What are the control methods for rapeseed viral disease?

(Agricultural Wealth Network) Preventing infection at the seedling stage is key. 1. Choose double-low rapeseed varieties of the cabbage type, which are relatively resistant to the disease. 2. Appropriately delay the sowing date. In years of severe epidemics, delaying sowing by 10 to 15 days can avoid the disease and reduce the damage. 3. Control aphids and repel aphids to prevent the disease. Before emergence and from after emergence to the 5-leaf stage, strengthen the control of vegetable aphids near rapeseed fields to reduce the spread of the virus by migratory winged aphids. Set up yellow sticky boards to trap and kill aphids. 4. Strengthen seedling-stage management. Keep the seedbed far from cruciferous vegetable fields, apply fertilizer and irrigate frequently during the seedling stage, remove diseased seedlings before transplanting, and set up barriers around the seedbed such as planting tall-stalked crops, which can reduce the migration of winged aphids onto rapeseed seedlings.