The Latest Technical Method Tutorial for Field Management of Glehnia (Sand Ginseng)
Glehnia is the root system of the Campanulaceae plant Glehnia (Glehnia littoralis), a traditional Chinese medicinal herb in our country, with the effects of nourishing yin and clearing heat, moistening the lungs and resolving phlegm, and benefiting the stomach and promoting body fluid production. It is often used for conditions such as chronic cough due to yin deficiency, phthisic cough with bloody sputum, and dry cough with little phlegm. Doing a good job of daily management during cultivation can effectively improve yield and quality. Now let's take a look at the field management techniques for Glehnia together.
1. Intertillage and Weeding
After Glehnia is sown and the seedlings emerge, the first thing to do is weed, because weeds will affect the growth of the seedlings, especially when sowing in spring. The seedlings emerge around Grain Rain, when the temperature is suitable and the rainfall is abundant, so weeds grow relatively quickly. In addition, moderate intertillage combined with weeding can promote the growth and development of the seedling root system. After that, intertillage and weeding must be carried out several more times, with the depth of intertillage increasing each time, keeping the soil loose and permeable to encourage the roots to grow downward. When the seedlings have already grown long and the entire seedbed surface is covered by their stems and leaves, weed growth is then restricted, so there is no need to weed; when weeds appear, simply pull them out by hand.
2. Fertilizer and Water Management
If you want Glehnia to grow quickly, fertilizing is an important measure. Topdressing should be done 2-3 times each year. The first time can be at the seedling stage, after weeding, watering the seedlings with thin manure and livestock water to promote seedling growth. The second time is in May-June, when 15 kg of diammonium phosphate can be applied per mu; the third time is in July, with compound fertilizer applied as topdressing, and the amount applied depends on the growth condition of the plants. If the soil fertility is relatively poor, the amount of fertilizer can be appropriately increased. After each fertilization, water immediately to avoid the fertilizer being too concentrated and burning the plant stems and leaves, which would affect the normal growth of Glehnia.
3. Pest and Disease Control
The common diseases of Glehnia include root rot, brown spot disease, and rust disease. They all affect the yield and quality of Glehnia, and in severe cases cause plant death, so disease control must be done carefully. When root rot occurs, Tuzet can be sprayed for control; for brown spot disease, iprodione can be sprayed for control; when rust disease occurs, triadimefon can be sprayed for control. Among insect pests, there are cutworms, locusts, and aphids. Cutworms mainly damage the root system, continuously gnawing on the roots and stems, and trichlorfon can be sprayed to drench the roots for control; locusts and aphids gnaw on leaf tissues, and Imidacloprid or dimethoate can be sprayed to kill them.
4. Harvest
From autumn to the cold season is the harvest season for Glehnia. If it is planted on flat land, mechanical operation can be used for harvesting, while on larger sloping land, manual harvesting must be adopted. When harvesting, dig a 60 cm deep trench at the end of the plot to expose the roots of Glehnia, lift them out by hand, and remove the leaves. Then take out the upper part of the head of the shaved Glehnia, and after cleaning, sort them by size.
The above is an introduction to the field management techniques for Glehnia. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.