贵州龙里林场马尾松湿地松人工林土壤养分分布特征

发布时间：2018-02-28 06:18

本文关键词： 马尾松湿地松人工林土壤养分元素微量元素　出处：《中南林业科技大学学报》2017年09期 　论文类型：期刊论文

【摘要】：采用现场实测与实验室分析相结合的研究方法,对贵州龙里林场外来引进树种湿地松Pinus elliottii人工林及本地树种马尾松Pinus massoniana人工林不同土壤层理化性质及养分元素特征进行了研究。结果表明:2种林分土壤pH值为4.38~4.53,均表现为弱酸性;湿地松人工林有机质、全氮、磷、钾、钙含量均高于马尾松人工林;微量元素Fe、Cu、Zn、Mn、Co、Cr在2种林分中差异显著(P0.05);主成分分析法表明林分综合环境因子变量各指标受影响程度为NH_4-NZn速效PCoMnCuMgNP速效K。这些数据表明,马尾松人工林对各养分元素的利用效率均高于湿地松人工林,马尾松的生长对养分的渴求高于湿地松。
[Abstract]:The method of combining field measurement with laboratory analysis is adopted. The physical and chemical properties and nutrient element characteristics of different soil layers of Pinus elliottii plantation and Pinus massoniana plantation of Pinus massoniana were studied in Longli Forest Farm, Guizhou Province. The results showed that the soil pH value of the two stands was 4.38 ~ 4.53. All of them showed weak acidity. The contents of organic matter, total nitrogen, phosphorus, potassium and calcium in Pinus elliottii plantation were higher than those in Pinus massoniana plantation. The difference of trace element FeCuCuZMnMnCoC in the two stands was significant (P0.05A), and the principal component analysis showed that the influence degree of the comprehensive environmental variables of stand was NH_4-NZn available PCoMnCuMgNP available K.These data showed that there was no significant difference between the two stands. The utilization efficiency of nutrient elements in Pinus massoniana plantation was higher than that in Pinus elliottii plantation, and the nutrient craving of Pinus massoniana plantation was higher than that of Pinus elliottii plantation.
【作者单位】：中南林业科技大学;南方林业生态应用技术国家工程实验室;贵州省林业厅;
【基金】：国家林业公益性行业科研专项(201404316) 国家自然科学基金项目(31070410,30571487,30870455)
【分类号】：S714.8

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