干旱地区农业研究2012，Vol.30Issue(6)：60-67,8.
极端干旱区滴灌条件下葡萄茎流变化规律研究
Experiments on variation of grape sap flow under drip irrigation in extremely arid areas
摘要
Abstract
To explore the variation law and affecting factors of grape sap flow under drip irrigation, the Flow4 - DL was used under furrow irrigation and drip irrigation in extremely an arid areas. The variation of sap flow rates, meteorological factors and relationship between daily sap flow and reference crop evapotranspiration were studied. The results showed that diurnal variation of grape sap flow rates displayed single peak curves in sunny day, and multi peaked curves in cloudy day. With partial correlation analysis to each environmental factor and sap flow, it was obtained that the sap flow was highly significantly correlated with photosynthetic active radiation and wind speed, significantly correlated with saturated vapor pressure, but not significantly correlated with air temperature and air humidity. The sequence of correlation degree was: photosynthetic active radiation > wind speed > saturated vapor pressure > air humidity > air temperature. The multiple stepwise regression analysis showed that there is a strong linear relationship between sap flow and photosynthetic ally active radiation, wind speed, saturated vapor pressure, and the regression equation achieved a highly significant level. It showed significant linear correlation between daily sap flow and reference crop evapotranspiration under furrow irrigation and drip irrigation, and the correlation degree of furrow irrigation was higher than that of drip irrigation.关键词
葡萄/滴灌/茎流/气象因子/参考作物蒸发蒸腾量Key words
grape/ drip irrigation/ sap flow/ meteorological factors/ reference crop evapotranspiration分类
农业科技引用本文复制引用
南庆伟,王全九,苏李君..极端干旱区滴灌条件下葡萄茎流变化规律研究[J].干旱地区农业研究,2012,30(6):60-67,8.基金项目
国家科技支撑计划(2011BAD29B05) （2011BAD29B05）
