Seedling stage: Spraying with 0.02-0.04mg/L (10-20kg of water per capsule) solution can enhance the cold resistance of southern spring seedlings and increase yield by more than 10%.

      Growth period: The use of brassinolide can enhance plant vitality, improve stress resistance, and continue to exert leaf functional advantages, without premature aging, pod growth, grain growth, and weight gain. The yield increase rate is 22.6%.