营林方式对桉树生长的影响

Effects of Forest Management on the Growth of Eucalyptus robusta

为考察不同营林方式对桉树生长情况产生的影响,对不同整地方式、坡位、穴处理、施肥方式、整地规格等因素对桉树生长的影响进行了分析。结果显示:以第4年生长情况为例,生长情况最好的为穴垦处理,树高分别较全垦和带垦高出0.75 m、0.26 m,胸径分别较全垦和带垦高1.02 cm、0.59 cm;下坡位的桉树生长情况最好,树高分别较中坡和上坡高出2.66 m、3.65 m,胸径分别较中坡和上坡高2.51 cm、3.76 cm;明穴回填表土的桉树生长情况最好,树高分别较暗穴和明穴不回填表土高出1.62 m、0.60 m,胸径分别较暗穴和明穴不回填表土高1.24 cm、0.67 cm;施肥的桉树树高较未施肥高出3.59 m,胸径较未施肥高3.51 cm;较大的整地规格有利桉树的生长,0.6规格整地的桉树树高较0.4规格高出0.96 m,胸径较0.4规格高1.47 cm。

In order to investigate the effects of different forest management methods on Eucalyptus robusta growth,the effects of different land preparation methods,slope location,hole treatment,fertilization methods and land preparation specifications on Eucalyptus robusta growth were analyzed.The results showed that taking the growth of the 4th year as an example,the best growth was the reclamation treatment.The growth of Eucalyptus robusta on the lower slope was the best.The growth of Eucalyptus robusta with backfilled topsoil in open hole was the best.The height and DBH of the fertilized Eucalyptus robusta were 3.59 m higher than that of the unfertilized Eucalyptus robusta,and 3.51 cm higher than that of the unfertilized Eucalyptus robusta.The larger size of the land preparation is favorable to the growth of Eucalyptus robusta.The height of the Eucalyptus robusta tree in the 0.6 size preparation is 0.96 m higher than that in the 0.4 size preparation,and the diameter at breast is 1.47 cm higher than that in the 0.4 size preparation.