When the seedlings are about 15 cm high, apply 1,000 kg of thin human and animal manure water every 666,7 m2, and water after application; apply 15 kg of urea every 666,7 m2 from June to July. Or apply 1,500 kilograms of thin human and animal manure water, and fertilize 2 to 3 times in the second year. After planting, combine watering every spring and apply 15 kilograms of compound fertilizer every 666.7 meters. . Harvest the buds in summer when the flowers are not open and remove impurities. Sophora japonica (Sophora japonica) is also known as White Sophora japonica, National Sophora japonica, Domestic Sophora japonica, Bean Sophora japonica, Red-leaf Sophora japonica, Golden medicine tree and house-protecting tree. Sophora japonica, pine, cypress and ginkgo are all ancient and famous trees in my country. It grows wild on hillside roadsides or planted in gardens.