Sowing: Quickly grind Sophora flavescens seeds 1-2 times with a rice mill to discolor the seed coat. When the color of the seed coat changes from brown to off-white, you can feel the fine powder by hand. Prevent excessive rolling and affect seedling emergence. Sowing time: spring sowing is from March 20 to April 20; summer sowing is from June 20 to July 10; autumn sowing should be early, after early September, in order to prevent some seedlings from freezing to death during winter, it should not be carried out again Sowing; winter sowing is carried out when the temperature drops below 5°C before the soil freezes, and no seedlings are produced that year. Seedlings emerge the following spring. The seeding rate is 22.5-30.0 kg/ha. The sowing depth is 3-5 cm. Field live broadcast: The row spacing is 40 cm, the plant spacing is 20-27 cm, 1-2 seedlings are left in each hole, the planting density is 82,500-96,000 plants/ha, and mechanical sowing is used.
Usually up to 2 meters high. Pinnate compound leaves; stipules lanceolate-linear, acuminate, alternate or subopposite, papery, variable in shape, oval, ovate, lanceolate to lanceolate-linear, glabrous above, raised below midrib . Racemes terminal, many flowers, slender pedicels, linear bracts, calyx campanulate, obviously oblique, corolla longer than calyx, white or yellowish white, flag petals obovate spoon-shaped, keel petals similar to wing petals, slightly Broad, separated or slightly commissural near base; ovary subsessile, style slightly curved, ovule numerous. The seeds are slightly constricted, the seeds are long ovate, slightly flattened, dark reddish-brown or purple-brown. Flowering in June-August, fruiting in July-10.
