| 摘要: |
| 为掌握雷州半岛桉树 LH1 无性系林的土壤养分概况，探索不同整地方式对土壤养分的影响，
研究以全垦、开沟、挖穴 3 种整地方式造林，采用“5 穴综合法”进行土壤取样，分析评价了 LH1 无性
系林的土壤 pH 值、有机质、碱解 N、速效 P、有效 K 等 11 个养分指标，以及各指标与不同整地方式之
间的关系。结果表明，LH1 无性系碱解 N 较缺乏，土壤有机质，速效 P、有效 K 处于中等水平，交换性
Ca、Mg 含量皆低于临界值，微量元素 Zn 丰富，Cu、Mn 适中，B 较缺乏；不同整地方式对除土壤 pH 值
外的其它 10 种养分指标的影响显著（P<0.05），开沟方式土壤中有机质、主要营养元素 N、P、K，以及
中量元素 Ca、Mg 的含量，都要高于挖穴和全垦的整地方式，桉树经营上可以利用开沟的方式营林，以
增加土壤养分；整地方式对土壤中不同微量元素影响作用也很显著，并且在不同土层上表现不同。土壤
养分指标之间既有促进作用，也有拮抗作用，与整地方式紧密相关；生产上可以针对微量元素 B 缺乏的
现状，适量增加微量元素 Mn 或降低 Mg 来加以改善。 |
| 关键词: 土壤养分 LH1无性系 整地方式 相关性 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Study on Soil Nutrients of LHI, Eucalyputs urophylla × E.tereticornis Plantation in Jijia Forest Farm |
|
liaobin
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China Forestry Group Corporation
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| Abstract: |
| In order to master the soil nutrient condition of LH1, Eucalyputs urophylla×E.tereticornis clonal
platation in Leizhou Peninsula and explore the impact of different land preparation methods on soil nutrient content,
soil samples were collected by"five hole comprehensive method", and 11 nutrient indexes such as soil pH value,
organic matter, alkali hydrolyzed N, available P and effective K, etc, were analyzed and evaluated, as well as the
relations between the above indexes and the three preparation methods, namely, full cultivation, trenching and hole
digging, that set up for afforestation in the study.The results showed that in soil the content of alkali hydrolyzed N is
deficient, and the content of available P and effective K were in the middle level. The content of exchangeable Ca and
Mg was lower than the critical value, the trace elements Zn was rich, Cu and Mn were moderate, and B was deficient.
Different land preparation methods is significantly associated with all soil indexes except pH value (P <0.05). The
content of organic matter, main nutrient elements N, P, K, and medium elements Ca and Mg in soil of preparation
method trenching, are higher than the methods of digging holes and full cultivation. Eucalyptus management can use
the way of trenching to increase soil nutrients. The effect of land preparation on different microelements in the soil is
also significant, and the performance is different in different soil layers. Both promoting effect and antagonistic effect
exist between soil nutrient indexes, that are closely related to land preparation methods. In production, increasing Mn
or reducing Mg to improve the situation of lack of trace element B. |
| Key words: Soil nutrients LH1 clone Eucalyputs urophylla╳E.tereticornis land preparation method correlation |
