神农箭竹开花前后植物体内N、P、K元素的动态  

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

作　　者：詹爱军[1] 李兆华[1] 

机构地区：[1]湖北大学生命科学学院,武汉430062

出　　处：《武汉植物学研究》2007年第2期213-216,共4页Journal of Wuhan Botanical Research

基　　金：国家自然科学基金资助项目(30470284)

摘　　要：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。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.

关 键 词：神农箭竹 开花 营养元素 器官 

分 类 号：Q946.91[生物学—植物学] S795.2[农业科学—林木遗传育种]