黄土丘陵山地枣树不同灌溉方式等量灌水试验结果表明,根际滴灌技术灌溉水利用率和增产效益显著,滴灌和根际滴灌产量比不灌溉分别增产12 075kg·hm~(-2)、15 150kg·hm~(-2),WUE(水分利用率)滴灌提高66.94%;根际滴灌为72.07%,净增收入分别为62 536.0和76 086.0元·hm~(-2)。田间管道根际滴灌比地表滴灌使用寿命期长,滴灌和根际滴灌的管道系统年使用折旧期分别为8a和12a。
The experiments on same amount of water for Jujube irrigation in different methods showed that rhizosphere drip irrigation technology is efficient and beneficial.Drip and rhizosphere drip irrigation can increase the yield 12 075 kg and 15 150kg·hm~(-2) respectively over that of non-drip irrigation,with WUE of drip irrigation increased 66.94% and 72.07%.The net income has been increased by 62 536.0and 76 086.0yuan·hm~(-2) respectively.Furthermore,the pipes for rhizosphere drip irrigation can used longer than that of the surface drip irrigation and their depreciation period of use is 8 and 12 years respectively.