Abstract: This research studied the effects of slow release fertilizer dosage on the growth and nutrient content of Camellia oleifera container seedlings，aiming to determine the appropriate slow release fertilizer dosage for cultivating C.oleifera container seedlings.A randomized complete block design with a single factor was adopted in this experiment.Five treatments with different amounts of slow release fertilizer were set up，including 0 g per plant（CK），1.0 g per plant（T1），1.2 g per plant（T2），1.4 g per plant（T3），1.6 g per plant（T4）.The growth and N，P and K contents of C.oleifera container seedlings were measured.The comprehensive quality of C.oleifera container seedlings was evaluated by principal component analysis.The results showed that T3 treatment had the highest seedling height，basal diameter，root dry mass，stem dry mass，leaf dry mass，whole plant biomass，root length，root surface area and root volume，which were 66.55 cm，7.11 mm，10.49 g per plant，10. 37 g per plant，14.24 g per plant，35.10 g per plant，2 492.78 cm，584.92 cm2，40.96 cm³，and were increased by 23.24%，16.94%，83.71%，121.11%，85.90%，94.35%，23.21%，37.36%，129.47% compared with the CK，respectively. T3 treatment had the highest N，P and K contents in roots，stems and leaves，which were 125.03，12.59，73.74，90.40，12.75，41.95，172.40，15.81，88.60 mg per plant，and were increased by 62.80%，71.29%，59.85%，115.49%，175.38%，170.65%，133.45%，85.56%，129.12% compared with the CK，respectively.There were correlations among different nutrient contents，and between nutrient contents and growth indicators of C.oleifera container seedlings.The principal component analysis indicated that the comprehensive evaluation score of seedling quality was ranked as follows：T3>T4>T2>T1>CK. Overall，a suitable slow release fertilizer dosage could promote the growth and nutrient accumulation of C.oleifera container seedlings，with 1. 4 g per plant being appropriate.

Key words: Camellia oleifera, Slow release fertilizer, Container seedling, Seedling growth, Root development, Nutrient content

摘要： 研究缓释肥施用量对油茶容器苗生长和养分含量的影响，确定培育油茶容器苗合理的缓释肥用量。采用单因素随机区组设计，设置CK（0 g/株）、T1（1.0 g/株）、T2（1.2 g/株）、T3（1.4 g/株）、T4（1.6 g/株）5个缓释肥处理，测定油茶容器苗苗木生长和N、P、K含量，采用主成分分析评价油茶容器苗综合质量。结果表明，T3处理油茶容器苗苗高、地径、根生物量、茎生物量、叶生物量、整株生物量、根长、根表面积和根体积均最高，分别为66.55 cm、7.11 mm、10.49 g/株、10.37 g/株、14.24 g/株、35.10 g/株、2 492.78 cm、584.92 cm2、40.96 cm3，分别比CK处理增加23.24%、16.94%、83.71%、121.11%、85.90%、94.35%、23.21%、37.36%、129.47%。T3处理油茶容器苗根N、P、K含量，茎N、P、K含量，叶N、P、K含量均最高，分别为125.03、12.59、73.74、90.40、12.75、41.95、172.40、15.81、88.60 mg/株，分别比CK 处理增加62.80%、71.29%、59.85%、115.49%、175.38%、170.65%、133.45%、85.56%、129.12%。相关分析结果表明，油茶容器苗不同养分含量之间，养分含量和生长指标之间存在一定相关性。主成分分析结果表明，苗木质量综合得分排序为T3>T4>T2>T1>CK。综上，适量的缓释肥施用量能够促进油茶容器苗生长和养分积累，缓释肥施用量以1.4 g/株为宜。

关键词: 油茶, 缓释肥, 容器苗, 苗木生长, 根系发育, 养分含量