美味猕猴桃米良1 号营养元素及其季节变化

报道了湘西耕型石灰岩红黄壤栽培的美味猕猴桃米良1号( Actinidia deliciosa cv. Miliang- 1)营养器官与果园土壤氮磷钾3种营养元素含量及其季节变化的测定结果.结果显示: 植物体内的全氮含量以根中较高, 叶与茎次之; 而全磷和全钾则以叶中较高,茎与根次之. 同时对植物体内3种营养元素含量的变化规律, 以及植物体营养元素含量变化与土壤营养状况的关系进行了讨论,并根据这些结果对现行栽培条件下的美味猕猴桃米良 1号的营养状况进行了分析与评价, 提出了在石灰岩红黄壤上栽培猕猴桃特别应该增加氮肥与钾肥的施用量的观点. 此外还对氮磷钾3 种营养元素的施用量以及施用时间进行了讨论.

Measurement of Nutriments N, P, K and their seasonal changes in Kiwifruit, Actinidia deliciosa cv. Miliang-1

The measurement of the nutriments, nitrogen, phosphorus, potassium and their seasonal changes in kiwifruit, Actinidia deliciosa cv. Miliang-1, was carried in 1996 and 1997. The results showed that the average nitrogen content in root is higher than that in leaf and stem. But the phosphorus and potassium content in is higher than that in root and stem. The seasonal changes of these 3 nutriments content in plant, and relationship between nutriment content and soil nutriment supply are also discussed in this paper. Authors considered that the kiwifruit tested here was short of nitrogen and potassium supply, and phosphorus supply was sufficient on the whole.