Since the citrus decay disease is mainly transmitted by locusts in the field, it is difficult to control the cultivation of virus-free seedlings. Although controlling the number of locusts in the field can delay the damage to some extent, the most effective prevention and treatment method is the application of attenuated cross-protection technology. The main agents for controlling aphids in the field are 50% anti-Polycarb 2000-3000 times liquid, 20% Chinese and Western anti-imperolone or 20% anti-sweeping 3000-4000 times liquid, 40% hirudin 1000-1500 times liquid. Brazil's Pella Sweet Orange, Australia and South Africa's grapefruit varieties have achieved good control through the application of attenuated cross-protection technology. China is still in the research and experimental stage, and has obtained some attenuated strains with protective effects. It is conducting field trials in Chongqing and other places.
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