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作 者:宋文静[1] 李永亮 王津军[3] 郭应成 孟霖 董建新[1] SONG Wenjing;LI Yongliang;WANG Jinjun;GUO Yingcheng;MENG Lin;DONG Jianxin(Tobacco Research Institute, CAAS, Qingdao 266101, China;Baoshan Branch of Yunnan Province Tobacco Company, Baoshan 678000, China;China Tobacco Corporation Yunnan Company, Kunming 650224, China)
机构地区:[1]中国农业科学院烟草研究所,青岛266101 [2]云南省烟草公司保山市公司,云南保山678000 [3]中国烟草总公司云南省公司,昆明650224
出 处:《中国烟草科学》2017年第5期77-81,共5页Chinese Tobacco Science
基 金:云南省烟草公司科技计划项目"保山烟区植烟土壤面源污染综合防治技术研究与应用"(2015YN23);中国农业科学院科技创新工程(ASTIP-TRIC03)
摘 要:采集测定了云南省保山烟区5个主要植烟县318个代表性烟田耕层土样的有机质含量和25个代表性烟田剖面发生层土样的有机质含量及其腐殖质组分碳量,分析了有机质的丰缺、剖面垂直分布特征以及与土壤pH和成土母质的关系。研究结果表明,保山市植烟土壤有机质含量平均值为37.39 g/kg,变幅为6.20~150.09 g/kg,变异系数为52.32%;第四纪红土和岩类风化坡积物母质的烟田土壤有机质含量显著高于岩类风化残积物母质的烟田土壤;不同成土母质的烟田土壤有机质含量和腐殖质组分的碳量总体上随着土壤深度的增加均呈逐渐降低的趋势;土壤有机质含量与pH呈显著的负相关关系(r=-0.238,p<0.05)。Plough-layer samples of318typical tobacco-growing fields and profile-horizon samples of25typical tobacco-growing fields were collected respectively from the5main tobacco-growing counties in Baoshan City of Yunnan Province in order to study the contents,spatial and profile distribution of organic matter,humus and its component carbon and their relationship with pH and soil parental materials.The results showed that the mean content of soil organic matter was37.39g/kg with a range from6.20to150.09g/kg,and the coefficient of variation was52.32%.The contents of soil organic matter in soil derived from the parental materials the Quaternary red clays and weathered slope washes were significantly higher than that derived from the weathered residuals.The contents of soil organic matter,humus and its component carbon in all profiles decreased with the increase of soil depth.The content of soil organic matter had a significant negative correlation with soil pH(r=?0.238,p<0.05).
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