果树失绿症的识别与防治

• 作 者: 郝成路
• 机 构: 河北省柏乡县职教中心
• 出 处: 落叶果树
• 发表日期: 1997年03期
• 关键词: 失绿症 河北省沧州市 小叶病 中脉 叶片大小 严锋 失绿 缺铁 叶片 缺锌

果树失绿症的识别与防治答河北省沧州市读者严锋现从以下几个方面谈谈失绿症的判别，供你参考。（１）叶片的形状和大小：缺锌时叶片小而窄，在枝条顶端向上直立呈簇生状，亦即俗称的“小叶病”，缺少其它几种元素的失绿症叶片大小正常。（２）失绿的部位：缺铁时叶片中脉...

Fruit tree chlorosis identification and prevention answer: Cangzhou City, Hebei Province, readers Yan Feng now talk about the discrimination from the following aspects of chlorosis, for your information. (1) The shape and size of leaves: When zinc is deficient, the leaves are small and narrow, and the leaves are erect upright at the top of the branches. This is commonly known as “lobular disease”. The leaves with the lack of other elements are normal in size. (2) green parts: when the iron deficiency in the veins ...