河南农业大学学报2025，Vol.59Issue(4)：625-634,10.DOI:10.16445/j.cnki.1000-2340.20241031.003
不同海拔下生物炭对烟株根际土壤理化特性及其细菌群落结构的影响
Effects of biochar on rhizosphere physicochemical properties and bacterial community structure of tobacco plants at different altitudes
摘要
Abstract
[Objective]To study the effects of biochar on soil nutrient and bacterial community struc-ture in tobacco-growing soils at different altitudes.[Method]Four treatments were established under two altitude of 900 m and 1 200 m in Zunyi,Guizhou provinces,including conventional fertilization(HCK,LCK)and 0.9 t·hm-2 biochar treatment(HT,LT).Soil samples were collected to analyze the effects of biochar on soil nutrients and bacterial community structure in each treatment group.[Result]The results showed that the application of biochar increased soil organic matter mass fraction by 10.23%and 9.84%,the alkali-hydrolyzed nitrogen mass fraction by 19.83%and 12.19%,and the microbial biomass carbon mass fraction by 81.04%and 21.44%at the two altitude of 900 m and 1 200 m,respectively.Under different altitude,biochar application affected the bacterial community structure in the soil to different degrees.The relative abundance of Proteobacteria decreased signifi-cantly,while that of Verrucomicrobiota and Cyanobacteria increased significantly.At lower elevations up to 900 m,its relative abundance tends to decline.The relative abundance of Bacteroidota and Acti-nobacteriota at the level of the two phyla decreased at 1 200 m but increased at 900 m compared with CK.At the higher altitude of 1 200 m,the relative abundance of Acidobacteriota,Chloroflexi and Fir-micutes showed an increasing trend compared with CK.[Conclusion]Biochar can significantly improve the soil bacterial community structure,especially change the functional microbial community at 1 200 m altitude,and increase the soil microbial biomass carbon.This experiment provides a theoretical basis for the regulation and improvement of the microecological environment of tobacco-growing soil at different altitudes in the southwest tobacco-growing area.关键词
生物炭/海拔/植烟土壤/理化性质/细菌群落结构Key words
biochar/altitude/tobacco-growing soil/physical and chemical properties/bacteria com-munity structure分类
农业科技引用本文复制引用
王富磊,严锦申,王初亮,李茂森,黄纯杨,李宙文,高卫锴,任天宝..不同海拔下生物炭对烟株根际土壤理化特性及其细菌群落结构的影响[J].河南农业大学学报,2025,59(4):625-634,10.基金项目
国家重点研发计划项目(2021YFD1700900) （2021YFD1700900）
广东中烟科技攻关项目(2022440000340014) （2022440000340014）
