贵州开阳烟区烤烟需水特征与烟田土壤水分变化研究  

Flue-Cured Tobacco Water Requirement Characteristics and Soil Moisture Change in Kaiyang Tobacco Area

作　　者：冷璐[1] 陆引罡[1] 

机构地区：[1]贵州大学农学院,贵州贵阳550025

出　　处：《湖南农业科学（下半月）》2014年第7期7-11,共5页

基　　金：国家科技支撑计划资助项目(2012BAD40B03-4)

摘　　要：烤烟需水特征与烟田土壤水分变化状况对烤烟生长发育、生理生化过程、烟叶的品质特征和产量都有显著的影响。通过田间试验,研究优质烤烟需水特征和各生育期土壤水分的动态变化,结果表明,烤烟生长季内需水量具有明显的阶段性:伸根期消耗少,旺长期明显升高,成熟期逐步下降,烤烟需水特征与烟株的生长趋势相一致。烤烟伸根期、成熟期土壤含水量大于烤烟的需水量,需要注意排水,而旺长后期和成熟前期由于阶段性干旱,土壤含水量小于烤烟的需水量,这一时段应及时进行补灌。Flue-cured tobacco water requirement characteristics and soil moisture condition have very significant effect on tobacco growth, physiological and biochemical process, the quality of tobacco and fertilizer use in tobacco fields. T his research through the field trials providedtechnicalsupportforthetobaccoplantingandwaterusingproject.Theresultsshowedthatithasobviousstagesondomesticdemand of water：it’s less consumption in root stretch period, significantly higher in vigorous growing period, gradually declined in mature period, flue-curedtobaccowaterrequirementcharacteristicsconsistentwiththegrowthtrendoftobacco.Thesoilmoisturecontentisgreaterthanthe tobaccowaterrequirementinrootstretchandleafmatureperiod,thusneedtopayattentiontodrainage;thesoilmoisturecontentlessthanthe waterrequirementsin vigorousgrowing period due to periodic drought,thistime should be timely to supplementalirrigation.

关 键 词：需水特征 烤烟 土壤水分 

分 类 号：S572.012[农业科学—烟草工业]