Yam planting methods: sowing and planting, soil plowing, and field management.

1. Sowing and planting

When planting yam, choose strong, undamaged rhizomes, cut them into 10 cm segments with a knife, then apply plant ash to the cut surface and place in a cool place Let it dry in a place, and then sow the root pieces in soil ditches with a row spacing of 100 cm and a depth of 10 cm, and keep the plant spacing at about 30 cm.

2. Soil plowing

To plant yam, you should choose fertile, loose and well-permeable fields, and then apply decomposed farmyard manure, urea, potassium sulfate and other fertilizers to the soil surface. , then use a hoe to plow the soil 25 cm deep, bury the fertilizer into the field, and finally dig a trench with a depth of 1 meter and a width of 25 cm in the field.

3. Field management

In the early stage of yam planting, you can insert your fingers into the soil. If your fingers are wet, there is no need to water. Wait until the seedlings grow to 1 meter before watering, and then wait for 20 days. Water again to keep the soil moist, and when the stems and vines grow to 30 cm thick, build a 2-meter-high herringbone to pull the stems and vines upward.

Propagation method

1. Reed head propagation method: The section with buds on the upper end of the tuberous root is often used as seed, which is called reed head. When digging yam in the first winter, choose tubers with short necks, thick necks, no branches, and no pests and diseases. The tubers can survive the winter underground.

The roots have weak water absorption and will wither soon after being cut. They prefer a slightly humid environment. Dioscorea requires sunny, leeward sandy soil and loam soil. The soil reaction is slightly acidic to slightly alkaline, and the soil layer is deep and fertile. Soil that is heavy, sandy or highly alkaline is not suitable for planting.

2. Breeding and propagation method of leftover seeds: before and after frost, when the above-ground stems and leaves of dioscorea are about to wilt, pick off the leftover seeds from the leaf axils or pick up the leftover seeds that have fallen to the ground. After drying for 2-3 days, place them in a bamboo basket. Cover or put into wooden box for storage. During the storage period, attention should be paid to rodent damage and ventilation is required. Propagating with leftover seeds requires one year of cultivation to obtain root tubers for seeding.