北方果树为何易缺铁

• 出 处: 山西果树
• 发表日期: 1997年02期
• 关键词: 缺铁 北方 碳酸铁 石灰性土壤 果树根系 碳酸钙含量 值过 氧化铁 果实着色 辅养枝

北方果树为何易缺铁北方果树，特别是苹果树，常易发生缺铁症状，分析其原因，主要有以下３条：（１）土壤ＰＨ值过高。北方土壤多为石灰性土壤，碳酸钙含量较高，土壤的ＰＨ值多在８以上，所以土壤中的铁多以碳酸铁、氢氧化铁、氧化铁等不溶状态存在，不能被果树根系所吸...

North why the north easy to iron fruit north iron fruit trees, especially apple trees, often prone to iron deficiency symptoms, analysis of its causes, mainly in the following three: (1) the soil PH value is too high. Northern soil mostly calcareous soil, calcium carbonate content is higher, the soil PH value more than 8, so the soil iron and iron carbonate, ferric hydroxide, iron oxide and other insoluble state, can not be absorbed by the roots of fruit trees ...