Control of rapeseed virus disease

(agricultural getting Rich Network) preventing seedling infection is the key. First, the disease-resistant varieties of Brassica napus double-low rapeseed were selected. Second, postpone the sowing date appropriately. Delaying sowing for 10 to 15 days in pandemic years can avoid disease and reduce harm. Third, control aphids, drive aphids and prevent diseases. Before and after emergence to the 5-leaf stage, strengthen the control of vegetable aphids near the rape field and reduce the migration and transmission of winged aphids. Set up a yellow board to trap and kill aphids. Fourth, strengthen the management of seedling stage. The seedling bed is far away from the cruciferous vegetable field, fertilizing and irrigating frequently at the seedling stage, pulling out the diseased seedlings before transplanting, and setting up a barrier around the seedling bed, such as planting tall stalk crops, can reduce the migration of winged aphids to rape seedlings.