What are the planting techniques of Ziyu Huai yam?

I believe everyone has eaten Huai yam, but there is a kind of purple yam with purplish red meat, which is very popular in the market recently, so let's introduce its planting technology.

What are the planting techniques of Ziyu Huai yam?

1. Land selection and preparation

Purple yam is a deep-rooted plant, so it is necessary to choose plots with deep soil, loose and fertile soil, warm soil, groundwater level above 1 meter and good drainage. Ploughing should be carried out before sowing, and after ploughing, a ridge with north-south orientation, 70cm border width and unlimited length should be made, ditch in the middle of the ridge, and then apply a sufficient amount of base fertilizer.

two。 Seed selection treatment

Should choose disease-free, non-rotten, smooth tubers, cut into 6-10cm length, each tuber should have a terminal bud. The selected seed potatoes need to be disinfected, ventilated and dried, and planted after the wound heals.

3. Planting time

Planting and raising seedlings in the greenhouse from the end of March to the beginning of April, seedlings and transplanting in North China are generally planted in mid-late April. As long as the surface is not frozen, the earlier the seedlings are planted, the better. Adequate soil moisture must be ensured before planting, and no watering after planting, in order to promote the root system of yam seedlings.

4. Planting

Ziyu Huai yam can be planted directly or transplant seedlings. The former is to put the treated tubers according to the prescribed plant spacing and a certain direction on a sunny day, and then cover a layer of thin soil. Sowing and covering with thin film; the latter should choose greenhouse to raise seedlings, apply basic fertilizer, and sprinkle 5-6cm thick clean fine soil on it, in order to increase the temperature.

5. Field management

Topdressing: topdressing is needed for 2-3 times during the whole growth period. When the seedling is about 10 cm high, it is combined with ploughing and weeding for the first time to topdressing fertilizer, generally applying 20 kg urea per mu. The key period for the growth and expansion of potato blocks is from August to mid-September, which is usually spread with 10 kg potash fertilizer per mu and applied to the root cracks, and then irrigated with horse racing water. At the same time, potassium dihydrogen phosphate was sprayed on leaves every 10 days in sunny afternoon, for a total of 3 times.

Irrigation: in case of long-term dry weather from July to August, shallow water should be properly irrigated once to do a good job of drought resistance. In addition, it is necessary to lay a good foundation in the early stage and manage the ditch system in the middle and later stages to keep there no stagnant water in the field.