广西植物Issue(2)：213-220,8.DOI:10.11931/guihaia.gxzw201404047
施肥对香樟幼苗生长及养分分配的影响
Effects of fertilization on Cinnamomum camphora seedlings growth and nutrient distribution
摘要
Abstract
Fertilization is an important way of seedling cultivation.Cinnamomum camphora is a native and rare broad-leaf species,and seedling cultivation of rare species plays an extremely important role in species protection,breeding, popularizing et al .Fertilization has an important impact on the growth and development of seedlings.This research try to reveal the influences of fertilization on seeding height,ground diameter,biomass and concentration content in different plant organs,through orthogonal design with three factors including N,P,K nutrients at three levels (N,P:0,3,6 g•pot-1 ;K:0,2,4 g•pot-1 )to conduct potted C .camphora seedings with exponential fertilization.The maln results were found as follows:(1)Fertilization could significantly promote the growth of seedlings,such as height and ground diameter.The effects of nitrogen was the most significant,followed by potassium fertilizer and phosphorus fertilizer;(2 ) Nitrogen could increase the nitrogen and phosphorus contents in the leaf,stem and root of seedlings.Phosphorus could increase phosphorus content in the leaf,stem and root of seedlings.Potassium could in-crease potassium content in the leaf,stem and root of seedlings;(3)The seedlings height showed a significant posi-tive relationship with nitrogen and phosphorus contents in the leaves (P <0.05).The ground diameter showed a sig-nificant positive relationship with nitrogen content in the stems (P <0.05).The biomass in leaves showed a signifi-cant positive relationship with nitrogen and phosphorus contents in the leaves (P <0.05).The biomass in stems showed a significant positive relationship with phosphorus content in the leaves (P <0.05);(4)For one-year-old C .camphora seedlings,the mixed fertilization of 6 g•pot-1 nitrogen,6 g•pot-1 phosphorus and 4 g•pot-1 potassium were beneficial to the seedlings height,ground diameter and biomass of branches and leaves.关键词
香樟/指数施肥/生物量/养分分布Key words
Cinnamomum camphora/exponential fertilization/biomass/nutrient distribution分类
农业科技引用本文复制引用
范川,舒翔,李晓清,李贤伟,黄复兴,李平..施肥对香樟幼苗生长及养分分配的影响[J].广西植物,2015,(2):213-220,8.基金项目
国家“十二五”科技支撑计划项目(2011BAC09B05) （2011BAC09B05）
中央林业公益性行业科研专项(201104109) （201104109）
