摘要
通过同田试验,研究喷施不同浓度硫酸钾对烤烟生长和品质的影响。结果表明:在云南文山丘北特定的土壤生态条件下,叶面喷施2%浓度硫酸钾,烟叶质量较为理想。叶面喷施2%浓度硫酸钾,成熟期提前2～3 d;打顶后株高比对照增加3.5cm,叶片数比对照增加1.3片,促进上部叶片发育;减少病害发生;促进烟叶分层落黄,改善落黄均匀度和叶片厚度;提高产量,产量比对照增加168 kg·hm-2;有利于改善烤烟油分和色度;并使烟叶化学成分更加协调,提高烟叶香气,减少杂气,提高烟叶可用性。
Field tests were conducted to research the influence of spraying different concentrations potassium sulfate on foliage on tobacco growth and quality. The results showed that under the specific soil ecological conditions of northern hills in Wenshan, Yunnan Province, the quality of tobacco leaves would be the best when potassium sulfate of 2% concentrations was applied. By spraying such potassium sulfate the maturity period would be brought forward for 2-3 d, tobacco would be 3.5 em higher than the control after topping, the number of tobacco leaves would increase by 1.3 pieces, and the expanding of upper leaves would be accelerated; the occurrence of plant diseases would be reduced as well; not only the layered yellowing of tobacco would be promoted, but also the yellowing evenness and tobacco leaf thickness be improved; not only the yield would be increased, which would be increased by 168 kg· hm^-2 than the control, but also oil content and color of tobacco be improved; chemical component of tobacco would be more balanced as well so as to reduce superfluous aroma and increase tobacco aroma and also the usability of tobacco leaves.
出处
《天津农业科学》
CAS
2014年第7期69-73,共5页
Tianjin Agricultural Sciences
关键词
烤烟
硫酸钾
喷施
生长
品质
tobacco
potassium sulfate
spray
growth
quality
