基质施肥对高阿丁枫留床苗生长的影响

采用单因素设计进行基质施肥对高阿丁枫苗木生长的影响试验。结果表明:①施肥极显著地影响苗木密度、地径、苗高和侧枝萌发;②苗木密度随施肥量的增加呈递减趋势;③施肥量为0.0～3.0 kg/m2时,地径随施肥量的增加而增大,施肥量>3.0 kg/m2时,各处理间的地径无显著性差异;④0.0～7.0 kg/m2施肥范围内苗高随着施肥量的增大而增长,施肥量大于8.0 kg/m2时抑制苗高生长;⑤施肥量0.0～7.0 kg/m2时,侧枝数与施肥量正相关,施肥量>7.0 kg/m2时,侧枝发育受到抑制;⑥除密度与侧枝数间未达到显著相关外,其余指标两两间相关极显著,其中密度与苗高、地径呈负相关,而地径、苗高与侧枝数之间呈正相关。

Effect of Organic Fertilization on Growth of Seedlings Bed of Altingia excelsa

Effect experiment of organic fertilization on growth of the seedling of Altingia excelsa was con-ducted by using single-factor design. The results showed that ： （1） Fertilization significantly affected the seedling density, Basal diameter, Height and lateral branch. （2） With increasing of fertilizer, seedling density was trend to decrease. （3） The rate of fertilizer between O. 0 and 3.0 kg/m^2 , the Basal diame-ter increased with the fertilizer increasing; when it more than 3.0 kg/m^2, Basal diameter of all treat-ments were not significant difference. （4） When fertilizer rate was 0.0 - 7.0 kg/m^2, Height increased with increasing of the fertilizer; the Height growth was inhibited when it exceeded 8.0 kg/m^2. （5） There was a positive correlation between the lateral branches and fertilizer when the fertilizer rate was 0.0 - 7.0 kg/m^2 , when it exceeded 7.0 kg/m^2 , the growth of lateral branches were inhibited. （6） There was a significant correlation for every two parameters except the density and lateral branches, and it was negative correlation between density and Height as well as Basal diameter, however, between Basal diam-eter and Height as well as lateral branch, there was a positive correlation.