泡桐幼龄林配方施肥的初步研究  

Study on the fertilization effect of young Paulownia forest

作　　者：卢漫[1] 吴立潮[1] 吴建平[2] 吴天乐[2] 赵建平[1] 

机构地区：[1]中南林业科技大学林学院,湖南长沙410004 [2]湖南省林业科学院,湖南长沙410004

出　　处：《中南林业科技大学学报》2010年第6期55-59,共5页Journal of Central South University of Forestry & Technology

基　　金：国家"十一五"科技支撑计划"泡桐大径材速生丰产林养分定量控制关键技术研究与示范"(2006BAD24B05-03)

摘　　要：在测定土壤平衡解析磷和土壤钾位缓冲容量的基础上,根据林木施肥立地养分效应模型法,结合泡桐林的目标产量,提出了中等立地条件下白花泡桐幼龄林的施肥量,并进行了田间肥效校验试验研究。肥效校验试验共设计6个处理,即Ⅰ(N1P1K1)、Ⅱ(N2P2K2)、Ⅲ(N3P3K3)、Ⅳ(N4P4K4)、Ⅴ(N5P5K5)、Ⅵ(CK),3次重复。研究结果表明:不同施肥处理对泡桐幼龄林的胸径和树高增长均有显著性影响,区组间无显著差异。LSD多重比较检验后得出,施肥第一年后,处理Ⅲ对白花泡桐幼龄林的胸径增长效果最显著,但对树高增长的影响没有达到显著水平。施肥第二年后,处理Ⅳ对胸径增长效果最显著。而从树高的增长来看,处理Ⅱ的增长效果最佳。综合考虑,泡桐幼林生长最佳的N、P、K施肥量及最佳配比为Ⅲ(N3P3K3)。Based on the determination of soil balance analysis phosphorus,soil potassium buffer capacity,the site nutrition effect model and target biomass,the amount of fertilization was proposed and a field calibration study was conducted about young Paulownia Fortunei forest in the moderate site condition.Fertilizer calibration tests designed six treatments： Ⅰ（N1P1K1）,Ⅱ（N2P2K2）,Ⅲ（N3P3K3）,Ⅳ（N4P4K4）,Ⅴ（N5P5K5）,Ⅵ（CK）,three times to repeat.The results showed that all of fertilization treatments had significantly influence on growth of young P.Fortunei forest,but difference among groups was not obvious.The results of LSD multiple comparison test show that in the first year,the effect of the fertilization treatment Ⅲ（N3P3K3） was the best treatment to the DBH of young Paulownia forest,but there wasn＇t notable influence to the height,and in the second year,the effect of the fertilization treatment Ⅳ（N4P4K4） was the most significant increment to the DBH of young P.Fortunei forest,while Ⅱ（N2P2K2） was the best to the height.By comprehensive consideration,the fertilization treatment Ⅲ（N3P3K3） was the best fertilizer proportion to young P.Fortunei forest.

关 键 词：施肥 立地养分效应模型 目标产量 白花泡桐 幼龄林 

分 类 号：S792.43[农业科学—林木遗传育种]