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1、盆土宜忌。杜鹃系酸性植物,其根须生长较快,根系较细,适于PH值4.5—6、疏松而富含腐殖质的酸性土壤。在碱性条件下,土壤中的铁大部分被固定,不能被根系吸收,导致叶片黄化,影响植株生长。而市场供应的杜鹃花,部分经销商从经济、简便考虑,以塑料盆装,其栽培基质多为蛙石填充,极不适宜杜鹃的生长。因此,买花后应换盆、换土。花盆宜选用泥瓦盆,大小以能容纳植株为度。因杜鹃根系较浅,花盆过大和栽植过深,容易积水引进烂根。盆土宜选用PH值在4.5—6用泥炭土、腐叶土配制的混合土,市售的君子兰土也可。
1, basin soil taboo. Rhododendron is an acidic plant, its root growth rate should be faster, more fine roots, suitable for PH value of 4.5-6, loose and rich humus acidic soil. Under alkaline conditions, most of the iron in the soil is immobilized and can not be absorbed by the roots, resulting in yellowing of the leaves and affecting plant growth. The supply of rhododendron market, some dealers from the economy, easy to consider, to plastic pots, and its cultivation of matrix mostly filled with frogs, very suitable for the growth of cuckoo. Therefore, after buying flower pots, soil replacement. Flower pots should use mud pots, the size to be able to accommodate plants for the degree. Due to rhododendron shallow roots, pots too large and planted too deep, easy to introduce stagnant water stagnation. Pentu should choose the PH value of 4.5-6 with peat soil, mixed humus leaf preparation of soil, commercially available Clivia soil can be.