间接地下滴灌下灌水量对枣树生理特征及果实品质的影响

通过小区试验，以地表滴灌为对照，探究红枣间接地下滴灌模式下水分的分布特征及不同灌水量对枣树生理生态指标、产量、品质的影响。间接地下滴灌下，最大的含水率出现在15~30cm土层处；而地表滴灌下，最大的含水率出现0~10cm土层处。枣树各生理生态指标，随灌水次数的增加，各处理性状差异逐渐增大，间接滴灌下中供水和高等供水枣树长势较好，低供水处理下红枣的糖分含量高，中供水处理下红枣的有机酸和VC含量高；地表滴灌处理枣树的平均单株产量高，但水分利用率最低，中供水处理不明显降低红枣单果质量和平均单株产量的前提下可以提高水分利用率；综合考虑枣树长势、产量、果实品质及水分利用率，中供水是间接地下滴灌下最佳的灌水量。

The effect of irrigation amount on physiological characteristics and quality of fruit of jujube under indirect subsurface drip

Through plot experiment，explore jujube indirect subsurface drip mode of water distribution and effects of different irrigation on physiological and ecological indicators jujube, yield and quality. surface drip irrigation as the control treatment Indirect subsurface drip irrigation, the maximum moisture content of 15 ~ 30cm soil in place, while the surface drip irrigation, 0 ~ 10cm soil moisture content at the maximum. Jujube various physiological and ecological indicators, with the irrigation frequency increases, the difference between each treatment trait increases; indirect subsurface drip irrigation, secondary water supply and higher water supply jujube growing well; jujube under low water treatment sugar content is high, secondary water treatment， jujube content of organic acids and VC are higher; surface drip irrigation, the average yield per plant jujube high, but the lowest water use efficiency Secondary water treatment is not obvious decrease jujube fruit weight and the average yield per plant under the premise can improve water use efficiency; Considering jujube growing, yield, fruit quality and water use efficiency, Secondary water supply is the best of indirect subsurface drip irrigation.