东北地区黑穗醋栗营养状态研究

A Study on Nutrition Status of Black Currant in Northeast

东北地区黑穗醋栗普遍存在着潜在缺K和元素间平衡关系失调的问题。叶片中K素含量偏低,而P和Mg含量偏高;叶片中N含量在一部分果园偏高,而另一部分果园偏低;叶片中微量元素含量基本处于正常范围。施肥与否和不同产量条件对叶片中元素含量有明显的影响。改变现行的重视N肥而进行合理施肥,尤其是增施K肥是改善黑穗醋栗营养状况的有效途径。

The mineral nutrition status of black currant in Northeast of China was studied by leaf analysis. The result indicated that K deficiency and imbalance between elements were the main problems of black currant culture in Northeast.Leaf K content was lower, but leaf P and leaf Mg contents were higher; Leaf N contents were higher in some orchards but lower in other orchards. Mineral nutrition were influenced by fertilization and different yields. Suitable fertilization, especially K fertilizer, was the effective way to improve nutrition level of black currant.