中国烟草学报Issue(3)：13-21,9.DOI:10.3969/j.issn.1004-5708.2014.03.011
烟草青枯病发病烟株根际土壤营养状况分析
Nutritional status ofrhizosphere soil around bacterial wilt diseased tobacco plant
摘要
Abstract
177 soil samples were collected and analyzed in order to study the relationship between nutritional status of tobacco rhizosphere soil and bacterial wilt,. Results showed that lower levels of soil pH, organic matter, rapidly available potassium, convertible calcium, available boron and molybdenum, and higher levels of convertible magnesium and available manganese could weaken soil resistance to disease, resulting in serious bacterial wilt. The Ca/Mg value (4.04) of rhizosphere soil around tobacco plant with bacterial wilt disease was significantly lower than that of healthy ones (9.86). Factor analysis showed that lower levels of available molybdenum and exchangeable calcium in tobacco-growing soil were the overriding factors for bacterial wilt epidemic. Discriminant analysis showed that rapidly available potassium, convertible calcium, active molybdenum, organic matter and available boron in tobacco rhizosphere soil might be key factors to cause tobacco bacterial wilt.关键词
烟草/青枯病/土壤养分/矿质营养/根际调控/连作障碍Key words
tobacco/bacterial wilt (Ralstonia solanacearum)/soil nutrition/mineral nutrition/rhizosphere manipulation/continuous cropping obstacles分类
农业科技引用本文复制引用
郑世燕,陈弟军,丁伟,杜根平,刘永琴,程小龙,刘宪臣,徐小洪,王溶..烟草青枯病发病烟株根际土壤营养状况分析[J].中国烟草学报,2014,(3):13-21,9.基金项目
中国烟草总公司重点项目（110201202002）；中国烟草总公司重庆市公司重点项目（NY 20130501070005）；湖南中烟工业有限责任公司科技项目 （）
