黑穗醋栗叶面喷施稀土溶液,低浓度处理明显促进新梢加长、加粗生长,增大叶面积,提高坐果率、百果重和单株产量,促进叶片对氮、磷、钾的吸收,提高叶片的硝酸还原酶活性;高浓度处理(>800mg·1~(-1))对黑穗醋栗的促进作用效果不明显,有些指标低于对照。据此,在黑穗醋栗上每年叶面喷施两次300～800mg·1~(-1)稀土溶液较为适宜。 Rare blackcurrant foliar sprayed with rare earth solution, low concentration treatment significantly promote the shoots longer, bold growth, increase leaf area, increase fruit set, fruit weight per plant and yield per plant, and promote leaf nitrogen, phosphorus and potassium Absorption and increase nitrate reductase activity of leaves. High concentration treatment (> 800mg · 1 ~ (-1)) had no significant effect on the growth of black currant and some indicators were lower than the control. Therefore, it is more appropriate to spray 300 ~ 800 mg · 1 ~ (-1) rare earth twice a year on black currant.