摘要
采用防雨控水试验,研究了烤烟生长发育及化学品质对水分胁迫的响应。结果表明,在烤烟生长发育的各个阶段,随土壤相对含水量升高,烟株的株高和叶面积明显增大。土壤干旱或水分过多,烤烟根系体积、根系表面积、根系活力下降;烤烟团棵期、旺长期和现蕾期、成熟期最适宜的土壤相对含水量分别为65%,80%,80%,65%。烤烟成熟期,不同水分处理中部叶和上部叶蛋白质、烟碱、总氮的含量增加;总糖、还原糖的含量降低,而且土壤干旱时要比水分过多时下降的多,这使得烟叶的品质降低;糖碱比、氮碱比、施木克值以轻度干旱(65%处理)处理较合理。
Rainproof and water controlling experiments is conducted to research on response of flue-cured tobacco growth and chemical quality to water stress. The result indicated that, during each stage of flue-cured tobacco growth, the height and leaf area of tobacco increases obviously along with the elevation of the soil relative water content. The soil is dry or the water is exees-sive, the root system volume, the root system surface area and the root system vigor will all drop. The most suitable relative water of soil for the resettling stage, vigorous growing stage, budding stage and mature stage is 65 %, 80 %, 80 %, 65 %, respectively. In the mature period of flue-cured tobacco, protein in the middle and the upside leaf, the smoke alkali and the total nitrogen increases along with the increasing of water processing treatment, whereas the total sugar and the reducing sugar will reduce. Moreover,when the soil is drought,it reduces much more than that the water is excessive,which causes the quality of tobacco leaf to reduce; The sugar alkali, NIT/NIC and SUR/NIT of flue-cured tobacco is more reasonable when it is processed by mild drought （65 % processed）.
出处
《河南农业科学》
CSCD
北大核心
2008年第11期55-58,共4页
Journal of Henan Agricultural Sciences
基金
贵州大学人才基金(X060034)资助
关键词
烤烟
水分胁迫
生长发育
化学品质
Flue-cured tobacco
Water stress Growth and development
Chemical qualities
