植物营养与肥料学报2011，Vol.17Issue(4)：989-995,7.
土壤水分对烤烟生长、物质分配和养分吸收的影响
Effects of soil moisture content on growth,biomass partition and nutrient uptake of tobacco
摘要
Abstract
Effects of different soil moisture contents on the nutrient uptake and growth of flue-cured tobacco were studied under the pot cultivation.The results show that with the increase of soil moisture content,the height and biomass of tobacco are increased,and the amplitude increments are leafstemroot,while the root to shoot ratios are inversely proportional to the moisture content,which reflects the characteristics of the responses of tobacco growing to various soil moisture contents.Chlorophyll has different responses to soil moisture content in different growing periods,and the most optimum soil moisture content for Chlorophyll at different growing periods are 70%-75%,80%-85% and 50%-55%,respectively.The uptakes of nitrogen（N） and potassium（K） are all significantly greater than that of phosphorus（P） in the five treatments,with the decrease of soil moisture content,the nutrient uptakes of roots and stems are increased in varying degrees when the moisture content is less than the optimum level that required by tobacco,while the uptakes of leaves are declined.While in the case of excessive soil moisture content,the nutrients uptakes（N,P,K） of roots,stems and leaves are significantly reduced in each period.关键词
土壤水分含量/烤烟/生物量/养分吸收Key words
soil moisture content/tobacco/biomass/nutrient uptake分类
农业科技引用本文复制引用
余泺,高明,王子芳,徐畅,谢会川,李常军..土壤水分对烤烟生长、物质分配和养分吸收的影响[J].植物营养与肥料学报,2011,17(4):989-995,7.基金项目
重庆市烟叶公司项目 （）
国家科技支撑计划（2008BABA7B092007BAD87B10）资助 （）
