How to do field management for Polygonatum? Mastering these key points is crucial
Polygonatum is a medicinal herb belonging to the Liliaceae family and has a fairly long history in our country. Polygonatum has various effects such as tonifying the spleen and moistening the lungs, and promoting fluid production to quench thirst, and it can be seen in many traditional Chinese medicine formulas. When we grow Polygonatum, management techniques are very important and directly determine the growth capacity of Polygonatum. So how should we manage it? Below, the editor brings you the key points for field management of Polygonatum. Let's take a look together!
1. Intertillage and weeding
Intertillage and weeding work is indispensable in the field management of Polygonatum. Especially during the seedling stage of Polygonatum, its root absorption capacity is weak. If weeds are not removed in time, most of the nutrients will be absorbed by the weeds, thus affecting the growth of Polygonatum. During the entire growth period of Polygonatum, we should weed at least about 4 times. Intertillage can not only achieve the purpose of weeding, but also improve soil quality and promote nutrient absorption by Polygonatum. After intertillage, earthing up should be done well to prevent Polygonatum from lodging, but in the later stage, chemical weeding should be stopped, and manual pulling of weeds should be the main method.
2. Water and fertilizer management
Nutrients and water are essential substances for the growth of Polygonatum. During intertillage, we can combine it with fertilization work. Apply sufficient decomposed farmyard manure, then when applying the last winter fertilizer, increase the amount of farmyard manure and add an appropriate amount of superphosphate. Apply it into the field by the furrow application method, and after fertilization cover it with a layer of fine soil to improve the conversion rate of the fertilizer. Polygonatum has a high demand for water, so we should also keep the soil moist, and water in time when the soil is dry. However, water should not be excessive either. If there is standing water in the field, drainage work should also be done well to prevent root rot from waterlogging.
3. Shading and intercropping
Because Polygonatum likes to grow in a cool and moist environment and is relatively sensitive to temperature changes. Therefore, when planting, we should also do a good job of shading. When shading, we can build a greenhouse. Or intercrop corn between the rows of Polygonatum, because corn is a tall-stalk crop and its nutrient demand is low, so it will not have too much impact on Polygonatum. When intercropping corn, we should do it in the two seasons of spring and autumn. Also pay attention to the row spacing, keeping it at about 50 cm. Otherwise, corn will also compete for the nutrients for Polygonatum's growth and affect the growth of Polygonatum. It should not be too far either, because if it is too far, the shading effect will be lost.
4. Later stage management
Polygonatum is generally harvested in spring and autumn, but the main harvest time is still in autumn, and Polygonatum that matures in autumn has better quality. Generally after about 4 years of planting, harvest in autumn after the aboveground part of the Polygonatum plant withers. Dig out the rhizome part of Polygonatum, then clean it and do the processing work well. Also pay attention to doing six kinds of work well, generally mainly through rhizome propagation. The seed retention time is generally in early spring, and plants with robust growth and no pests or diseases are selected as propagation rhizomes.
The above is a brief introduction to the key points of field management of Polygonatum. The field management work of Polygonatum is very important, and everyone must pay much attention when planting. Today's introduction ends here. This article is for reference only. Thank you all for reading and supporting.