Foliar application of nutrient is more efficient than soil-applied. In this project the effect of calcium nitrate and potassium nitrate on qualitative and quantitative traits was investigated in seedless barberry (Berberis vulgaris L.). Seedless barberry shrubs with different reproductive statuses (ON and OFF) were treated with spraying of calcium nitrate (Ca(NO₃)₂) or potassium nitrate (KNO₃) solutions at concentration of 0.5% and distilled water (as control) four times during different fruit growth and development stages. The results showed that foliar application of both chemical salts significantly increased the number of clusters per branch, the number of berries per branch and the number of berries per cluster in 2017. The highest and the lowest number of clusters per branch, and the number of berries per branch were obtained in KNO₃ and control treatments, respectively in 2018. Also, the greatest number of berries per cluster was recorded in treated plants with Ca(NO₃)₂ in 2018. The nitrogen content of fruit was higher in Ca(NO₃)₂ treatment. The highest fruit calcium content was obtained in Ca(NO₃)₂ treatment in both seasons. Berries treated with distilled water (control) were redder, and the fruits treated with Ca(NO₃)₂ and KNO₃ (0.5%) were brighter in the 2017 season. However, the quality of treated fruit with Ca(NO₃)₂ and KNO₃ (0.5%) was higher than the control in both years. The results showed that foliar spraying with Ca(NO₃)₂ and KNO₃ significantly improved the qualitative and quantitative characteristics of barberry fruit compared to the control.

叶面施用养分比土壤施用更有效。在该项目中，研究了无核伏牛（小Ber  ）中硝酸钙和硝酸钾对定性和定量性状的影响。通过喷洒硝酸钙（Ca（NO ₃）₂）或硝酸钾（KNO ₃）处理具有不同繁殖状态（开和关）的无核伏牛花灌木）在不同的果实生长和发育阶段，将浓度为0.5％的溶液和蒸馏水（作为对照）进行四次。结果表明，2017年两种化学盐的叶面施用显着增加了每个分支的簇数，每个分支的浆果数和每个簇的浆果数。每个分支的簇数最高和最低，以及在2018年分别通过KNO ₃和对照处理获得了每个分支的浆果。此外，在2018年用Ca（NO ₃）₂处理的植物中，每簇的浆果数量最高。在Ca（NO ₃）中果实的氮含量更高NO ₃）₂治疗。在两个季节中，Ca（NO ₃）₂处理均获得最高的水果钙含量。用蒸馏水（对照）处理的浆果较红，用Ca（NO ₃）₂和KNO ₃（0.5％）处理的果实在2017季节更亮。然而，两年中用Ca（NO ₃）₂和KNO ₃（0.5％）处理的水果的质量均高于对照。结果表明，与对照相比，叶面喷施Ca（NO ₃）₂和KNO ₃显着改善了伏牛果的定性和定量特性。