶中叶绿素和蛋白质的含量，减少超氧阴离子的产生，降低ＭＤＡ含量，延缓旗叶衰老，提高叶片功能；增加穗粒数和千粒重，从而提高小麦产量。

N application at late growth stage could increase chlorophyll and protein content of flag leaf during wheat filling stage,decrease the super oxygen anion produce and MDA content,retard the senescence of flag leaf,enhance leaf function and raise grains per ear and 1000 grain weight,thus,increasing wheat yield.