How to grow Astragalus membranaceus

Astragalus membranaceus has strong adaptability and can be planted in general soil. More resistant to drought, afraid of stagnant water. It is cold and can survive the winter in the field, but the green soil is deep, loose and fertile. No repetition.

Cultivation management: ① planting method: seed breeding. Sowing before winter or sowing in spring is acceptable. Before winter, Frosts Descent sets up the Winter Festival, and spring sows from the Spring Equinox to Guyu Festival. It should be noted that the hard seed is more, the water absorption is poor, and the emergence rate is low, so we should grasp the seed collection season and seed collection period. The seeds are harvested when the seeds are brown, and become hard when the seeds become black and spotted, and rarely germinate. In order to improve the emergence rate, seed promotion treatment should be made before sowing. Soak the seeds in warm water of 50 ℃, stir to cool at any time, soak the seeds with water for 12 hours, remove the seeds into a cloth bag to promote germination, and then sow. The seeds of Radix Astragali usually sprout in 3 days. If you can not sow in time, it will cause losses, so generally do not do germination treatment to sow directly, but do the germination test in advance. 1.5 kg of new seeds are used per mu. Before sowing, select sandy soil with high terrain, deep soil layer, good drainage and strong permeability, apply sufficient bottom fertilizer and plough fine rake to make wide and flat border. After watering for 5 days, when you can enter the border, you can use iron rake to level the border surface, open a shallow ditch 2 cm deep according to the row spacing of 23 ~ 27cm, spread the seeds evenly into the ditch, push them down the ditch with a large hoe angle, and closely combine the seeds with the wet soil at the bottom of the ditch. Then hold the living soil of the border surface flat and fine. Due to different varieties, some only grow stems and leaves in the first year, do not blossom and seed in the first year, blossom and seed after two years, and some varieties blossom and seed in the same year. It is commonly known as hard rod and soft rod Astragalus membranaceus. ② field management: keep the soil moist before emergence; water less and loosen the soil more after emergence to promote root rooting. When the seedling is 6 Mel 7 cm, the distance between the plant and the plant is 10 mi 13 cm. Topdressing was carried out when the seedling height was 17MUE 20cm, ammonium sulfate 10MUE 15kg per mu, fermented cake fertilizer 25MUE 40kg. When it is about to blossom, the water demand will gradually increase, and the watering times can be increased appropriately. When the seeds mature in Lesser Heat, there should be less watering or no watering. If Rain Water is too much, it should be drained in time to prevent rotting roots. Harvest processing: after planting in the autumn of the current year or after the autumn of the second year, the aboveground stems and leaves wither and harvest. Dig out the roots carefully, shake off the soil, remove the Reed stems, dry them, and sell them in small handfuls. Generally speaking, the yield of dry goods per mu in the same year is 250 Mu and 300 kg.

Main diseases and insect pests: red root disease (also known as yellow purple plume disease) is easy to occur from July to August, and the pests are drill worms and ground tigers.