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夏天无Corydalis decumbens Pers.为罂粟科植物,地下块茎入药。江西余江县自1974年起将夏天无由野生变为家种,目前已有大面积栽培。作者在产地对夏天无进行了观察,发现夏天无有菌核病和霜霉病为害。其中尤以夏天无菌核病为害严重,发病率可达60%,植株成片死亡,影响产量和质量。现将两种病害的为害症状、发生特点、防治方法介绍如下,供参考。
Summer without Corydalis decumbens Pers. For Papaveraceae plants, tubers underground. Yujiang County, Jiangxi Province, has changed from summer to early summer without any wild species. Currently, large-scale cultivation has taken place. The author observed no summer in the area of origin and found no sclerotinia and downy mildew in the summer. Especially in summer asepsis serious damage, the incidence rate of up to 60%, plant deaths, affecting the yield and quality. Now two kinds of disease damage symptoms, occurrence characteristics, prevention methods are described below for reference.