研究了不同灌溉方式下施钾方式对番茄光合特性、产量及品质的影响,旨在为设施栽培条件下水、肥科学管理提供理论依据。结果表明,同一灌溉方式下,钾随水施处理的番茄叶片净光合速率以及水分利用效率显著高于钾肥常规施入的;同一施钾方式下,滴灌能显著提高番茄叶片的净光合速率、蒸腾速率、气孔导度以及番茄产量。灌溉方式和施钾方式单独对番茄叶片的净光合速率、气孔导度、蒸腾速率、水分利用效率以及番茄产量有显著影响。灌溉方式和施钾方式的交互作用对气孔导度和胞间CO2浓度影响显著。施钾方式能明显改善番茄品质,但灌溉方式及灌溉方式和施钾方式的交互作用对品质影响不显著。因此,在氮磷充足的情况下,滴灌条件下钾肥随水施入能显著提高番茄产量以及光合性能,并能改善番茄品质。 The effects of different K application methods on photosynthetic characteristics, yield and quality of tomato under different irrigation modes were studied in order to provide theoretical basis for the scientific management of water and fertilizer under the condition of facility cultivation. The results showed that under the same irrigation mode, the net photosynthetic rate and water use efficiency of tomato leaves treated with water were significantly higher than those routinely applied with potash fertilizer. Under the same potassium application, drip irrigation significantly increased the net photosynthetic rate and transpiration of tomato leaves, Rate, stomatal conductance and tomato yield. Irrigation method and K application had significant effects on the net photosynthetic rate, stomatal conductance, transpiration rate, water use efficiency and tomato yield of tomato leaves alone. Interaction between irrigation and K application had a significant effect on stomatal conductance and intercellular CO2 concentration. Potassium application could obviously improve the quality of tomato, but the interaction between irrigation methods and irrigation methods and K application methods had no significant effect on quality. Therefore, under the conditions of sufficient N and P fertilization of potash with water under drip irrigation, the yield and photosynthetic characteristics of tomato could be significantly improved, and the quality of tomato could be improved.