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上蔡县隶属驻马店市管辖,位于河南省的中南偏东部,驻马店市东北部,地处亚热带与暖温带的过渡地带。近几年来因病害死苗是成行成片的出现,已成为影响小麦高产的主要问题。现将在上蔡县发生较重的小麦越冬前病害的病原、苗期病症、发生规律与防治方法介绍如下。一、小麦根腐病1.病原、病症和发病规律病原属子囊菌门旋孢腔菌属。病菌以菌丝体潜伏于种子内外以及病株残体上越冬,小麦各生育期均能发病。该病在上蔡县的发生趋势呈逐年加重的
Located under the jurisdiction of Zhumadian City, Shangcai County is located in the south-central-east part of Henan Province and northeast of Zhumadian City. It is located in the transitional zone between subtropical and warm temperate zones. In recent years due to disease dead seedlings into a line into a film has emerged, has become the main problem affecting wheat high yield. Will occur in Shangcai heavier wheat before the disease pathogen, seedling disease, the occurrence of law and prevention methods are described below. First, the root rot of wheat 1. Pathogen, disease and pathogenesis The pathogen belongs to Ascosphaeroides Cochliobolus genus. Mycotoxins lurk inside and outside the seeds as well as diseased plants overwinter, the disease can develop in all growth stages of wheat. The occurrence of the disease in Shangcai County is increasing year by year