Yam should be harvested at the end of October and beginning of November every year. Before harvesting, the supports and canes should be removed, and then the yam beans on the canes should be collected, and then machines should be used to dig trenches in the field. The soil is manually prepared, and the yam is taken out directly after it is loosened. After being taken out, the yam can be processed through various methods such as sulfur fumigation and steam treatment.

Machine harvesting of yam

The main edible part of yam is its underground tuberous roots. When harvesting, all the above-ground canes must be pulled out and bracketed It also needs to be cleaned. At this time, pay attention to collecting the yam beans on the canes. These are also edible ingredients and can be used to cook porridge or soup. After collecting, use a small dispensing machine or a pickaxe to place them between the two rows of yams. Ditch. The width of the trench should be about 25 cm and the depth should be between 60 and 80 cm.

Specific methods for harvesting yam

When planting yam, the spacing between the two rows is relatively narrow, so the width and depth must be controlled when opening the hook, and large-sized yam cannot be used. Machinery, if you use machinery to start work, you must use a small tractor to drive it, and you must choose a suitable drill bit, otherwise it will damage the underground yams and affect their quality after harvesting. After the trenching, the soil will loosen, and it will need to be cleaned manually, and then the yams in the soil can be dug out.

Processing yam by sulfur fumigation

After harvest, yam can be processed by traditional sulfuric acid method. During processing, fresh yam needs to be placed in a suitable container and soaked for 12 hours. Clean the soil on the surface, then put it in a pig cage or a special new kang, add sulfur for fumigation, and then take it out and expose it to the sun so that the moisture on the surface can dry quickly without losing the internal moisture. Then the yam can be processed well and its shelf life can be extended.

Processing yam with boiling water or steam

Yam after burning with wood can also be processed with boiling water or steam. Before processing, all the soil on the surface of the fresh yam needs to be removed and placed in a large wave. Heat an appropriate amount of water to boil, keep it boiling, then put the fresh yams directly into the boiling water and cook for about 10 seconds, take them out and dry them quickly. You can also put the washed yam in a steamer and steam it for about 30 seconds, then take it out and quickly dry the water on the surface to keep the surface dry. In this way, the yam can be processed well without affecting its quality. It will also give it a longer shelf life.