杜鹃花是世界著名花卉,也是我国传统的十大名花之一。每当仲春时节,在我国长江以南各地,此花满山怒放,五彩缤纷,灿烂似锦。它往往把人们带到精神焕发、生机盎然的境界。人们在家庭也多喜欢莳养杜鹃花,可是在莳养的过程中,往往多易发生黄化病,发病的原因多是生理性病害。发病后,笔者在以前曾采用硫酸亚铁根外施肥等措施进行整治,但却往往效果不佳,甚至弄巧成拙,故有人称它为不治之症。但有一些人对此病不加采取措施,听其自然, Azaleas are world famous flowers and also one of the top ten famous flowers in our country. Whenever mid-spring season, all over the south of the Yangtze River in our country, this flower full of mountains in full bloom, colorful, brilliant. It often brings people to a state of rejuvenation and vitality. People in the family also like to raise rhododendrons, but in the process of raising, often more prone to yellow disease, the pathogenesis of mostly physiological diseases. After the onset, the author had previously used ferrous sulfate fertilizers and other measures to carry out remediation, but often ineffective, or even self-defeating, so some people call it an incurable disease. However, some people do not take measures to deal with the disease, listen to it naturally,