Caper (Capparis spinosa L.) is an ancient plant with ecological, industrial, medicinal and economical benefits which at its primary growth phase is sensitive to salt stress. This study was conducted to investigate the biostimulant effect of supplementing crushed maize (Zea mays L.) seeds (CMS) (0, 10 and 20 %) into growing media on caper salt tolerance and soil biological activity under different salinity level (0, 5, 10 and 15 dS/m). Applying 20 % biostimulant increased the number of leaves and roots by 200.0 and 56.0 %, respectively, compared with untreated seedlings at the same salinity level. The application of 20 % biostimulant also enhanced the proline content (by 40.5 %), total phenolic contents (34.0 %), rutin (356.4 %) and leaf K content (29.8 %) of treated capers compared with untreated seedlings. Applying 20 % biostimulant also significantly increased the soil enzymes activity including urease, dehydrogenase, and phosphatase as well as soil bacteria population. Whereas, using biostimulant significantly decreased the content of Na in different caper’s organs. However, the total flavonoid content, soil fungi population and most of the morphological parameters of caper were not significantly affected by the application of CMS. In total, the soil application of CMS had a substantial effect on physiological and biochemical parameters of salinized capers and soil biological activity based on principal component analysis (PCA). In conclusion, using CMS as a soil supplement can be recommended as a safe and natural biostimulant to alleviate the negative impacts of salt stress in caper seedlings.

雀跃（Capparis spinosa L.）是一种古老的植物，具有生态，工业，医学和经济优势，在其初级生长阶段对盐胁迫敏感。进行这项研究的目的是研究补充压碎玉米（玉米）的生物刺激效果。L.）种子（CMS）（0％，10％和20％）在不同盐度水平（0、5、10和15 dS / m）下对刺山柑耐盐性和土壤生物活性的影响。与相同盐度水平下未处理的幼苗相比，施用20％的生物刺激剂可使叶和根的数量分别增加200.0和56.0％。与未处理的秧苗相比，施用20％的生物刺激剂还增加了处理过的刺山柑的脯氨酸含量（提高了40.5％），总酚含量（34.0％），芦丁（356.4％）和叶K含量（29.8％）。施用20％的生物刺激剂还可以显着提高土壤酶的活性，包括脲酶，脱氢酶和磷酸酶以及土壤细菌的数量。然而，使用生物刺激剂显着降低了不同刺山柑器官中的Na含量。但是，总黄酮含量 CMS的应用对土壤真菌种群和刺山柑的大多数形态学参数没有显着影响。总体而言，基于主成分分析（PCA），CMS在土壤中的应用对盐渍雀跃的生理生化参数和土壤生物活性具有重大影响。总之，可以建议使用CMS作为土壤补充剂，作为安全和天然的生物刺激剂，以减轻盐胁迫对雀跃幼苗的不利影响。