大田条件下设置不同的施氮和灌水水平,研究施氮量和灌水量对冬小麦(Triticum aestivum L.)叶片光合作用生理及籽粒形成的影响。结果表明,施氮和灌水提高叶片Fv/Fm和Pn,并显著提高冬小麦籽粒产量、单位面积穗数和每穗粒数。施氮明显降低千粒重,而适量灌水明显提高千粒重。 Different nitrogen and irrigation levels were set up under field conditions to study the effects of nitrogen and phosphorus on the photosynthesis physiology and grain formation of winter wheat (Triticum aestivum L.). The results showed that nitrogen and irrigation increased Fv / Fm and Pn, and significantly increased winter wheat grain yield, spikes per panicle and grains per spike. Nitrogen application significantly reduced 1000-grain weight, and proper irrigation significantly increased 1000-grain weight.