Parsley (Petroselinum crispum L.) is widely used in food, medicine, cosmetics, and pharmaceutical industries. This research was conducted to determine the effect of six different irrigation water salinities (S₁ = 0.38, S₂ = 1.5, S₃ = 2.5, S₄ = 4, S₅ = 7 and S₆ = 10 dS m⁻¹) and two levels of foliar application of salicylic acid (SA₁ = 0 mM and SA₂ = 2 mM) on yield, yield parameters, and antioxidant enzyme activity of parsley. Increasing salinity reduced the fresh weight, plant height, evapotranspiration, chlorophyll content, and stomatal conductance (g_s), whereas foliar salicylic acid application positively affected the vegetative growth parameters. Salinity and foliar application of salicylic acid significantly affected total protein, peroxidase (POD), and glutathione S‑transferase (GST) activities. The POD and GST activities increased as salinity increased to 4.0 dS m⁻¹ and 2.50 dS m⁻¹, respectively. Fresh weight highly correlated with stomatal conductance (g_s) (r = 0.725**), chlorophyll content (r = 0.366*) and GST (r = 0.646**). The application of 2 mM salicylic acid to parsley under salinity stress decreased the negative effect on growth and increased its fresh weight.

香菜（Petroselinum crispum L.）被广泛用于食品，医药，化妆品和制药行业。进行这项研究以确定六个不同灌溉水盐度的影响（S ₁  = 0.38，S ₂  = 1.5，S ₃  = 2.5，S ₄  = 4，S ₅  = 7和S ₆  = 10 dS m ^-1）和水杨酸的两个叶面施用水平（SA ₁  = 0 mM和SA ₂  = 2 mM）对欧芹的产量，产量参数和抗氧化酶活性有影响。盐分增加会降低鲜重，株高，蒸散量，叶绿素含量和气孔导度（g _s）。），而叶面水杨酸的施用对营养生长参数有积极影响。水杨酸的盐度和叶面施用显着影响了总蛋白，过氧化物酶（POD）和谷胱甘肽S-转移酶（GST）的活性。随着盐度分别增加到4.0 dS m ^-1和2.50 dS m ^-1，POD和GST活性增加。新鲜体重与气孔导度（g _s）（r = 0.725 **），叶绿素含量（r = 0.366 *）和GST（r = 0.646 **）高度相关。在盐分胁迫下向香菜中添加2 mM水杨酸可减少对生长的负面影响，并增加其鲜重。