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调查分析了广西柠檬疫菌褐腐病的田间发病因子:高温多雨、果园积水、郁闭、通风透光不良、湿度大、管理粗放、树势衰退和抗病力差等因素,是导致柠檬田间发生疫菌褐腐病的主要因子。该病发病迅猛,导致叶片及果实大量脱落、树势衰退、产量锐减。根据柠檬疫菌褐腐病的发病特点,采取开沟排水、合理修剪,改善果园通风透光条件;加强管理、增施有机肥,增强树势;冬季清园,改善果园生态环境;喷药保护等综合防治措施,及时控制了病害的蔓延和扩散,减轻了病害为害。对柠檬产区控制疫菌褐腐病的发生具有参考作用。
Investigation and analysis of the factors causing brown rot disease in Guangxi: hot and rainy, orchard water, canopy water, poor ventilation and light, high humidity, extensive management, the decline of tree vigor and poor disease resistance, The main factor of brown rot occurred in the field. The rapid incidence of the disease, leading to a large number of leaves and fruits off, tree decline, production dropped sharply. According to the incidence of brown rot caused by Phytophthora radiodurans, adopt ditching drainage and reasonable pruning to improve the ventilation and light conditions of orchards; strengthen management and increase organic fertilizers to enhance the vigor of the trees; improve the orchard ecological environment in winter and in the orchard; And other comprehensive prevention and treatment measures in a timely manner to control the spread and spread of disease and reduce disease damage. Leymus control lemon blight on the occurrence of a reference.