摘要
试验在盆栽条件下进行 ,研究表明 ,硒和硫对烟草的生长发育和烟叶品质诸方面存在着相互作用。硒、硫对烟草生长的影响则随硒、硫处理浓度、土壤类型及烟草生育不同而变化 ,红壤上低硒(<4.94～ 6.1 8μg Se/g)促进了前期烟草生长 ,高硫 (1 50 μg S/g)处理加强了低硒对烟草生长促进作用。黄褐土上施硒抑制烟草的前期生长 ,在低硒 (<6.1 8μg Se/g)处理下 ,施硫减弱了硒对烟草的抑制作用 ,硒、硫表现出明显的颉颃作用。硒、硫处理对成熟烟草生物量的影响与前期烟草不同。高硫的加入可以减轻红壤高硒对成熟烟草生物量的抑制作用。烟叶主要化学成分烟碱、总糖、蛋白质及钾含量不仅取决于硒浓度 ,而且取决于施硫量 ,适量的硒、硫 (6.1 8μg Se/g和 75μg S/g)配合处理可以使烟叶具有较高的总糖。
Pot experiments were carried out for flue cured tobacco (Nicotiana tabatum L ) Results showed that there were effects of selenium and sulfur interaction on tobacco growth and leaf quality The effect on tobacco growth varied with soil type, growth stage, and Se, S rate Growth of earlier stage tabacco in red earth increased with the increase of Se at lower rates(<4 94～6 18mg Se/kg) High rate of S(150 mg S/kg) enhanced biomass at lower rate of Se Application of Se decreased the growth of earlier stage tobacco in cinnamon soil and the decrease was depressed by S addition, indicating the antagonistic relation between Se and S However,the effect was different in the case of matured tobacco Biomass of matured bobacco was depressed by high rate S Contents of main chemical components (total sugar, protein, nicotine, and potssium)in tobacco leaves were influenced by both Se and S Application of moderate rate of SeO 3 2 and SO 4 2- (4 94 mg Se/kg with 75 mg S/kg) increased the contents of total sugar,nicotine and Se in tobacco leaves and decreased leaf protein content
出处
《安徽农业大学学报》
CAS
CSCD
2000年第4期313-320,共8页
Journal of Anhui Agricultural University
关键词
硒
硫
烟草
生长发育
烟叶品质
selenium
sulfate
interaction
soil
flue cured tobacco
