矿质营养对玉米籽粒营养品质的影响

Effects of mineral nutrition on quality of maize grain

本文介绍了氮、磷、钾、锌、锰、铜、硒及稀土对普通玉米、高赖玉米和甜玉米籽粒营养品质的影响，适量施肥可明显提高籽粒蛋白质、脂肪、氨基酸等成分的含量。单独施氮肥虽然能显著提高蛋白质含量，却降低了蛋白质的营养价值．氮、磷、钾配合使籽粒品质明县改善、普通玉米和高赖玉米籽粒品质对矿质养分的反应有差别．

The-quality of maids (Zea moays L. )grain was obviously affected by N,P,K, Zn, Mn, Cu, Se and rare-earth elements. The contents of grain protein, oil, and aminoacids increased significantly when .fertilizers were used properly. But the nutrition. valueof grain protein was degraded if N was Used only. The effects of mixed nutrition of N,P,K on grain quality improvement were better than that of any single element Differentresponses to mineral nutrition were found between normal and opaque-2 maize.