Planting techniques of Radix Isatidis
The growth habits of Radix Isatidis do not have great requirements on the soil, basically the general soil can be planted successfully. Resistant to severe cold, like warmth, but afraid of water stains, China's Yangtze River Basin and the vast northern areas can grow normally.
Radix Isatidis is propagated by seeds, sown in spring and sown in summer. Spring sowing: from March to May, choose good drainage, loose and fertile soil, according to the row spacing of 18-20 cm, draw a ditch 15 cm deep. Spread the seeds evenly into the ditch, cover the soil, step on the foot once, or push it twice with a big hoe and water it flat. It usually takes about 18 ℃ and emerges in 7-10 days. Summer sowing: from June to July, the method is the same as spring sowing, and seedlings emerge in 4-5 days.
The height of the field management seedling is about 6 cm, and the plant distance is about 5 cm. From Lesser Fullness of Grain to Mangzijie, 15 kg of ammonium nitrate and 15 kg of superphosphate can be applied per mu, watering after burying the soil, the Summer Solstice cutting leaves in the summer festival, and 10 kg urea when watered 4-5 days after leaf cutting.
Harvest and process spring sowing Radix Isatidis to cut the leaves once in the summer, cut off the leaves from the base and dry them in the sun for a day or two. Cold Dew to Frosts Descent planed the roots, dried them and used them as medicine. If sown in summer, the leaves will be cut and dried when planing, and the root planing season will be the same as above.
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