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在田间条件下,以两个优质强筋小麦品种(藁城8901和济麦20)为供试材料,研究了不同灌水处理(全生育期不灌水、拔节期灌1次水、越冬期和拔节期灌2次水、越冬期、拔节期和灌浆期灌3次水,每次灌水量675 m3·hm-2)对强筋小麦谷蛋白大聚合体含量与粒度分布、品质和产量的影响.结果表明:两个小麦品种的面团形成时间、面团稳定时间、面包体积、籽粒产量、谷蛋白大聚合体含量以及体积加权平均粒径、表面积加权平均粒径、粒径>100μm的体积百分比和表面积百分比均以灌2水处理最高.相关分析显示,两个小麦品种的面团形成时间、面团稳定时间和面包体积与粒径<10μm和10~100μm的谷蛋白大聚合体颗粒体积百分比呈显著负相关,而与粒径>100μm的谷蛋白大聚合体颗粒体积百分比、体积加权平均粒径和表面积加权平均粒径呈显著正相关.水分供应过多或过少均不利于籽粒产量和品质的同步改善,灌溉水平可通过改变谷蛋白大聚合体粒度分布影响小麦籽粒品质.
Under field conditions, two high-quality strong gluten wheat cultivars (Tancheng 8901 and Jimai 20) were used as experimental materials to study the effects of different irrigation treatments (no irrigation during the whole growth period, 1 irrigation during jointing stage, overwintering stage and jointing stage 2 irrigation periods, 3 irrigation water during winter, jointing stage and grain filling stage, 675 m3 · hm-2 irrigation amount per irrigation) on the content, grain size distribution, quality and yield of strong gluten wheat gluten polymer. The results showed that the dough forming time, the dough stability time, the bread volume, the grain yield, the big gluten polymer content, the volume weighted average grain size, the surface area weighted average grain size, the volume percentage with the grain size> 100 μm and the surface area The percentages were all highest in irrigation with water 2. Correlation analysis showed that the dough forming time, dough stability time and bread volume of two wheat cultivars were significantly negatively correlated with the volume percentage of grains of large aggregates of glutelin with particle size <10μm and 10-100μm , While there was a significant positive correlation with the volume percentage, the volume weighted average particle size and the surface area weighted average particle size of the large polymer particle of> 100μm.The excessive or too little water supply was not good for the grain The simultaneous improvement of yield and quality, irrigation level can affect wheat grain quality by changing the particle size distribution of large gluten polymer.