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比利时杜鹃 (Ｒｈｏｄｏｄｅｎｄｒｏｎｈｙｂｒｉｄｎ) ,又叫西洋杜鹃 ,因其花色丰富 ,在元旦、春节开花 ,花期可延续 6 0天左右 ,已成为国内春节市场最主要的盆花之一。近年来 ,河南省的栽培面积逐年扩大 ,但杜鹃根腐病 (Ｐｈｙｔｏｐｈｔｈｏｒａｒｏｏｔｒｏｔ)经常造成3 0
Rhododendron (Rhododendron hybrid), also known as Rhododendron in the West, is one of the most important potted plants in the Spring Festival market in China because of its rich color. It blooms on New Year’s Day and Spring Festival and has a flowering period of 60 days. In recent years, the cultivation area of Henan Province has been expanding year by year. However, Phytophthora roota often causes 30