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近几年来,随着保护地番茄面积的不断扩大,原发生较轻的灰霉病已逐渐上升为主要病害,并对生产构成严重威胁,如果防治不及时,会造成很大损失。据我们多点调查,一般发病时损失15%～20%,流行时可达30%以上。因此,在生产上一定要重视对此病的防治,采取农业生态措施与化学药剂防治相结合的方法,是目前最有效的方法。一、发生规律与发病因素灰霉病为真菌性病害,病原为灰葡萄孢菌。病菌在土壤或病残体上越冬,通过伤口或衰弱的组织器官表皮侵入,随气流及农事操作传播,受环境因素影响
In recent years, with the continuous expansion of the tomato area in the protected areas, the former minor gray mold disease has gradually risen to the major diseases and poses a serious threat to the production. If the prevention and treatment is not implemented in time, it will cause great losses. According to our multi-point investigation, the general incidence of loss of 15% to 20%, popular up to 30%. Therefore, in the production must pay attention to the prevention and treatment of this disease, to take agro-ecological measures combined with chemical control methods, is the most effective way. First, the occurrence of the law and risk factors Botrytis cinerea is a fungal disease, the pathogen Botrytis cinerea. Bacteria overwinter in the soil or disease residues, invasion through the wounds or weak tissue and organ epidermis, with air flow and agricultural operations spread, affected by environmental factors