铁是植物生长发育必需的元素,是叶绿素形成不可缺少的条件。在我国北方地区的石灰性土壤中,铁的含量较为丰富,但由于土壤偏碱,pH值偏高,铁的活性受到了限制,使可溶性的有效铁含量大大降低。这对一些喜酸性土壤的花卉(如杜鹃、山茶、苿莉、枙子、苏铁、米兰、含笑、榕树等)来讲,远远不能满足它们对铁的需要,从而影响植株正常的生长发育。另外,一些不正确的施铁肥方法也会使铁失去活性,不能发挥其应有的效用。因此,给盆花 Iron is an essential element of plant growth and development, is an indispensable condition for the formation of chlorophyll. In calcareous soils of northern China, the content of iron is relatively abundant. However, the activity of iron is limited due to the high alkalinity and high pH of soil, which leads to the significant reduction of soluble iron content. For some acidic soil flowers (such as rhododendrons, camellia, jasmine, razor clams, cycads, milan, smile, banyan, etc.) far from meeting their iron needs, thus affecting the normal growth and development of plants. In addition, some incorrect methods of applying iron fertilizer can also make the iron lose its activity and can not exert its due effect. So give pot flowers