Effects of Regulated Deficit Irrigation on Wine Grape Water Consumption Characteristics and Water Production Function
Abstract：To determine the wine grape water production function,the experiment was performed by using water deficit irrigation in different growth periods of wine grape to research the effects of soil water conditions on water consumption and yield at different growth period of wine grape,the field soil water content,water consumption, yield and water use efficiency with drip irrigation were studied,and Merlot was used as test material.The results showed that the effects of soil water deficit on yield were related with growth periods of wine grapes.The effect of water deficit at the berry enlargement period was the largest on yield,and then followed by florescence period, coloring maturity period and pumping vine period,and germination period.Comparing the Blank model with Jen-sen model,it was concluded that Jensen model was more reasonable.Then the water sensitivity index was calcu-lated by the Jensen model.The order was berry enlargement period>florescence period>coloring maturity peri-od>pumping vine period>germination period,which was similar to the water consumption.Maintaining soil moisture between 60%~65%of field water capacity would not reduce the yield at germination period,pumping vine period and coloring maturity period,and well watered at berry enlargement period would get high yield with good water use efficiency.
Keywords：regulated deficit irrigationwine grapewater consumption characteristicswater production function
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 93-100 )