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玉米病毒病广泛发生,已从起初的次要病害上升为主要病害。该病由病毒侵染所导致,目前,已报道的侵染玉米的病毒种类已达40多种。该病发生趋势上升迅猛,面积广泛,造成严重的损失。
Maize virus disease occurs extensively and has risen from the original minor disease to the main disease. The disease is caused by virus infection. At present, more than 40 kinds of viruses have been reported to infect maize. The incidence of the disease has risen rapidly, covering a wide area and causing serious losses.