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本研究以云烟87为材料,利用三种钾肥、通过三次喷施、形成不同的喷施量,探究不同类型钾肥在不同烟草生长期对钾素的吸收关系。结果表明,叶面喷施钾肥能够有效提升烟叶中钾肥的含量,且随着喷施次数和喷施量的增加,烟叶中钾含量能够显著提升。在第一次叶面喷施钾肥时,烟叶对钾肥的总利用率最高,随后在第二次和第三次喷施时,烟叶对钾肥的利用率逐渐下降。在几种钾肥类型中,硫酸钾的吸收效果好于磷酸氢二钾,但简单通过提高喷施量来持续提升烟叶的钾含量有一定的难度。
In this study, Yunyan87 was used as material, and three kinds of potash fertilizer were used to form different spraying rates through three sprays to explore the relationship between potassium absorption of different types of potash in different tobacco growing stages. The results showed that the foliar application of potash fertilizer could effectively increase the content of potash fertilizer in the leaves, and the potassium content in the leaves could be significantly increased with the spraying times and spraying amount. At the first foliar application of potash, the total utilization of potash was the highest, followed by a gradual decline in potash utilization over the second and third spraying. Among several potash types, the absorption of potassium sulfate is better than that of dipotassium hydrogen phosphate. However, it is difficult to increase the potassium content of tobacco leaves simply by increasing the spraying rate.