Astragalus membranaceus is a deep-rooted plant with strong cold tolerance, but it is afraid of heat and waterlogging. It should be cultivated in sandy soil with deep soil layer, loose and fertile soil and good drainage. When the temperature is too high, plant growth is inhibited. When the soil temperature is high, it often causes root rot, the soil is thick, the plant grows slowly, the main root is short, there are many lateral roots and the yield is low. The seed coat is hard and the water absorption is poor. Seed germination doesn't like high temperature. When the local temperature is 7-8 degrees, the soil keeps a certain temperature, and it usually takes 1-2 weeks to germinate, and the germination temperature is 14- 15 degrees. Avoid continuous cropping. It is not suitable for continuous cropping with potato, atractylodes macrocephala and chrysanthemum. Severe saline-alkali land and waterlogged depression are not suitable for planting.
The seedlings of Astragalus membranaceus are taller, thicker and denser than Astragalus membranaceus. 1 ~ 4 true leaf is a compound leaf with three feathers, and the fifth true leaf begins to appear, with 5 leaflets, gradually increasing, reaching 13 ~ 27 leaflets when mature; The lobules are large, 7 ~ 30mm long and 3 ~10 mm wide; Astragalus membranaceus is sparsely pubescent with smooth hair surface. The second true leaf is a pinnate compound leaf with 5 leaflets. At maturity, there are as many as 25 ~ 37 leaflets, 5 ~ 10 mm in length and 3 ~ 5 mm in width. The surface of Astragalus membranaceus pods is black pubescent, and the surface of seed coat is decorated with complex reticular structure. Astragalus mongholicus has hairless pods and shriveled seed coats. The pollen grains of Astragalus membranaceus are nearly spherical, and the germination groove is short and wide.
Astragalus likes cool, cold, drought, heat and waterlogging, and is suitable for planting in sandy loam with deep soil layer, rich humus and strong water permeability. Strong saline-alkali soil is not suitable for planting. The vertical growth of root system can reach more than 1 m, commonly known as; Post it. Deformation in the slow growth area of soil sticky roots; Thin soil layer, many roots and branches; Chicken feet are of poor quality. Avoid continuous cropping, and it is not suitable to rotate with potatoes and flax. The hard rate can reach 30%-60%. In the year of live broadcast, only the long stems and leaves do not bloom, and the next year they blossom and bear fruit.