邓恩桉引种及丰产栽培技术研究

Study on Techniques of Introduction and High-yielding Cultivation for Eucalyptus dunnii

对16个邓恩桉种源及其153个家系进行树高、胸径和材积生长性状调查,结果得出邓恩桉各家系间生长差异显著。选出的优良家系80个,其中材积生长量大于总体平均值20%的家系有22个。在合理密植、科学施肥等丰产栽培技术条件下,邓恩桉生长量超过直干蓝桉80%~140%,与史密斯桉生长量相近,但胸径生长往往超过史密斯桉,对培育大径材更有利,是一个值得广泛推广栽培的速生用材品种。

Tree height,DBH and volume growth traits of 16 Eucalyptus dunnii provenances and their 153 families were investigated.The results showed that the differences in growth of families were significant.80 superior families were selected,of which 22 families＇ volume growth were 20% higher than average.With high-yielding cultivation techniques including reasonable density and scientific fertilization,growth of Eucalyptus dunnii was 80%～140% more than that of E.globulus and close to that of E.smithii,but DBH increment of Eucalyptus dunnii was more than that of E.smithii,which was good for cultivating large diameter timber.Eucalyptus dunnii was worth popularizing widely.