为支撑蔬菜穴盘育苗潮汐灌溉技术应用，筛选番茄穴盘育苗最优潮汐灌溉制度，以“硬粉8号”番茄为试材，采用L4（23）正交试验设计，分析番茄穴盘苗生长及生理变化、基质性质和灌水量指标。结果表明，T3的番茄穴盘苗生育期提前，生长势强，壮苗指数、光合效率和根系活力高。与顶部洒水灌溉处理（T1和T2）相比，潮汐灌溉处理（T3和T4）的基质电导率低，灌溉量小。3因素对植株鲜重、植株干重、壮苗指数、G值、净光合速率和根系活力影响最大的均是灌溉频率，对灌溉量影响最大的是灌溉方式。总结出番茄穴盘育苗最优灌溉制度是A2B1C2，即灌溉方式为潮汐灌溉，灌溉频率为每2 d 1次，灌溉时间为下午16:00。
In order to promote the ebb and flow irrigation technology in vegetable seedling production and select an optimal ebb and flow irrigation system for tomato, an L4(23) orthogonal experimental design was conducted using ‘Yingfen No. 8’ tomato. Tomato plug seedling growth, physiological changes, matrix properties, and irrigation indexes were analyzed. The results showed that tomato seedling growth, seedling index, photosynthetic efficiency, and root activity of T3 were the highest. Compared with the top sprinkling irrigation (T1 and T2), the EC of the substrate and the irrigation volume of the ebb and flow irrigation treatments (T3 and T4) were the lowest. Irrigation frequency was the most important factor affecting plant fresh weight, plant dry weight, G value, net photosynthetic rate, and root activity, while irrigation method was the most important factor affecting the irrigation amount. In summary, the optimal irrigation system for tomato seedling production was A2B1C2, i.e. using the ebb and flow irrigation method at the irrigation frequency of 1 time/2 d and irrigating plants in the afternoon (16:00).