张家界植烟土壤酸碱度分布及影响因素研究  

Study on Distribution and Influencing Factors of Soil pH in Zhangjiajie Tobacco Planting Area

作　　者：彭德元 袁谋志 付品山 王祖富 周游[3] 张圣炜 覃潇 荆永峰 宋浩 王振华 PENG Deyuan;YUAN Mouzhi;FU Pinshan;WANG Zufu;ZHOU You;ZHANG Shengwei;QIN Xiao;JING Yongfeng;SONG Hao;WANG Zhenhua(Hunan Tobacco Company,Zhangjiajie Branch,Zhangjiajie,Hunan 427000,China;Hunan Tobacco Industry Co.,Ltd.,Changsha,Hunan 410000,China;Hunan Agricultural University,Changsha,Hunan 410128,China)

机构地区：[1]湖南省烟草公司张家界市公司,张家界427000 [2]湖南中烟工业有限责任公司,长沙410000 [3]湖南农业大学,长沙410128

出　　处：《作物研究》2021年第6期581-584,共4页Crop Research

基　　金：湖南中烟工业有限公司科技项目(202143000934098)。

摘　　要：为探明张家界植烟土壤pH分布状况,在张家界烟区采集土壤样品468个,对土壤酸碱度分布状况及其影响因素进行分析。结果表明:张家界植烟土壤pH均值为5.91,pH处于适宜范围的仅为38.25%,pH小于5.5和大于7.0的植烟土壤分别占43.59%和18.17%。逐步回归分析表明,交换性钙、交换性镁、有效硫、有机质、碱解氮、粘粒含量和阳离子交换量、海拔是植烟土壤pH的主控因素,8项指标对植烟土壤pH的累计解释能力达77.7%,交换性钙、交换性镁含量和阳离子交换量为主要控酸因子,有效硫和碱解氮为土壤主要致酸因子。因此,张家界酸性植烟土壤可适当增加含钙和含镁物料的投入,减少含硫物料的投入。In order to find out the distribution of pH in tobacco growing soil in Zhangjiajie,468 soil samples were collected in Zhangjiajie tobacco growing area,and the distribution of soil acidity and alkalinity and its influencing factors were analyzed.The results showed that the average pH value of Zhangjiajie tobacco planting soil was 5.91,and only 38.25% of which was in the suitable range,and 43.59% and 18.17% of which were less than 5.5 and more than 7.0,respectively.The stepwise regression analysis showed that the content of exchangeable calcium,exchangeable magnesium,available sulfur,organic matter,clay(<0.002 mm),cation exchange capacity,altitude and alkali hydrolyzed nitrogen were the main factors controlling the pH of tobacco planting soil.The cumulative explanatory power of the eight indexes to the pH of tobacco planting soil was 77.7%,and exchangeable calcium,exchangeable magnesium and cation exchange capacity were the main acid controlling factors.Available sulfur and available nitrogen were the main acidogenic factors.Therefore,it is suggested that the input of materials containing calcium and magnesium should be increased,and the input of sulfur-containing materials should be reduced.

关 键 词：植烟土壤 PH 回归分析 张家界 

分 类 号：S572.06[农业科学—烟草工业]