Soaking: Soak the seeds in 0.01mg/L (40kg of water per seed) solution for 6-12 hours, with a ratio of 1:0.8 between the solution and seed. After the seeds are wrinkled in a cool place, sowing can promote the growth of soybean seedlings, increase plant height by 14.7%, increase root fresh weight by 59.3%, and enhance nitrate reductase activity by 1.1-2.8 times.

       Seedling stage: Spraying cotyledons with 0.01mg/L (40kg of water per seed) solution after emergence can increase the activity of nitrate reductase in soybean seedlings, increase the absorption and transformation of nitrate fertilizer, increase plant height and substance accumulation, and enhance crop resistance to adverse environments. After 6 days, the plant height increased by 10% to 15%, and the fresh root weight increased by 40% to 60%.

       Flowering period: Spraying the stem and leaves with 0.15 mg/L (2.7kg of water per grain) solution can resist lodging, reduce withered pods, and increase yield by 7% to 12%.