向日葵列当在吕梁的发生危害及综合防治措施

Occurrence and comprehensive prevention and control measures of sunflower bloomrape in Lyuliang City

向日葵列当是一年生草本检疫性杂草,主要寄生在向日葵根部,汲取营养,可使植株矮小、瘦弱,不能形成花盘,为害严重时可导致植株枯死。该杂草在吕梁市7—9月份发生,一般造成向日葵减产20%左右。针对向日葵列当在吕梁市发生特点,我们加强植物检疫措施,从种子源头上把关,采取以农业防治为主、化学防治为辅的综合防控措施,有效减轻了列当的危害。

Sunflower bloomrape（Orobanche cumana Wallr） is a annual herbaceous quarantine weed. It can absorb nutrients at root of sunflower,which can cause the sunflower to be low,thin and can not forming flower discs,or even to die. The weed usually occurs at 7-9 month in Lyuliang city,the yield of sunflower reduced by about 20%. According to the characteristics of sunflower bloomrape in Lyuliang city,we strengthened the plant quarantine measures,strictly controlled the seed source,taken comprehensive prevention and control measures by the mainly agricultural control and auxiliary chemical control,which reduce the harms of sunflower bloomrape effectively.