橡胶树的缺钾与施钾

• 作 者: E·Pushparajah 叶大华
• 出 处: 热带作物译丛
• 发表日期: 1983年02期
• 关键词: 缺钾 施钾 含钾量 植胶区 冲积土 钾素 叶缘 叶龄 叶片边缘 胶园

一、钾素缺乏的出现直到最近,在西马来西亚,橡胶树普遍缺钾,尤其是由酸性花岗岩以及其他冲积土衍生的砂质内陆土更是如此。在其他许多植胶区,特别是含钾量少的土壤也经常发现这种情况。二、缺钾症状橡胶树的缺钾症状,开始是叶片边缘呈灰白色,并略为扩散,有时可变成灰白色的斑驳。以后叶缘变黄,斑驳相互连接

First, the emergence of potassium deficiency Until recently, rubber trees in the West Malaysia generally lack of potassium, especially sandy soils derived from acid granites and other alluvial soils. This is often found in many other areas of the plant, especially those with low levels of potassium. Second, symptoms of potassium deficiency symptoms of potassium deficiency of rubber trees, the beginning of the blade edge is gray white, and slightly diffused, and sometimes can become gray mottled. After the edge of yellowing, mottled interconnection