What are the common propagation methods for yam?
Yam, also called Chinese yam, is surely a Chinese medicinal vegetable that everyone is very familiar with. It has extremely high medicinal value, and has a very long history of cultivation and consumption in our country. The market for yam is now fairly good, and more and more people are growing it. When growing yam, how to propagate it is a very important task, and it is the key to ensuring whether it can be grown continuously and normally. Below, the editor brings you the propagation methods for yam. Let's take a look!
1. Propagation by reed head
Every year in October-November, when the yam matures, dig out the root of the yam, then select a reed head with a short neck, plump and full buds, thick and strong, and free of wounds, pests and diseases as the propagation parent. Then break it off at a position about 18 cm along the reed head, and place it in the sun to dry for about 3 days to promote healing of the wound. Then dig pits in the soil for storage, and when the overwintering ground temperature stays above 5°C, do a good job of deep plowing and fertilizing. Keep the row spacing at about 40 cm and the plant spacing at about 18 cm, and make beds ready for planting. Water promptly after planting, and under normal management, roots will form and seedlings will emerge after about 2-3 weeks.
2. Propagation by aerial bulbils
Propagation by aerial bulbils is mainly carried out through yam beans. First, after the yam matures, pick off the yam beans, then store them in dry sand. Take them out around February-April in spring, then sun them for a few days. Since yam beans have fairly strong sprouting ability and their disease resistance is not weak either, they usually do not need to be sprouted before sowing. When sowing, keep the plant and row spacing at about 10*22 cm. Dig the sowing holes, put about 3 yam beans in each hole, then cover with 5 cm of fine soil. Do a good job of sowing management, and seedlings will emerge after about two weeks.
3. Propagation by root tubers
Propagation by root tubers, as the name suggests, means using root tubers for propagation. First, select mother roots that are 1 m long and about 3 cm in diameter. Then cut the root tubers into small sections of about 18 cm, and mark each small section so that they can be identified later for management. After marking, dip the cut surface into lime powder to coat it with an appropriate amount of lime powder. Then sun them, and when sunning the seed sections, pay attention to wind and rain to avoid injuring the root tubers. When the small sections show cracks, the temperature is above 13°C, and the average low temperature is around 11°C, planting can begin. When planting, be sure to dig water furrows well, maintain good planting density, dig the planting holes well, place the root tubers in vertically, cover with soil and form ridges, and manage them well.
The above is a brief introduction to yam propagation methods. There are quite a few propagation methods for yam. No matter which propagation method is used, each has different advantages and disadvantages, and each is also suited to different environments and planting scales. Therefore, when propagating, everyone should pay attention to choosing a reasonable propagation method. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!