The cultivation technology of white fresh skin, how to grow white fresh skin

It likes warm and humid climate, is cold-tolerant, afraid of drought, waterlogging, and strong sunlight. The annual average temperature in Zhejiang production area, the suitable temperature of the aboveground and underground is 12-18; The annual rainfall is 1350-1500mm. The underground tubers are shallow, mostly concentrated in 3-7cm below the soil layer, and each tuber has l-2 buds, and most of them are 3-4.

Planted from early September to early October, young shoots grow from the bud eyes but do not emerge; In early November, when the ground temperature was 5 cm, there were 23-25 hours when the tubers took root from the lower part; The ground temperature begins at 18-20 years of budding, and stretches horizontally into a slender stolon, which is commonly known as a whip; The first stem node is formed in early December, and 2-4 ground stems are born. The stems begin to emerge at 4-5 hours, especially 7-10 hours. In early February, the seedlings and leaves are revealed, and the young leaves are pale red and gradually turn green.

In early March, the underground stems swell at the nodes to form pale yellow smooth tubers. In mid-April, the tubers rotted and shriveled. It is advisable to choose neutral or slightly acidic sandy soil or loam soil with high dryness, sunny terrain, good drainage, rich humus.

Crops such as sweet potato, wheat, rice, corn, beans, atractylodes, and millet were suitable for the previous crops. It can also be rotated with water and drought or with coix. Propagation with tubers. The planting period is from mid to late September to early November, especially from late September to early October.

Select the annual tubers that are oblate and spherical, light yellow in color, have many buds and eyes, are robust and free of disease and insect scars, and have a young and tender transverse diameter for seeding. Before planting, the tubers were soaked in 1000 times of antibacterial special 50% wettable powder for 5min, slightly dried, and then planted. Strip planting or hole planting, it is better to plant strip planting.

According to the row spacing of 20cm, the shallow furrow is opened, the depth of the furrow is 6-7cm, and the tubers are planted in 2 rows. The bud head is upward, and the planting should not be too shallow or too deep, so as not to affect the emergence of seedlings. Cover the soil while planting, and cover it with a layer of grass ash or soil miscellaneous ash.

The amount of seed per 1hm2 is 900-1125kg. The disease has downy mildew, which begins to occur in March, mostly occurs in the leaves, the leaves are initially brown spots, and gradually produce 1 layer of downy mildew on the back of the leaves, so that the leaves die, and can be sprayed with 40% ethylphosphine aluminum wettable powder 200 letter solution, or 50% Ruifuxin 500 times liquid, methyl tobuzin 800 times liquid. Sclerotinia sclerotiorum, onset in mid-March, is the base of the damaged stem, the initial yellow-brown or dark brown water-stained fusiform lesions, when the stem base is rotten, the above-ground parts are lodging and withered, the soil surface can see hyphae and sclerotia, can be used 3% sclerotia or 1:

3. After mixing lime and grass charcoal, withdraw it to the furrow surface, or sprinkle it with 5% ammonium chlorinite powder. Rust, onset in early and mid-March, yellow-green lesions appear in the initial leaves, and then turn yellow-brown, the lesions on the back of the leaves or stems are raised, and rust-colored powder is scattered, which can be sprayed with 500 times of 60% zeb wettable powder, or sprayed with 1000 times of wettable powder with 25% powder. There is also white silk disease.

Insect pests include ground tigers for seedlings and tubers, and mole crickets, beetle larvae, and seed flies.

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1. Selection of seedling land: white fresh skin seedling land should be selected with sufficient sunshine, fertile and loose soil, well-drained sandy loam flat land or gentle slope land, low-lying waterlogging, saline-alkali land or heavy clay land is not suitable, and it is best to have drainage and irrigation conditions.

2. Autumn sowing method: autumn sowing of white fresh skin is carried out from early October to early November, the seeds are mixed with 3 times fine river sand and sown, the amount is about 20 grams of square meters, covered with 1 cm of fine soil, and then covered with pine or larch pine needles about 1 2 cm.

3. Spring sowing method: spring sowing of white fresh skin is carried out from late April to mid-May, the seeds are mixed with 3 times fine river sand and sown, the amount is about 20 grams of square meters, covered with 1 cm of fine soil, and then covered with pine or larch pine needles about 1 2 cm.

<> white fresh skin, alias: white moss bark, eight cattle, mountain peony, sheep fresh grass, is the root bark of the perennial herbaceous plant of the Rutaceae family. It is mainly produced in Liaoning, Hebei, Sichuan, Jiangsu and other places.

In spring and autumn, the roots are dug up, the sediment and coarse bark are removed, the root bark is peeled, sliced, and dried. Raw. It has the effect of clearing away heat and dampness, dispelling wind and detoxifying.

Treatise on medicinal properties: "Cure all hot and poisonous winds, bad winds, wind sores, scabies and red rot, brittle eyebrows, skin and muscles, strong heat and cold; The main solution of heat yellow, wine yellow, acute yellow, grain yellow, labor yellow, etc. "Modern research shows that the volatile oil of this product has anti-cancer effects in vitro.

However, those with spleen and stomach deficiency should use with caution.

The yield of white fresh skin is 3-4 years of artificial cultivation, and the yield of dry products per mu is about 300-500 kg.

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