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四、主要观赏植物的 营养与施肥 (八)兰花 Post(1952 )指出,就绝大多数(种)附生兰对肥料的需求而言,以有机分解物作为培养基较为理想。虽然,石砾或其他培养基栽培兰花,可被利用的养分甚少,但可采用营养溶液。此种营养液的组成为:每百升水含硝酸钙、磷酸一钾、硫酸镁及硫酸铵各100克,磷酸铁25克,并加入400毫升以下溶液:每升含硼酸3克、氯化锰2克、硫酸锌0.2克、硫酸铜 0.1克。 Laurie等( 1968)建议,对兰花苗,每次灌溉可配合施用20～9～17肥或成分较低的肥料(15克/100升水)。但他们尚未推荐盆栽兰花的施肥方案,仅提及栽培在树皮混合物培养基中的兰花,需进行定期施肥,而种植在蕨类纤维培养基的兰花则无需加以施肥。
IV. Nutrition and Fertilization of Major Ornamental Plants (8) Orchid Post (1952) pointed out that it is desirable to use organic decomposers as a medium for the vast majority of the needs of fertilizer. Although gravel or other medium cultivated orchids can be used very little nutrients, but the use of nutrient solution. The composition of this nutrient solution is as follows: 100 g of calcium nitrate, potassium phosphate, magnesium sulfate and ammonium sulfate per 100 liters of water, 25 g of iron phosphate and 400 ml of the following solution: 3 g of boric acid per liter, manganese chloride 2 grams, 0.2 grams of zinc sulfate, 0.1 grams of copper sulfate. Laurie et al. (1968) suggested that for orchid seedlings, fertilizers 20 to 9 to 17 or lower fertilizer (15 g / 100 liters of water) may be used with each irrigation. However, they have not yet recommended a fertilization program for potted orchids. Only references to orchids grown in bark mixture medium require regular application of fertilizers, whereas orchids grown in fern fiber medium need not be fertilized.