追氮时期对不同小麦品种光合特性和产量的影响

为了给小麦的优质高产栽培提供依据，以强筋小麦烟农19、中筋小麦皖麦52和弱筋小麦安农0305为材料，研究了追氮时期对小麦产量及光合特性的影响。结果表明，追氮时期对叶面积、叶绿素含量和光合速率影响显著，不同处理间均差异显著。另外，追氮时期对于小麦产量的影响显著，表现为拔节、孕穗期追氮比返青、起身期追氮更能提高小麦产量，其中拔节期追氮对小麦产量的提高尤为明显。

Effect of Nitrogen Topdressing Stage on the Photosynthesis and Yield of Different Wheat Varieties

The purpose of this experiment was to provide the basis for high-quality and high-yielding cultivation,and the expepriment was carried out in the experimental farm of Department of Agronomy,Anhui Agricultural University.Three varieties,strong-gluten Yannong 19,medium-gluten Wanmai 52 and weak-gluten Annong 0305 were selected as materials.The effect of nitrogen topdressing stage on the yield and photosynthesis was studied with split-plot design with two factors.The results showed that the effect of nitrogen ...