| 摘要: |
| 以无机肥、有机肥以及两者的混合肥为基肥探讨肥料种类及配比对肯氏南洋杉人工林早期生长的影响。研究结果表明，不同处理间树高、胸径和材积生长差异显著，施基肥能显著提高植株生长量，单施NPK无机肥和有机肥时，生长指标均随施肥量增加而显著增加，等量有机肥加入P肥后，效果比单施有机肥好，但P肥用量过高会有一定的抑制作用。综合分析结果表明，施450 g NPK无机肥（F3）时效果最佳，施1 kg有机肥配合200 g P肥（F5）的效果次之，4.5 a生时其树高和胸径分别比对照（CK）高63.16%和58.55%、77.27%和68.18%，材积分别高411.2%和348.00%。 |
| 关键词: 肯氏南洋杉，施肥，早期生长 |
| DOI： |
| 分类号: |
| 基金项目:国家“948”农业引进项目“南洋杉科优良树种树种引种栽培”(99-4-01) |
|
| Effects of Different Fertilizers on Early Growth of Araucaria cunninghamii |
|
liang chen-li
|
| Abstract: |
| The authors tested the effects of inorganic fertilizer, organic fertilizer (OCF) as well as inorganic and organic compound fertilizer on the early growth of 4.5 years old Araucaria cunninghamii plantation at state owned Zhenhai Forest Farm of Kaiping City. The results demonstrated significant differences in height, DBH and volume among the tested eight different fertilization treatments (P<0.01). Fertilization significantly increased the growth volume of the plantation. When treating with NPK inorganic and organic fertilizers only, growth traits were enhanced as the dosage of fertilization increased. Similar amount of organic fertilization became more effective with added P. However, over dosage of P could suppress growth. Overall analysis showed that the optimal fertilization combination was 450 g NPK organic fertilizer (F3), whereas the combination of 1 kg OCF plus 200 g P (F5)was not as efficient. At 4.5 years old, the height and DBH of F3 and F5 were 63.16% and 58.55% higher than CK, respectively, and the volumes improved by 411.20% and 348.00%, respectively. |
| Key words: Araucaria cunninghamii, fertilizer, early growth |
