| 摘要: |
| 对东莞樟木头林场广宁红花油茶林 Camellia semiserrata 用样地调查法开展土壤理化性质、植
物养分调查和测试分析。结果表明，土壤容重随土层加深变大，非毛管孔隙、通气性随土层加深变小。
土壤自然含水率为 18.5%，容重 1.441 g · cm-3，总孔隙度 39.76%。土壤 pH 值 4.42，有机质、全 N、碱解
N、有效 P、速效 K 值分别为 3 级、2 级、4 级、6 级和 4 级。土壤有机质含量较高，碱解 N、速效 K 肥
力不高，有效 P 极度缺乏。叶片有机 C 含量为 491.7 g · kg-1，全 N、全 P、全 K 平均含量分别为 15.61、
0.51、5.06 g · kg-1，叶片 C:N=31.5:1，C:P=964:1，N:P=30.6:1，叶片 P 含量极低，表明油茶人工林生长主
要受 P 的限制。 |
| 关键词: 广宁红花油茶 土壤 理化性质 养分 |
| DOI： |
| 投稿时间：2020-09-23修订日期：2020-11-03 |
| 基金项目:“广东省东莞广宁红花油茶低效林改造标准化示范区(2019-GDBS-01)”、科技基础资源调查专项“油茶种质资源调查收集(2019FY100801_01)”、广东省林业科技创新项目“广宁红花油茶优树选择及评价(2019KJCX042)” |
|
| Primary Research for Soil Physical and Chemical Properties，Leaves Nutrient of Camellia semiserrata |
| Guo Yexian,Liu Jun,Yang Shaowei,Rong Daojun,Liang Jinxi,Cai Fengling,ZHANG Yingzhong,WANG Minghuai |
| (Zhangmutou Forest Farm of Guangdong;Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou) |
| Abstract: |
| Soil physical and chemical properties and plant nutrients of Camellia semiserrata forest in
Zhangmutou forest farm of Dongguan were investigated and analyzed with sample-plot investigation method.
The results showed that soil bulk density increased with soil depth, and non-capillary porosity and aeration
decreased with soil depth. The natural moisture content of soil is 18.5%, the bulk density is 1.441 g · cm-3, and
the total porosity is 39.76%. The soil pH value is 4.42. The grade of organic matter, total N, alkali hydrolyzed N,
available P and available K are 3, 2, 4, 6 and 4, respectively. The content of soil organic matter is high, the fertility
of alkali hydrolyzed N and available K is low, and the available P is extremely deficient. The organic C content
in leaves is 491.7 g · kg-1, the average contents of total N, total P and total K were 15.61, 0.51 and 5.06 g · kg-1,
respectively. The leaf C:N= 31.5:1, C:P=964:1, N:P=30.6:1, and the leaf P content was extremely low, indicating
that the growth of C. semiserrata stand was mainly restricted by P. Therefore, in order to promote the healthygrowth of the stand and improve the seed setting ability, the C. semiserrata stand land needs appropriate tending
management to improve the soil physical properties, and balanced application of N, P, K fertilizers. |
| Key words: Camellia semiserrata soil physical and chemical properties nutrient |
