播期对啤酒大麦开花期形态指标、产量及品质的影响

为给不同用途大麦高产、优质栽培适宜播期的确定提供参考,在大田条件下,以港啤1号、扬农啤2号、苏引麦3号、单2等4个大麦品种为材料,分析了播期对冬大麦开花期形态指标、产量和品质的影响以及形态指标与产量和品质的相关性。结果表明,随着播期的推迟,大麦产量、千粒重、开花期叶面积指数和干物重呈减少趋势,开花期单茎茎鞘重、籽粒蛋白质和淀粉含量呈增加趋势。产量在早播时与开花期单茎茎鞘重和叶面积指数正相关;适播时与开花期干物重和单茎茎鞘重正相关;迟播时与开花期单茎茎鞘重负相关,与叶面积指数正相关。千粒重早播时与开花期干物重和叶面积指数负相关,适播和迟播时与开花期单茎茎鞘重和叶面积指数负相关。籽粒蛋白质含量在早播和晚播时与开花期干物重和叶面积指数正相关;适播时与开花期单茎茎鞘重和叶面积指数正相关。各个播期下籽粒淀粉含量与开花期单茎茎鞘重和叶面积指数负相关。

Effect of Sowing Date on Flowering Morphological Index,Yield and Quality in Winter Barley

Four winter barley cultivars,named Gangpi 1,Yangnongpi 2,Suyinmai 3 and Dan 2,were used to study the flowering morphological index,yield and quality on different sowing date and the correlation bewteen morphological index and yield and quality.The results showed that,with the postponement of sowing date,the yield,1000-grain-weight,flowering leaf area index and dry matter weight decreased,and single stem weight,protein and starch content increased.On early sowing date,the yield was positive correlated with flowering single stem weight and leaf area index.On appropriate sowing date,the yield was positive correlated with flowering dry matter weight and single stem weight.On late sowing date,the yield was negative correlated with flowering single stem weight,and positive correlated with flowering leaf area index.On early sowing date,1000-grain-weight was negative correlated with flowering dry matter weight and leaf area index.On appropriate and late sowing date,1000-grain-weight was negative correlated with flowering single stem weight and leaf area index.On early and late sowing date,the protein content was positive correlated with flowering dry matter weight and leaf area index.On appropriate sowing date,the protein content was positive correlated with flowering single stem weight and leaf area index.On early,appropriate and late sowing date,the starch content was negative correlated with flowering single stem weight and leaf area index.