Greenhouse tomato cropping with under-mulch drip irrigation is common in arid and semi-arid Northwest China. To investigate the influence of drip-line layout and irrigation amount on yield, fruit quality, irrigation water use efficiency, and comprehensive benefit of tomato production, the experiment was conducted during two cropping seasons of spring to summer in 2015 and winter in 2015 to spring in 2016. In these two cropping seasons, two drip-line layout types were conducted, including a one drip-line for each plant-row and a one drip-line for two plant-rows, with four levels of irrigation amount, i.e., 0.6, 0.8, 1.0, and 1.2 times of accumulated evaporation of a 20 cm standard pan. The results showed that one drip-line for two plant-rows outperformed one drip-line for each plant-row in achieving higher yield and irrigation water use efficiency with the same irrigation amount. In these two drip-line layouts, tomato yield increased at first and then decreased with the increase of irrigation amount; while irrigation water use efficiency decreased all the way with the increase of irrigation amount. A principal component analysis demonstrated that the combination of one drip-line for each plant-row and 1.0 times of pan evaporation obtained the highest comprehensive fruit nutritional quality among all combinations of drip-line layout and irrigation amount in spring-summer season; while the combination of one drip-line for two plant-rows and 0.8 times of pan evaporation had the highest comprehensive fruit quality in winter-spring season. To purse high comprehensive benefits, combinations of one drip-line for two plant-rows and 0.8 times of pan evaporation, and one drip-line for each plant-row and 0.6 times of pan evaporation should be recommended for spring-summer and winter spring cropping seasons, respectively. The findings of this study can provide irrigation guidance for greenhouse tomato growing in Northwest China.

在干旱和半干旱的西北地区，采用膜下滴灌的温室番茄种植很常见。为研究滴灌线布局和灌水量对番茄产量、果实品质、灌溉水分利用效率和综合效益的影响，在2015年春至夏和2015年冬至春两个种植季节进行试验。 2016年，在这两个种植季节，进行了两种滴水线布局类型，包括每株一滴线和两株一滴线，灌溉量分为四个等级，即： 0.6、0.8、1.0、1.2倍20cm标准盘的累积蒸发量。结果表明，在相同灌溉量的情况下，两株行一根滴水线优于每株行一根滴水线，可实现更高的产量和灌溉用水效率。在这两种滴灌线布局中，番茄产量随着灌水量的增加呈现先增后减的趋势；而灌溉用水效率则随着灌溉量的增加而下降。主成分分析表明，春夏时节滴水线布局和灌水量的所有组合中，每株滴灌1.0倍盘蒸发1.0倍的组合果实综合营养品质最高；而一根滴水线用于两株植物和0的组合。8次盘蒸发的冬春季综合果实品质最高。为追求较高的综合效益，春夏、冬春季推荐采用两株滴灌0.8倍锅蒸发、每株滴灌0.6倍锅蒸发的组合。种植季节，分别。本研究结果可为西北地区温室番茄种植提供灌溉指导。