中国农学通报2025，Vol.41Issue(35)：55-62,8.
垄作烟田土壤呼吸特征研究
Study on Soil Respiration Characteristics of Tobacco Fields with Ridge Tillage
摘要
Abstract
In response to global climate warming,reducing anthropogenic greenhouse gas emissions and achieving"carbon neutrality"has become a research hotspot.The main purpose of this study is to identify the characteristics of soil respiration fluxes and their main influencing factors in traditional ridged tobacco cultivation in Yuxi,providing valuable data for enhancing carbon sequestration and reducing emissions in tobacco fields.We measured soil respiration in conventional planting patterns in the core tobacco growing area of Chengjiang City,Yuxi,Yunnan Province,using a static chamber gas chromatography technique.The study investigated the dynamics of soil respiration flux and its relationship with soil environmental and nutrient factors.The results showed that,under the conventional ridge-planting system,soil temperature at 5 cm depth on the ridge was significantly higher(P<0.01)than in the furrow,while there was no difference in temperature between the furrow and ridge soil at 10 cm,and the moisture content of soil on the ridge from 0 to 10 cm was significantly higher(P<0.01)than that in the furrow;MBC,NH4+-N,and NO3--N in the soil on the ridge were significantly(P<0.01)higher than those in the furrow;the total soil respiration during the tobacco growth period was 1.45 t C/hm2,with total soil respiration on ridge and in furrow being 1.60 t C/hm2 and 1.30 t C/hm2,respectively,with significant differences(P<0.01).The soil respiration flux under the conventional ridge planting mode of Yuxi tobacco exhibited net emissions,mainly influenced by soil MBC,DOC,temperature at 10 cm depth,and soil moisture content from 0 to 10 cm layer.The ridge-planting method caused significant differences in soil environmental and nutrient factors,as well as soil respiration flux,between the ridge and furrow areas.Therefore,when observing soil respiration characteristics in ridge-planting tobacco fields,it is essential to distinguish the difference between the ridge and furrow areas to obtain more accurate results,providing scientific support for achieving the"dual carbon"goals in tobacco fields.关键词
土壤呼吸/垄作/土壤温度/土壤湿度/烟田Key words
soil respiration/ridge tillage/soil temperature/soil moisture/tobacco field分类
农业科技引用本文复制引用
刘运通,杨海林,周津弘,李涛,张娜,高进波,刘宪斌,杨利云..垄作烟田土壤呼吸特征研究[J].中国农学通报,2025,41(35):55-62,8.基金项目
中国烟草总公司云南省公司科技计划项目"'双碳'背景下玉溪烟田碳排放变化规律与影响因素研究"(yxyc2023031) （yxyc2023031）
云南省科技厅人才项目"云南省中青年学术和技术带头人后备人才"(202305AC160090) （202305AC160090）
国家自然科学基金项目"云南热带雨林与稀树灌草丛生态系统土壤呼吸对干旱对立响应的机制研究"(41975147) （41975147）
云南省地方本科高校基础研究联合专项面上项目"茉莉酸信号对玉米幼苗耐热性的影响及其作用的生理及分子机制"(202101BA070001-065). （202101BA070001-065）
