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金叶女贞褐斑病是近年来河南、河北、山东和江苏等地区,在高温高湿季节极易发生的一种常见病害。河南濮阳城市绿化中大量采用了金叶女贞作模纹色带造型和大色块种植等,但由于片植密度过大,养护管理不到位,每年6~9月都会发生褐斑落叶病,造成叶片掉落,新叶嫩芽不能及时抽出,甚至植株成片光秃。近几年,笔者积极采取综合预防措施,在雨季发病高峰期,有效降低了该病的发病率。发病症状
Golden leaf privet leaf spot is Henan recent years, Hebei, Shandong and Jiangsu and other regions, extremely vulnerable to high temperature and humidity season, a common disease. Urban greening in Puyang, Henan Province, has adopted a large number of gold leaf privet for modeling ribbons and large color block planting, etc., but due to excessive planting density, conservation management is not in place, brown leaf spot disease occurs from June to September every year, Cause the leaves fall, new leaves can not be bud timely extraction, and even plants into a piece of bare. In recent years, I actively take comprehensive preventive measures, peak incidence in the rainy season, effectively reducing the incidence of the disease. Symptoms