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核心提示:根腐病是三七的主要病害之一,该病的田间症状表现有两种:一是地上部分初期叶色不正,叶片萎蔫,叶片发黄脱落,地下部分腐烂;二是地下根部根系受害,叶片向一边下垂萎蔫,及时拔除还可以加工利用,否则整个块根腐烂。根腐病全年均可发生,3~4月和8~10月为两个发病高峰期。由于该病是土传性病害,致病因素复杂,现查明的病原茵有四种,其中有细菌和真菌。细菌性根腐七农称“绿臭”。主要发生于种苗移栽田,在出苗期间引起芽腐。该病在二、三年三七整个生长期间都有发生,一般在芦
Root Tip: Root rot is one of the main diseases of Panax notoginseng, the symptoms of the disease in the field there are two: First, the aerial part of the early leaf color is not correct, the leaves wilting, yellow leaves fall off, the underground part of the rot; the second is the underground roots Root damage, leaf drooping to the side, timely removal can also be processed, or the entire root rot. Root rot can occur throughout the year, 3 to April and 8 to October for the two peak incidence. As the disease is soil-borne diseases, pathogenic factors are complex, there are four identified pathogen Yin, of which bacteria and fungi. Bacterial root rot seven farmers say “green smell ”. Occurs mainly in seedling transplanting fields, causing buds during emergence. The disease occurred during the entire growth period of Panax notoginseng in the next two or three years, generally occurring in Lu