How to Grow Cynanchum glaucescens Well? An Analysis of Planting Methods and Technical Key Points
Cynanchum glaucescens, also known as Yuanhua leaf swallowwort, cough medicine, and knot-dissolving herb, is a type of traditional Chinese medicinal material, mainly using its dried rhizome and roots as medicine. It is currently cultivated in Zhejiang, Jiangsu, Jiangxi, Hunan, Guizhou and other places in China. Its main effects are dissipating phlegm and relieving cough, and it is used to treat symptoms such as cough with profuse phlegm and chest fullness with panting. So do you know how to grow Cynanchum glaucescens? Let us learn about its high-yield cultivation techniques together below.
1. Field preparation
Cynanchum glaucescens has the characteristics of preferring warmth and moisture and not tolerating drought, and it is generally suitable for planting in plots with deep soil layers, sufficient soil fertility, and rich humus content. Next, the terrain of the planting site should be relatively flat, with open terrain, sufficient sunlight, abundant water resources, and convenient drainage and irrigation. When preparing the land, it should be turned and leveled multiple times, and base fertilizer should be applied heavily, mainly using decomposed livestock manure or compost, applied together with phosphate fertilizer. After fertilizing, deep plow again, mix the base fertilizer evenly, and finally, according to the terrain of the planting site, reasonably open furrows and make beds, and rake the bed surface level before cultivation.
2. Planting methods
Cynanchum glaucescens generally has two planting methods, namely seed propagation and transplanting of seed stems and seedlings. Regardless of which propagation method is used, the best planting time is from the end of March to the beginning of April each year. The planting spacing needs to be determined according to the fertility of the soil, and it is generally planted according to the standard of 30 to 40 cm between rows and 30 cm between plants. For seed propagation, the seeds need to be soaked in warm water first to promote germination before planting, and after covering with soil to conceal the seeds, straw or plastic film should also be covered, which can increase the emergence rate. For transplanting of stem seedlings, select 2 or 3 nodes of rhizomes cut from below the root collar for planting, and after planting, enough water should be poured to settle the roots, which can increase the survival rate.
3. Field management
After the seeds of Cynanchum glaucescens emerge, we should remove the straw or film and do a good job of thinning and replanting seedlings. Next, the growth rate of Cynanchum glaucescens at the seedling stage is very slow, so we should carry out intertillage and weeding from time to time to promote nutrient absorption, enhance soil permeability, and increase the growth rate of Cynanchum glaucescens. When the seedlings of Cynanchum glaucescens grow to about 15 cm, we need to carry out the first topdressing, and the topdressing is mainly urea, with one topdressing every half a month afterward, and the amount of fertilizer should not be too large. When fertilizing in September, we need to use phosphate fertilizer or cake fertilizer, compound fertilizer and other fertilizers for fertilization to promote the yield of Cynanchum glaucescens. In addition, we should pay attention to the management of field moisture, keep the soil moist, and pay attention to drainage.
4. Pest and disease control
The resistance of Cynanchum glaucescens is actually relatively strong, and its most common disease is nematode disease, which mainly harms the roots of Cynanchum glaucescens and seriously affects its yield. Before the disease occurs, we should pay attention to crop rotation, improve sowing, and apply fertilizer scientifically to enhance plant resistance and do a good job of field sanitation, which can achieve a very good preventive effect. In the early stage of the disease, we can use dibromochloropropane for poisoning and killing. In addition, Cynanchum glaucescens is also greatly harmed by aphids, which have a relatively large impact on its yield and quality, and dimethoate emulsifiable concentrate can be used for control.
The above is the planting method of Cynanchum glaucescens brought to you by the editor today, and I hope it can help friends who grow Cynanchum glaucescens and those who want to grow it. Thank you all for your long-term support and encouragement to the editor. Your reading is the affirmation of the editor's work, and at the same time I wish everyone smooth planting in the new year.