摘要
对海南省儋州市橡胶园土壤腐殖质组成与土壤酸度含量进行研究,结果表明,该植胶区橡胶林0～40cm土壤腐殖质组成含碳量大小依次为富里酸、胡敏素、胡敏酸;土壤活性酸度范围在4.32～5.56之间,土壤属于酸性和强酸性,且不同母岩和地形对土壤潜性酸度影响不同.在简单相关分析中富里酸与土壤水解酸度呈极显著正相关关系（r=0.58）,而土壤胡敏酸与pH显著正相关（r=0.41）、与水解酸度显著负相关（r=-0.39）、与交换性酸度显著负相关（r=-0.48）.运用典型相关分析研究腐殖质组成和土壤酸度之间的关系,发现土壤腐殖酸是水解酸度的主要影响因素,而胡敏酸和胡敏素与土壤交换性酸度关系密切.
Canonical correlation analysis was applied to study the relation between soil humus composition and soil acidity in rubber plantations of the west of Danzhou, Hainan province. The results showed that soil humus composition was dominated by fulvic acid, followed by humin and humic acid, in 0-40 cm soil layer. The pH value of the rubber plantation soil was 4.32-5.56, indicating that the soil was acidic or strongly acidic, and different rocks and terrain had different effects on soil potential acidity. The results of simple correlation analysis showed that soil fulvie acid had extremely significantly positive correlation （r=0.58） with hydrolytic acidity, soil humin acid had significantly positive correlation with pH （r=0.41）, significantly negative correlation with hydrolytic acidity （r=-0.39） and exchangeable acidity （r=-0.48）. Canonical correlation analysis showed that humic acid was the main influence factor of hydrolytic acidity, and soil exchangeable acidity was closely related to humic acid and hnmin.
出处
《广东农业科学》
CAS
2015年第9期40-44,共5页
Guangdong Agricultural Sciences
基金
海南省自然科学基金(411105)
中国热带农业科学院橡胶研究所基本科研项目(1630022013006)
关键词
橡胶园土壤
土壤酸度
腐殖质组成
典型相关分析
rubber plantation soil
soil acidity
humus composition
canonical correlation analysis
