| 李蕊萍1，许逸林1，朱 雯1，焦金凤 1，奚如春1，2.油茶生物量及养分分配研究[J].广东农业科学,2015,42(23):65-71 |
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油茶生物量及养分分配研究 |
| Biomass and nutrient distribution of Camellia oleifera |
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| DOI： |
| 中文关键词: ：生物量 营养元素 土壤养分 耦合关系 油茶 |
| 英文关键词: biomass element soil nutrient coupling relationship Camellia oleifera |
| 基金项目:：国家自然科学基金（31470026、30872052） |
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| 摘要点击次数: 1206 |
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| 中文摘要: |
| ：以平远县4 年生油茶和长岗山油茶幼苗为试材，对油茶林生物量及其养分分配规律、油茶林土
壤养分与树体各器官营养元素相关性进行了研究。结果表明：（1）4 年生油茶的平均生物量为2 331.93 g/株，
各器官平均生物量大小是根＞叶＞果＞茎＞枝，长岗山油茶幼苗各器官生物量大小是叶＞茎＞根＞枝；（ 2）
油茶各器官中，营养元素含量：N ＞ K ＞ P、Ca ＞ Mg、B ＞ Zn。叶片营养元素的空间分布为上层叶含N、P、
K、Mg 较多；（ 3）油茶各器官中，营养元素之间的相关系数有 31 对达显著或极显著水平；（ 4）油茶林下土
壤养分含量大小是：全K ＞全N ＞全P ＞交换性Ca ＞交换性Mg，有效Zn ＞有效B。土壤有机质、交换性
Ca、交换性 Mg、有效 Zn 和有效 B 的含量明显呈下坡＞中坡＞上坡的规律；（ 5）土壤养分与油茶各器官营养
元素具有不同程度的相关性，与油茶果的相关性最密切；土壤中的交换性Ca、交换性Mg 和有机质与油茶植
株中的营养元素关系最为密切；土壤交换性Ca 含量与油茶各器官Ca 元素含量均呈正相关，土壤全N、全P
含量与油茶各器官中N、P 元素含量呈两两正相关，土壤有效P、全K 含量与油茶各器官P、K 元素含量分别
呈负相关。 |
| 英文摘要: |
| Biomass and nutrient distribution of oil tree forest，and the correlation between its soil nutrients and
nutrient elements in different organs were studied by selecting four-year-old Camellia oleifera in Pingyuan county and
oil tea seedlings in Mountain Changgang as test materials. The results showed that the average biomass of C. oleifera
in Pingyuan county was 2 331.93 g per tree，and that of different organs was in the order of root ＞ leaf ＞ fruit ＞
stem ＞ branch，that in different organs of C. oleifera seedlings in Mountain Changgang was，however，in the order
of leaf ＞ stem ＞ root ＞ branch. C. oleifera’s nutrient content sorted by organs was in the order of N ＞ K ＞ P，
Ca ＞ Mg，and B ＞ Zn. Moreover，the upper leaves contained more N，P，K，Mg than the lower ones. There were
31 pairs of correlation coefficient among nutrients in different organs of C. oleifera，which reached significant or even
extremely significant level. The order of soil nutrient content of C. oleifera forest land was total K ＞ total N ＞ total P ＞
exchangeable Ca ＞ exchangeable Mg，effective Zn ＞ effective B. Content order of soil organic matter，exchangeable
Ca，exchangeable Mg，effective Zn and effective B was obviously downhill ＞ middle slope ＞ upper slope. There was
a various relation among nutrients in soil and those in different organs of C. oleifera：first of all，soil nutrients were most
closely associated with that of fruit，so was soil exchangeable Ca，exchangeable Mg and organic matter with the plant
nutrients；secondly，soil exchangeable Ca content and Ca content in different organs were all positively correlated；
last but not least，soil total N and total P content，N and
P content of each organ was positively related to each
other，while soil available P and total K content were
negatively correlated with P and K content of all organs，
respectively. |
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