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浙江省舟山地区的水仙(Narcissus)资源丰富,是我国水仙主要产区之一。近几年来,舟山林区水仙生产发展很快,现成为当地群众致富门路之一。然而由于水仙大褐斑病等病害的发生为害,造成很大损失,影响了水仙生产规模的扩大。褐斑病症状:在叶尖或叶片上部最初出现褐色的点状或椭圆形病斑,后来病斑伸长扩大形成褐色条斑,病斑外围有黄色晕圈。病斑长度可达0.5～6.0厘米,宽0.3～1.0厘米。病斑以上叶片很快失绿发黄直至干枯。后期在病斑部位可以看到很多聚生的深褐色小黑点,就是
Narcissus is rich in resources in Zhoushan, Zhejiang Province, and is one of the main producing areas of Narcissus in China. In recent years, Zhoushan forest daffodil production has developed rapidly, now become one of the local people get rich. However, due to the occurrence of diseases such as narcissus big brown spot damage, resulting in great losses, affecting the expansion of Narcissus production scale. Brown Spot Symptoms: The brown spots or oval lesions initially appear on the tips of the leaves or leaves, and later the lesion expands to form brown streaks with a yellow halo outside the lesion. Lesions up to 0.5 to 6.0 cm in length and width of 0.3 to 1.0 cm. The leaves above the lesion turned green quickly yellow until dry. Later spots in the lesion can see a lot of poly dark brown spots, that is