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施肥对长白落叶松苗木养分库氮磷吸收及利用的影响
引用本文:康瑶瑶,刘勇,马履一,李国雷,祝燕,马跃. 施肥对长白落叶松苗木养分库氮磷吸收及利用的影响[J]. 北京林业大学学报, 2011, 33(2): 31-36
作者姓名:康瑶瑶  刘勇  马履一  李国雷  祝燕  马跃
作者单位:北京林业大学林学院,省部共建森林培育与保护教育部重点实验室
基金项目:"十一五"国家科技支撑计划项目,中央高校基本科研业务费专项资金项目
摘    要:为探讨传统施肥量是否使出圃长白落叶松苗木体内养分达剑养分奢养阶段,以长白落叶松1年生播种苗为实验材料,设定不同施肥量实验,对2年生移栽苗木的生物量、N和P的养分浓度及含量进行检验,并结合养分吸收利用效率和N、P的矢量情况进行分析.结果表明:2种施肥量处理对其养分库和全株的生物量(P<,养分库>=0.028 5;P<,全...

关 键 词:长白落叶松  养分承载  养分库    
收稿时间:1900-01-01

Effects of fertilization on uptake and availability of N and P nutrient pool of Larix olgensis seedlings
KANG Yao-yao,LIU Yong,MA Lü-yi,LI Guo-lei,ZHU Yan,MA Yue. Effects of fertilization on uptake and availability of N and P nutrient pool of Larix olgensis seedlings[J]. Journal of Beijing Forestry University, 2011, 33(2): 31-36
Authors:KANG Yao-yao  LIU Yong  MA Lü-yi  LI Guo-lei  ZHU Yan  MA Yue
Affiliation:College of Forestry, Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, 100083, P. R. China.
Abstract:In order to explore luxury nutrient uptake of the seedlings prior to field planting under conventional fertilizing regimes, Larix olgensis seedlings(one-year old) were selected as materials. Biomass, concentrations and contents of N and P of two-year old seedlings were tested under different fertilization treatments. The nutrient use efficiency and vector nomogram of N and P were also analyzed. The results show that the amount of fertilizer significantly affected the biomass(Ppool=0.028 5; Pintact=0.032 5), P concentration(Ppool=0.002 2; Pintact=0.041 8) and P content(Ppool=0.004 3; Pintact=0.030 1). Biomass and nitrogen transferring to nutrient pool occurred with low values of nutrient use efficiency. Vector analysis indicated that N deficiency and P in dilution status were observed in both nutrient pool and intact seedlings. In order to induce luxury nutrient uptake of seedlings, fertilization regimes should be optimized by conducting both exponential N nutrient loading during growth period and fertilization of P in late-season. Simultaneously, nutrient pool strength could be selected as an indicator for seedling performance after planting.
Keywords:Larix olgensis  nutrient loading  nutrient pool  N  P
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