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黄瓜靶斑病也叫棒孢叶斑病、“黄点病”等,是一种真菌病害。近年来随着保护地栽培的不断发展,病情逐年加重,已成为保护地黄瓜生产的重要叶部病害,并且可能对番茄等多种蔬菜造成为害。在严重时发病情况下,落叶率可达90%,造成大面积减产甚至绝产。发病原因:黄瓜靶斑病是由半知菌亚门多主棒孢霉菌(图1)引起。多主棒孢霉可以随种子,包括嫁接南瓜种子传播,但更多的是以分生孢子、厚垣孢子或菌丝体随病残体在土壤中越冬,翌年产生分生孢子,借气流或雨滴飞溅传播,在温暖、高湿的条件下引发黄瓜靶斑病。
Cucumber target spot disease, also known as Corynebacterium leaf spot disease, “yellow dot disease ” and so on, is a fungal disease. In recent years, with the continuous development of protected cultivation, the condition has been increasing year by year, which has become an important leaf disease of cucumber production in protected areas and may cause damage to tomatoes and other vegetables. In the case of serious disease, the rate of deciduous up to 90%, resulting in large-scale production or even cut. The cause of the disease: Cucumber target spot disease is caused by the penicillin subfamiliar Main rod spore mold (Figure 1). Corynebacterium diphtheriae can be spread with seeds, including grafted pumpkin seeds, but more with conidia, chlamydospores or mycelium overwintering in the soil with disease residues, the next year produce conidia, by air or Spread of raindrops, in warm, high humidity conditions cucumber target spot disease.