论文部分内容阅读
本文研究了皖南4种植烟土壤钾肥与烟叶含钾量的关系。中钾和高钾处理区的烟株长势明显优于无钾处理区。烟株缺钾症状与土壤速效钾含量密切相关。相同施钾水平,轻质土壤的烟叶含钾量高于质地粘重的土壤。施钾肥后,烟叶含钾量增加的幅度与土壤速效钾含量呈相反的趋势。相同叶位,烟叶含钾量与烟叶钙镁含量呈显著的负相关。
The paper studied the relationship between potash fertilizer and potassium content in four tobacco growing areas in South Anhui. The growth of tobacco plants in middle and high K treatment areas was obviously better than that of non-K treatment. The symptoms of potassium deficiency in tobacco plants are closely related to the content of available potassium in soil. The same potassium level, light soil, tobacco leaf potassium content is higher than the sticky soil texture. After applying K fertilizer, the increase of K content in tobacco leaf showed the opposite trend with the available K content in soil. At the same leaf position, the content of potassium in tobacco leaf had a significant negative correlation with the content of calcium and magnesium in tobacco leaves.