不同微灌方式对成龄库尔勒香梨生长及耗水规律的影响

采用3种微灌方式：地表滴灌、地下滴灌与微喷灌，以传统的漫灌为对照,利用负压计和石膏块监测果树根区土壤水势，观测不同生育阶段果树的生长指标，用水量平衡法计算梨树不同生育期的日均耗水量、作物系数与蒸发皿系数。研究结果表明,充分灌溉条件下,地表滴灌、地下滴灌与微喷灌生育期内的灌水量较漫灌分别减少了63.91％、68.4％、5...

Effects of Micro-irrigation Modes on the Growth and Water Consumption of Mature Korla Fragrant Pear Trees

The irrigation methods included three kinds of micro-irrigation methods,surface drip irrigation,subsurface drip irrigation,and micro-sprinkler irrigation,and the traditional flood irrigation was used as control.Soil water potential in the root zone was monitored by a tensionmeter and gypsum blocks.The growth indices of fruit tree were recorded at different growth stages.The daily water use,crop coefficients and pan coefficients under different micro-irrigation treatments were estimated by water balance method.The results indicated that the tree water uses under micro-irrigation methods,surface drip irrigation,subsurface drip irrigation,and micro-sprinkler irrigation,decreased by 63.91%,68.4%,and 57.59% respectively as compared with that under flood irrigation,while the shoot growths,reduced slightly,by 5.0%,6.4% and 3.1%.Compared with the flood irrigation,the fruit volumes under the micro-irrigation treatments of different wetted percentage were all bigger,with the largest under surface drip irrigation treatment.Moreover,the fruit quality under micro-irrigation treatments was improved to some extent.