Decreasing N applying amount could increase amylopectin and starch accumulation rates from 14th to 35th DAA and amylopectin and starch contents from the 21th DAA to maturity, but decrease amylose content.

• 提高密度，花后14一35天直、支链淀粉和总淀粉积累速率增加，从而提高籽粒成熟期直、支链淀粉含量和积累量。 由此说明适当减少弱筋小麦施氮量，降低生育后期施氮比例，合理增加密度，有利于产量与品质协调发展，实现优质高产。