氮肥对啤酒大麦籽粒品质的影响

Effect of Nitrogen on Grain Quality of Malt Barley

以优质啤酒大麦品种扬农啤2号为材料,研究施氮量、氮肥运筹对啤酒大麦籽粒品质的影响。结果表明:①随着施氮量的增加,籽粒蛋白质含量上升,淀粉含量降低;②氮肥运筹技术对籽粒蛋白质含量和积累速率有明显的调控作用,后期施氮量增加,有利于蛋白质含量增加和积累速率提高;③在本试验条件下,扬农啤2号在施氮量为150 kg·hm-2、基、苗、拔节肥比例为7:1:2、基本苗为225万·hm-2的栽培技术组合下,可获得单产8 000 kg·hm-2,蛋白质含量、千粒重、容重、发芽势和发芽率等品质指标均达到优级标准。

With high-quality malt barley Yangnongpi 2 as the testing material, the effects of nitrogen amount and application on grain quality were studied. The main results were as follows; ① Grain protein content increased and grain starch content decreased as the increase of nitrogen application amount; ② Nitrogen application produced a profound regulation effect on grain protein content and accumulation. The protein content and its accumulating rate increased as the increased nitrogen at the later development period; ③ Under the experimental conditions, by adopting the combination of 225×104 · hm-2 plants, 150 kg · hm-2 N and basal : seedling : stem pushing N 7: 1: 2, the grain yield reached 8 000 kg · hm-2, protein content, thousand-grain weight, natural weight, germination viability and germination percentage met the temporary industrial standards of high quality barley