Increasing plant density could increase the accumulation rates of amylose, amylopectin and starch from 14th to 35th DAA and the contents and the accumulated amounts of amylose, amylopectin at maturity.

• 降低施氮量，减少后期施氮比例，提高密度，显著增加了生育中后期可溶性糖含量及C/N比值，降低生育后期植株含氮率，减少氮素的吸收积累，降低花后14一35天旗叶NRA，从而降低籽粒蛋白质含量，改善弱筋小麦品质。