Control techniques of rapeseed virus disease

Virus disease is one of the main diseases of rapeseed, the affected plants affect the yield of about 20%, serious as high as more than 70%, generally in the year of less rain or the surrounding areas where vegetables are often planted, it is more susceptible to disease, the prevention and control of rape virus disease must take comprehensive control technology. First of all, disease-resistant varieties should be selected, the second is to control aphids in time, and the third is to prevent and control aphids at seedling stage. In the 9-leaf stage of rape 3, combined with the prevention and control of aphids, 800 times of 24% copper mixed fatty acid or 7.5% carbendazim 500 times solution, the above pesticides can be used for 2 times exchange control, which can effectively control the damage of rape virus disease.