桉树人工林培育需肥量研究

Study on the Fertilizer Requirements of Eucalyptus Plantation

为深入研究不同经营目标下桉树人工林养分需求与施肥特点,本研究利用收集整理的桉树文献数据,依照相关的模型,分析计算桉树人工林培育的施肥量。结果表明:桉树纸浆材NPK养分需求总量为257.2~803.92 kg·hm^-2、桉树胶合板材NPK养分需求总量为1055.15~2836.08 kg·hm^-2、桉树实木用材NPK养分需求总量不低于3298.09 kg·hm^-2;考虑到目前桉树人工林施肥过程中较低的肥料利用率,桉树纸浆材施用专业复合肥总量为4.99~15.61 t·hm-2;桉树胶合板材施用专业复合肥总量为20.49~50.06 t·hm^-2,桉树实木用材施用专业复合肥总量为要超过60.03 t·hm^-2。

In order to further study the nutrient requirements and fertilization characteristics of Eucalyptus plantations under different management objectives,the fertilization quantities for plantations was analyzed and calculated according to relevant models using data collected from published Eucalyptus literature.The results showed that the total NPK nutrient requirements of Eucalyptus pulpwood plantation was 257~804 kg·hm^-2,that of Eucalyptus plywood plantations was 1055~2836 kg·hm^-2,and that of Eucalyptus solid wood was no less than 3298 kg·hm^-2.Considering the low fertilizer utilization rate of Eucalyptus Plantation at present,the total amount of professional compound fertilizer applied to Eucalyptus pulpwood is 4.99~15.61 t·hm^-2.The total amount of professional compound fertilizer applied to Eucalyptus plywood is 20.49~50.06 t·hm^-2.And the total amount of professional compound fertilizer applied to Eucalyptus solid wood is more than 60.03 t·hm^-2.