调亏灌溉对滴灌葡萄耗水规律及产量的影响研究

试验表明,在葡萄萌芽期、抽穗期控制灌水下限为田间持水率的40%,葡萄产量最大,达到12 439.5kg/hm2;在开花期、果实膨大期分别控制灌水下限为田间持水率的40%、50%可以起到疏花的作用,果粒质量和果实直径最大,但是产量最小,为10 486.5 kg/hm2;在着色成熟期控制灌水下限为田间持水率的45%,葡萄产量为11 934 kg/hm2。研究所得结论对滴灌葡萄的调亏灌溉应用有一定指导意义。

Effects of Regulated Deficit Irrigation on Water Consumption and Yield of Grape

The passage analyses the water consumption character and yield variation of grapes under the drip irrigation.The experiment illustrated that the limit of irrigation is controlled at 40% of the field capacity during the grape sprout period and he heading date,and the grape yield is the biggest up to 12 439.5 kg/hm2.The limit of irrigation is controlled at respectively 40% and 50% of the field capacity during the bloom and fruit swelling period,which could make the flower reducing,increasing the fruit weight and having the biggest fruit,but the yield is the smallest one(10 486.5 kg/hm2).The limit of irrigation is controlled at 45% of the field capacity during the dyeing mature period,and the yield is 11 934 kg/hm2.The conclusion has some instructions for the application of regulated deficit irrigation of grape under the drip irrigation.