采用煮沸法,可使水中可溶性碳酸氢盐变成碳酸盐大部分析出,沉淀于底部,其上部清水成为钙、镁盐较少的水,称作软化水或软水,这种水对南方花卉是有利的。但煮沸的同时水中气体大量逸出,特别是含氧量丧失,又是此举的一个弊病。所谓凉开水长期使用对花卉不利,主要就是指这一点。怎样使凉开水重新溶气溶氧呢?一个简单方法就是用养鱼气泵进行充气充氧,使含 Boiling method, the water soluble bicarbonate into carbonate precipitation most, precipitation in the bottom, the upper part of the clear water into calcium, magnesium salt less water, called the softened water or soft water, this water to the South Flowers are good. However, boiling water vapor while a large number of escape, especially the loss of oxygen, but also a drawback of this move. The so-called cold water long-term use of flowers on the negative, mainly refers to this point. How to re-dissolved cold water dissolved oxygen it? A simple method is to use a fish-fed pneumatic oxygenation, so that