| 摘要: |
| 在云浮市选取分布于云城区、云安区和郁南县的 153 个油茶（Camellia oleifera）适生林地样
点，研究油茶适生地区土壤养分含量变异性。研究结果显示，云浮市油茶适生区域土壤全氮、全磷和全
钾均为中等变异性；全氮养分处于中等偏低的状态，全磷为养分缺乏或极缺状态，全钾养分总体处于中
等状态；郁南县土壤全氮、全磷的含量最高，云安区的土壤全钾含量最高，郁南县最低，并且郁南县的
土壤全钾养分水平与云城、云安二区差异显著。根据研究结果可知，土壤养分管理要以提高磷素含量为
主，并适当施用有机肥，由于云浮市油茶适生区域土壤全氮、全磷和全钾 3 个养分指标的总体分布为散
点状，水平方向差异较大，部分区域间的土壤养分水平差异显著，因此还应考虑各个区域的土壤养分水
平的差异性，进行平衡施肥。 |
| 关键词: 土壤养分 变异性 油茶 云浮市 |
| DOI： |
| 分类号: |
| 基金项目:广东省省级科技计划项目“油茶专用肥及配套技术研究”（2015A020208001），广东省林业科技创新专项基金项目“森林土壤养分状况调查与评价”（2014KJCX022）。 |
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| The Variability Analysis of Forest Soil Nutrients in the Suitable Region for Camellia oleifera of Yunfu City |
|
chenlina,lixiaochuan and dingxiaogang
|
|
Guangdong Academy of Forestry,Guangdong Academy of Forestry,Guangdong Academy of Forestry
|
| Abstract: |
| 153 soil samples distributed in Yuncheng district, Yun''an district and Yunan county which were
selected in Yunfu city to study the variability of soil nutrient content in the areas suitable for Camellia oleifera
forest, and to guide the management of fertilization of C. oleifera in forestland. The results showed that soil total
N, total phosphorus and total potassium were moderate variability in the suitable areas for C. oleifera. The total
nitrogen was in the middle-low state, the total phosphorus was deficient or signiticant deficient, and the total
potassium was moderate in nutrition level. The highest content of total nitrogen and total phosphorus were both
in Yunan county. However, the highest content of total potassium was in Yun''an district while the lowest was in
Yunan county, and the difference of total potassium among Yunan county and Yuncheng-Yun''an district were
both signiticant. According to the results of research, soil nutrient management should be based on increasing the content of phosphorus and proper application of organic fertilizers. Because the difference among parts of
the research area, the total nutrients, such as total nitrogen, total phosphorus and total potassium levels were
significant, so call the balance of fertilization in various regions should also be considered in applying soil nutrient
management. |
| Key words: soil nutrients variability Camellia oleifera Yunfu city |
