神农箭竹开花前后植物体内N、P、K元素的动态

对神农箭竹(Fargesia murielae)N、P、K的含量进行分析,结果表明:N、P、K在竹子植物体内呈非均匀分布。N和P在各器官中的分布规律为:叶>鞭、根>竿;K在未开花竹和正开花竹中分布规律为:鞭>根>叶>竿,在已开花竹中分布规律为:叶>鞭>竿>根。随着开花过程的进行,N的含量在叶、竿、鞭和根等器官中逐渐减少;P的含量在竿、鞭和根等器官中逐渐降低,在叶片中先升高后降低;K的含量在鞭和根中呈下降趋势,在竿和叶中先降低后升高。

The Nutrition Dynamic of N,P,K in Umbrella Bamboo (Fargesia murielae) before and after Flowering

Based on analysis of the contents of N,P,K in Fargesia murielae,the results showed that the distribution of N,P,K varied significantly from periods to organs.The contents of N,P in different organs were ranked as follows:leaf>rhizome,root>culm.The potassium contents in descending order were rhizome,root,leaf,culm both in non-flowering bamboos and flowering bamboos,and were leaf,rhizome,culm,root in blossomed bamboos.In the process of flowering,the contents of nitrogen decreased;the contents of phosphorus reduced in organs such as culm,rhizome,root,and appeared a changing trend of ascend-descend in leaf;the contents of potassium reduced both in rhizome and root,and appeared a changing trend of descending first and then ascending both in culm and leaf.