【摘要】 在池栽防雨条件下 ,研究了小麦花后不同灌水时期、不同灌水次数对籽粒产量及品质性状的影响。结果表明 ,在花前限量灌水条件下 (135mm) ,花后灌水 (4 5～ 90mm)可显著提高小麦籽粒产量及蛋白质产量 ;虽然多数品质性状在花后不灌水 (CK)条件下获得最大值 ,但灌 1水未引起品质性状的明显变化 ;随灌水次数增加 ,各品质性状变劣 ,其中灌 2水或灌 4水使部分品质性状显著或极显著下降。不同品种对灌水反应有明显差异 ,其中豫麦 34较为敏感 ,灌水量与面团形成时间、稳定时间、评价值及弱化度显著相关 ;洛阳 8716品质性状相对较稳定 ,受灌水量影响的主要是蛋白质含量、评价值和拉伸阻力。作者据此对小麦保优节水栽培、提高水分利用率提出了建议。更多还原

【Abstract】 Effects of post-anthesis irrigations on grain end-use quality and yield of winter wheat were tested under rain-sheltered pot-culture conditions with two cultivars, Yumai 34 (a strong gluten wheat) and Luoyang 8716 (a medium-strong gluten wheat). The results indicated that under a controlled irrigation (135 mm) prior to anthesis, post-anthesis irrigation (45-90 mm) significantly increased grain and protein yield. Although the maximum of quality indices was obtained in non-irrigated treatments, no significant difference was observed between non-irrigated treatments (CK) and treatments just irrigated once. Grain quality significantly decreased with the increase of irrigation times from 2 to 4. Cultivars differed in quality response to irrigation. Yumai 34 was more sensitive to irrigation, compared with Luoyang 8716. Flour forming time, stable period, evaluation value, and softness of Yumai 34 were significantly correlated with irrigation amount (α=0.05). However, grain quality indices of Luoyang 8716 were relatively stable, with an exception that protein content, evaluation value, and anti-tension resistance showed significant variations (α=0.05). Some suggestions were also put forward for realizing high yield and quality of winter wheat and increasing water use efficiency (WUE) in wheat cultivation.更多还原