Windproof, alias North Windproof, Guanfeng (Northeast), Zheligen (Inner Mongolia). It is a perennial herb growing 30–80 cm tall.
The windbreaker stem is solitary, with more branches from the base, rising obliquely, nearly equal length to the main stem, with fine edges, basal leaves, flattened petioles, and wide leaf sheaths at the base. The leaves are ovate or oblong, 14–35 cm long, 6–8 (-18) cm wide, quadratic or nearly triple pinnate split, first lobe ovate or oblong, stalked, 5–8 cm long, short stalk in the lower part of the second splinter, narrow wedge-shaped terminal lobe, 2.5–5 cm long and 1–2.5 cm wide. Parsnip stem leaves are similar to basal leaves, but smaller, with simplified apical leaves and wide leaf sheaths.
Most of the compound umbel-shaped inflorescences, borne on stems and branches, the apical inflorescence peduncle is 2–5 cm long; the umbelis is 5–7, 3–5 cm long, glabrous; the small umbel inflorescence has flowers 4-10; no total bracts; small total bracts 4–6, linear or lanceolate, apically long, about 3 mm long, short triangular sepals; petals inverted ovate, white, about 1.5 mm long, glabrous, slightly concave at the apex, with a small tongue with internal folds.
The windproof double cantilever is narrow or oval, 4–5 mm long and 2–3 mm wide, with warty protrusions at a young age that smooths out as ripe; there is usually a tubing 1 in each groove, 2 tubing on the syncytial surface, and a flat ventral surface of the endosperm.
The roots are stout, slender cylindrical, divergent, pale yellowish brown. The root head is covered with fibrous leaf residues and distinct rings.
E windproof and cold-resistant, drought-tolerant, avoid excessive humidity and rain and flooding, windproof soil requirements are not very strict, but should choose high and dry sunny land, the soil is loose, fertile, deep soil layer, well-drained sandy loam soil is the most suitable. Clay, waterlogged, acidic or heavily saline land should not be planted.
Windproof autumn sowing and spring sowing are available. Autumn sowing in northern China is more than before the late autumn freeze, autumn sowing should use dried seeds, spring seedlings, seedlings, high emergence rate, solid root texture, powdery foot, good quality. Spring sowing should be done in mid-to-late May, when the ground temperature reaches above 15 °C. The germination rate of spring sowing is low, and the seeds are soaked in warm water at 35 °C for 24 hours before sowing, and then dried the outer skin before sowing. When sowing seeds, in the prepared bed, according to the row spacing of 20 cm, open a shallow ditch with a depth of 3-5 cm, cover the soil with 1-1.5 cm, and slightly suppress.
Windproof seedlings can be sown in spring or autumn, in the whole seedbed according to the row spacing of 10-15 cm horizontal furrow trench, 5 cm deep, the seeds are evenly sprinkled in the ditch, covered with 2 cm, slightly suppressed, mu sowing amount of 6-8 kg. Cover the furrow with heat preservation and moisturization, watering, and seedlings can emerge 20-25 days after sowing. In the event of spring drought after sowing, watering should be carried out in time to make the soil moisture content reach 40% to facilitate the emergence of seedlings. After emergence, weeding and loosening the soil 3 times in a row so that there are no weeds on the furrow surface. When the seedlings are 8 cm tall, the fertilizer is applied 1000 kg and the calcium superphosphate is 15 kg.
When harvesting the windproof seeds in autumn or early spring, select roots with a thickness of more than 0.7 cm, cut them into small sections of 3-5 cm long, dig holes planted according to row spacing of 50 × 15 cm, the hole depth is 6-8 cm, each hole is planted into a root segment, can not be upside down, and then cover the soil with 3 cm. About 50 kg of seed roots are used per acre. It can also be planted in late autumn at a row spacing of 10×3 cm, and then colonized when the upper part of the root segment grows adventitious buds or grows 1-2 leaves in the spring of the following day.
Windproof Before June, weeding needs to be carried out several times to keep the field clean. When the plant is sealed, the old leaves are removed first, and then the roots are cultivated to prevent lodging; in the winter, the site is cleaned up and the soil is cultivated again to facilitate the overwintering of the roots.
When the height of the windproof seedlings is 5 cm, the seedlings are between 10 cm according to the plant spacing, and when the seedling height is 10-13 cm, the seedlings are fixed according to the plant spacing of 30 cm. Transplant and replenish seedlings in the missing parts. It is necessary to bring soil to transplant and water in time after planting to facilitate survival. When the base is fat and grows strongly, the first year can not be fattened. Rotting cake fertilizer or urea can be applied on acres before the ridges are sealed. When returning to youth in the second year, people are applied to feces and urine per mu, or ammonium sulfate is applied per mu. After sowing to emerge, the soil should be kept moist to prevent the soil surface from compacting and affecting the emergence of seedlings. In the rainy season, attention should be paid to timely drainage and flood prevention to avoid rotten roots and dead seedlings. For plants that are more than two years old, when they flower in June and July, in addition to leaving seeds, they should be removed in time when they are found.
Windproof winter harvests are harvested in late October to mid-November or in the spring before budding. Windproofs propagated from seeds can be harvested the following year. In the spring, the windproof of root propagation can be harvested in the same year when the root length is 30 cm and the thickness is more than 1.5 cm under the condition of sufficient water and fertilizer and lush growth. Autumn sowing is harvested in October-November of the following year. At the time of harvest, a deep trench should be opened from the end of the furrow, excavated sequentially, and the residual stem and soil should be removed after the roots were dug out. Root and whole herbs into the medicine.
In the form of a parsnip, the roots are oblong-conical or oblong-cylindrical, tapering at the lower part, some slightly curved, 15-30 cm long and 0.5-2 cm in diameter. The surface is grayish brown and rough, with longitudinal wrinkles, mostly transverse skin holes, and fine root marks with punctate protrusions. The root head has a distinctly dense ring, some parts have a distinctly dense ring, and some have a tan hairy leaf base on the five stripes. Light body, loose, easy to break, uneven section, light brown skin, cracks, scattered yellow-brown oil spots, light yellow wood. The gas is peculiar and the taste is slightly sweet.
Windproof is mainly produced in Heilongjiang, Liaoning, Inner Mongolia, Hebei, Gansu, Shaanxi, Shanxi, Shandong and other provinces and regions. It grows on grasslands, hills, gravel slopes, and is cultivated.
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