Cultivation techniques of Polygonum multiflorum

I. growth habits

Polygonum multiflorum likes mild climate and wet environment, and is afraid of dryness and stagnant water. The sandy loam with loose soil and rich humus is better. Strong adaptability, often wild in half-shady and half-sunny slopes, ditches, forest edges and other places, poor growth on clayey land.

Second, reproductive technology

The main results are as follows: 1. Cuttage propagation is mainly cutting propagation, but also striping and seed propagation. From April to May, select vigorous, disease-free, one-year-old mature vines, remove the tender stem, take its middle section, cut into 20 cm long cuttings, each root must have 2-3 nodes. Then, dip the lower part of the cuttings with yellow mud, after drying, plant on the ground where the fine seeds are leveled and raked, dig holes according to the row-plant spacing of 20 × 20 cm, with a depth of 20 cm, and apply a handful of dry dung or fire soil ash at the bottom of the hole to cover with fine soil cover fertilizer.

2. The striping propagated in the vigorous growth period from June to July. The 3-year-old 4-year-old plants with strong growth and no diseases and insect pests were selected and bent and pressed into the soil. The vines were cut into the soil with a knife, buried in a depth of 3-4 cm, fixed with branches and forks, and then covered with soil.

3. The seeds are propagated from September to October. After the fruit is ripe, the fruit is cut off, dried in the sun, and rubbed out for storage. Direct seeding or seedling transplanting was carried out in early spring of the following year. The hole was dug according to the row spacing of 20 × 20 cm, the depth of the hole was 2 × 3 cm, and 8 seeds were sown in each hole. After sowing, an appropriate amount of mature compost or soil manure was applied, and the soil was covered flush with the border. Keep the soil moist. When the seedling height is 3-5 cm, leave 2-3 strong seedlings per hole, and the amount of seeds per mu is about 800 grams.

III. Planting techniques

It is appropriate to choose sporadic land before and after the house, or forest edge, gully edge, half-shady and half-sunny hillside for planting, and the soil should be sandy loam rich in humus. 2500 kg of rotten barnyard manure was applied per mu, and an appropriate amount of fire soil ash was added to make the soil loose to facilitate root growth. Make a high or flat bed 1.3 meters wide. The furrow is 40 cm.

From April to May, the seedlings were dug up and left with a stem segment of about 20 cm at the base. 2-3 seedlings were planted in each hole, pressed after planting, poured with light human and animal dung water, and covered with fine soil flush with the border surface.

IV. Field management

1. Weeding by mid-ploughing. After emergence, weeding is carried out by mid-ploughing, and can be stopped after the row is closed.

2. Irrigation and drainage, keep the soil moist and prevent stagnant water in the field after seedling transplanting.

3. Topdressing, Shouwu like fertilizer, topdressing once in early spring in the second year, applying 1000-1500 kg soil fertilizer or compost per mu, ditching, and then covering soil and covering fertilizer.

4. Set up a pillar, the vine of Polygonum multiflorum is long and many. When the height of the seedling is about 10 cm in the second year, a bamboo pole is erected beside the plant to make the vine grow upward, and the basal leaves are removed to facilitate ventilation and light, which is beneficial to increase production.

5. Cultivate the soil around the rhizosphere next to the plant at the end of December every year in order to survive the winter.

Diseases and insect pests and their control

1. Leaf spot. Occurred in summer, high humidity in the field, poor ventilation and light transmission conditions, leaf disease, the emergence of withered disease spots, disease spots ruptured and fell off into holes.

2. For the prevention and control of root rot, the stagnant water in the field should be excluded, and the 500-fold solution of 50% carbendazim should be used to shower the hole; active control of underground pests and nematodes can reduce the incidence of the disease.

3. Aphids harm young shoots and leaves. Timely spraying Nianfeng and other aphid-resistant pesticides.

VI. Harvesting and processing

Polygonum multiflorum was planted 3 or 4 years later, and after the stems and leaves were yellow and withered in autumn and winter, the vines were removed, the roots were carefully dug out, and the soil was shaken off and transported back for processing.

Wash the soil, cut large pieces into thin slices 1.5 cm thick, small ones can not be cut, directly dry or Kang dry.