1, soil preparation and fertilization
Rehmannia likes a sunny and warm planting environment. There are also some requirements for land. It can't be planted in a place with hard soil, which will lead to abnormal underground roots. When planting Rehmannia glutinosa in a low-lying place, the roots will be too wet and the roots will rot, so choose a place with deep soil layer for planting. After selecting the geology suitable for planting, the whole land should be turned over before planting Rehmannia glutinosa, so as to remove harmful impurities and pests as much as possible, and then the base fertilizer should be spread on the soil first, and then the planting can be carried out once.
2. Scientific sowing
Now that science is more and more developed, there will be some more scientific and correct planting methods to help us improve the yield and quality of this plant. The general planting methods are seed sowing and tuber planting. Before planting, it is necessary to turn over the ground and disinfect before sowing. When planting tubers, we should choose some plants with strong vital signs to ensure the survival rate of rehmannia glutinosa.
3. Reasonable close planting
The density between rehmannia plants also needs attention, which is generally managed according to the fertility of the soil. If the land is not fertile and barren, the distance between plants should be about 5 cm apart. If it is fertile soil, the distance between plants should be about 15 cm apart. Reasonable planting according to the plant density can ensure the nutrient absorption of Rehmannia glutinosa and improve the yield.
4. Field management
When planting Rehmannia glutinosa, we should pay more attention to the management in the field and focus on the emergence of Rehmannia glutinosa. Because the root system of Rehmannia glutinosa is shallow, the general method of weed removal will hurt the rhizome of Rehmannia glutinosa, so when we remove weeds near Rehmannia glutinosa, we can only pull them out by hand. Rehmannia glutinosa is a kind of plant that needs a lot of nutrients, so it needs topdressing twice more during planting, but Rehmannia glutinosa doesn't require much water, so it can be watered normally.
5, pest control
During planting, we should also pay great attention to whether there are pests and diseases. Generally, the pests and diseases of Rehmannia glutinosa are caused by high humidity. Once germs are produced, it will destroy the stems and leaves of Rehmannia glutinosa and even the whole land, so we can use Bordeaux mixture and carbendazim to prevent and control it in advance to ensure the quality and yield of Rehmannia glutinosa.