水分调控对烤烟生长、干物质积累和养分吸收的影响  

Effects of Soil Moisture Regulation on Growth and Dry Matter Accumulation and Nutrient Absorption of Flue-cured Tobacco

作　　者：周永波[1] 邵孝侯[1] 苏贤坤[2] 袁有波[2] 代丽丹[1] 王宇[1] 

机构地区：[1]河海大学农业工程学院,南京210098 [2]贵州省烟草科学研究所,贵阳550003

出　　处：《灌溉排水学报》2010年第1期56-59,共4页Journal of Irrigation and Drainage

基　　金：贵州省烟草公司科技计划项目(200705);国家烟草专卖局科技计划项目(010199902001)

摘　　要：采用防雨控水试验,研究不同生育期水分调控对烤烟形态、干物质积累和养分吸收的影响。结果表明,烤烟伸根期、旺长期、成熟期内土壤含水量下限分别保持在田间持水量的60%、80%、70%可以保证烤烟的正常生长,伸根期低于田间持水量的45%、旺长期低于田间持水量的65%将会对烤烟株高、茎围、叶面积的形成产生显著影响,旺长期适当增加水分供应更有利于烤烟产量的形成;水分调控对烤烟根部、叶片干物质积累影响作用显著;所有水分调控下均以钾的积累最多,氮次之,磷最少,成熟期水分调控下提高烤烟根部、茎部氮、磷、钾的含量作用显著,其他生育期没有明显规律。A rain-proof experiment was conducted to study the effects on form and dry matter accumulation and nutrient absorption of flue-cured tobacco by controlling the water at different growth periods. The results indicated that the soil moisture lower limit maintains separately in 600% ,80%,70 % may guarantee the normal growth of flue-cured tobacco during different growth periods, if the soil water content was lower than 45% in root spreading stage and lower than 65% in vigorous growing stage, the height, the stem surrounds and the leaf area would be influenced remarkably, it would be more advantageous to yield to increase the supply of water in vigorous growing stage; the moisture regulation influenced the dry matter accumulation of the root and the leaf remarkably; the concentration of K was the most, and then the N, the concentration of P was the least in all the moisture content regulations. The content of N,P and K at the root and the stem increased significantly in the maturing stage by moisture regulation, there are not obvious rules in other stages.

关 键 词：水分调控 农艺性状 干物质积累 养分吸收 生育时期 

分 类 号：S572[农业科学—烟草工业]