不同施肥方式对速生巨尾桉生长效果的影响.pdf

2022年1月 防护林科技 reelevelsrandom blocktestofascendingslope，middleslopeanddescendingslopeaccordingtonofertilization，
basal fertilization andsecondary fertilization. Results : Compared with no fertilization, the growth of Eucalyptus
grandis is the highest under secondary fertilization, which increase by 33. 33% , 62. 61% &0. 99% , respectively,
with significant differences. Under the condition of the same total fertilizer application rate, the growth amount of
Euca yptusgrandisisthehighestwhenthesecondaryfertilizerwasappliedonthedownhilslopeandthediference
was extremely significant. Compared with the control (P fertilizer) , Eucalyptus grandis (N-P-K： 20%-7%-8%)
showed the best growth in DBH and height,and the differences were extremely significant. Conclusion： When Eu­
ca lyptus grandis is applied in Guangdong province, secondary fertilization on downhill slope is more beneficial to in-
creasethegrowthofEuca yptusgrandis withoutincreasingthecost．
Key words Eucalyptus grandis ； fertilization method； slope position； economic benefit
o树（Eucalyptus spp.）原产于澳大利亚，属桃 空气净化能力及水土保持作用，能够改善环境，提高
金娘科， 1980年引到我国，广泛种植于我国南方地