盐渍土区不同灌水对小麦生长发育和产量的影响

The effect of different irrigation on growth and yield of wheat on the salinized soil

本文探讨了不同灌水 (灌水期、灌水量和水质 )对冬小麦生长发育和产量的影响。结果表明 :咸淡轮灌与灌淡水比 ,早期干物质积累慢 ,L AI低 ,但后期积累养分能顺利转移到穗部 ,灌浆速度较快 ,也能获得高产。冬后关键期灌水 ,咸淡轮灌比灌淡水处理LAI较低 ,但茎叶干物质积累量较多的转移到籽粒中 ,灌浆速度快 ,二者籽粒产量无显著差异。关键期灌水处理的籽粒产量略低于充足灌水处理 ,但水分利用率较高。在充足灌水的基础上 ,施肥处理的 L AI。

In this paper,the effects of different irrigation on growth and yield of wheat were studied.The result showed:When Salt water and fresh water irrigation in turn contrasted with fresh water irrigation,the former effect was that accumulation speed of dry matter was slower and LAI was lower in the early period of wheat,but its speed of being in the milk was faster,grain yield was higher than the latter.When Salt water and fresh water irrigation in turn contrasted with fresh water irrigation on key period of wheat after winter,the former effect was that LAI was higher and speed of being in the milk was faster than the latter,there was no significant difference of grain yield between the former and the latter.Water utilization ratio of wheat was higher on the treament of key period irrigation than the treatment of sufficient water irrigation,its yield was slightly lower than the latter.When sufficient irrigation is given,the fertilized treatment was that LAI and grain yield were higher and speed of being in the milk was significantly faster than the non-fertilized treatment.