水分胁迫对桶栽冬小麦产量和品质的影响

通过对桶栽冬小麦在拔节期和灌浆期设计不同水分胁迫处理,研究了不同程度、不同时期水分胁迫对冬小麦产量和品质的影响,分析了产量和品质的相关关系。结果表明,灌浆后期干旱可明显提高小麦品质,当籽粒蛋白质含量在14%~16%之间时,高产和优质的矛盾不突出;拔节、灌浆期任何程度的水分胁迫都将导致产量下降,重度胁迫下降幅度较大;拔节期干旱对有效穗数、穗粒数和产量影响大,而对千粒重影响最敏感的时期是灌浆期,拔节、灌浆生育后期胁迫处理对产量及其构成因子的影响比前期小;灌浆期土壤相对含水率控制在55%~70%之间可实现节水、高产、优质三者的协调统一。

Effects of Water Stress on Yield and Quality of Barreled Winter Wheat

Barreled experiments were carried out to study the effects of different degree and period of water stress on the yield and quality of winter wheat at the jointing and filling stage,and the correlativity between yield and quality was analyzed.The result showed that drought at the late filling stage increased the quality of grains obviously,and the contradiction between high yield and high quality was not obvious when the protein content of grain was 14% to 16%.Various water stresses at the jointing stage and...