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为探明三七皱缩型病毒病的发生规律,采取系统调查法开展了历时3年的调查。结果表明:三七皱缩型病毒病在三七整个生长期均可发生,表现出波浪式起伏、峰值多、峰期历时长的特点。高峰期出现时间、数量及峰值的大小因七龄及各年气候条件的不同而不同,峰值通常出现在4月下旬、5月中旬至5月下旬、6月下旬至7月下旬、8月、9月中旬至9月下旬、10月、11月中旬至12月上旬,同龄七不同年可因气候变化而有所前移或后延10~15 d;高龄七病情明显重于低龄七。建议根据皱缩型病毒病发生规律,生产上从选育无病种子、种苗入手,注重对媒介昆虫的控制,加强田间管理,以避免或减轻病毒病的发生危害。
In order to find out the rule of Panax Notoginseng virus disease, a systematic investigation was carried out for 3 years. The results showed that Panax Notoginseng virus could occur in the whole growth period of Panax notoginseng and showed the characteristics of wave undulation, many peaks and long peak period. The peak time, the number of the peak and the size of the peak due to different ages and the climatic conditions of different years, the peak usually occurs in late April, mid May to late May, late June to late July, August, From mid-September to late September, from mid-October to early December, seven different years of the same age can be moved forward or delayed by climate change for 10-15 days. The senior-seven-stage illness is significantly heavier than the younger age. According to the law of occurrence of shrinkage virus disease, it is recommended to start with the selection of disease-free seeds and seedlings in production, pay attention to the control of vector insects, and strengthen field management to avoid or reduce the occurrence of virus diseases.