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朋友送来一盆巴西铁,来时株形整齐.翠绿的叶中带有金黄色条纹,非常好看。但养几个月后,却发现叶片上出现了许多淡褐色小病斑,叶片边缘有干枯状,经诊断是感染了叶斑病。于是加紧防治,但喷洒了几次常规杀菌剂,仍不见好转,并且病斑越来越多,扩展越来越快。请教朋友才知道.巴西铁叶斑病很容易产生抗药性,用普通杀菌剂效果不佳,只有专用杀菌剂才能杀灭病菌,并且要添加增效剂才有好的效果。
Friends sent a pot of Brazil iron, to plant shape when neat green leaf with gold stripes, very nice. However, after several months of incubation, it was found that there were many small brown spots on the leaves and the leaves had a dry edge. It was diagnosed as being infected with leaf spot. So step up prevention and control, but spraying a few times conventional fungicides, still no improvement, and lesions more and more, faster and faster expansion. Ask friends to know Brazil iron leaf spot is easy to produce resistance, with the general fungicide ineffective, only the special fungicides to kill germs, and to add synergists have a good effect.