品种与密肥措施对元麦籽粒产量及其β-葡聚糖含量的影响

围绕制作"冷蒸"元麦原料种植,进行了品种筛选和氮肥运筹与播种量试验。结果表明:根据穗层相对整齐、灌浆速度较快、抗倒性较强、籽粒产量和β-葡聚糖含量要高的要求,筛选出了苏裸麦2号、通麦6号、苏裸麦1号等为优先选用品种;氮肥运筹和播种量试验处理中,其籽粒产量介于4988.70~5990.55 kg/hm^2、β-葡聚糖含量介于3.31%~3.77%之间。3种氮肥运筹方式的主处理对籽粒产量无显著影响,但对籽粒β-葡聚糖含量影响显著。随着播种量上升单位面积的籽粒产量增加,但播种量增加至210 kg/hm^2时产量下降。播种量对籽粒β-葡聚糖含量没有显著的影响。综合籽粒产量和β-葡聚糖含量,增强植株抗倒性、青穗早采摘等要求,制作"冷蒸"的元麦种植,以播种量150~180 kg/hm^2,基苗肥中N占比60%~70%、拔节孕穗肥N占比30%~40%为宜。

Elemental Content in Wheat Products of Asir Region, Saudi Arabia

Wheat is one of the most grown crops in Saudi Arabia. Accurate knowledge of the various elemental concentrations in wheat and its products （bran and flower） is of great importance from nutrition point of view. Wheat samples were obtained from Asir region, 900 Km southern of Riyadh, and analyzed. Up to 50 elements in wheat products were determined. It was observed that the mineral content of bran was much higher than white flour.