Southern rice black-streaked dwarf disease is a kind of destructive rice virus disease transmitted by the white-backed planthopper. According to the occurrence pattern and the harm of southern rice black-streaked dwarf disease in Huazhou from 2007 to 2016, and with the recognition of the disease symptom and insect vector, the authors found that:the severity of rice black-streaked dwarf disease was related with vector quantity, viral source capacity, rice species, planting patterns, rice sowing period, seedling bed position and climate condition. And a comprehensive control strategy was proposed, which included developing the technology for the earlier prevention and control, cutting off viral source, and defending against insects. The synthetic technical system against rice black-streaked dwarf disease, which adapted to rice growing region in western Guangdong, was built up and applied widely. As a result, the epidemic risk of rice black-streaked dwarf disease is prevented effectively, and remarkable social and economic benefits are obtained.%南方水稻黑条矮缩病为白背飞虱传播的一种毁灭性的水稻病毒病.笔者根据2007—2016年化州地区南方水稻黑条矮缩病发生和危害情况,通过对南方水稻黑条矮缩病病害症状和介体昆虫的认识,分析南方水稻黑条矮缩病发生的轻重与介体数量、毒源量、水稻品种、种植方式、水稻播期、秧田位置及气候条件等因素有关.提出全面实施"防控技术前移,切断毒源,治虫防病"的防治策略;形成适合粤西稻区特点的南方水稻黑条矮缩病综合防控的技术体系,并在生产上推广应用,有效预防控制南方水稻黑条矮缩病发生流行危害,取得了显著的社会经济效益.
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