Cultivation techniques of planting Bupleurum

1. Bupleurum chinense is also known as hard seedling Bupleurum chinense and bamboo leaf Bupleurum chinense, which are Umbelliferae plants. Bupleurum chinense L. is used as a root medicine. It has the functions of regulating menstruation, relieving liver-qi and relieving fever. Distribution in Jilin, Liaoning, Hebei, Shandong and other provinces.

II. Characteristics:

Herbs perennial, 40-90 cm tall. Taproot cylindrical, branched or unbranched, simple alternate, basal leaves and leaves on lower stem with long stipe, leaves and leaves on lower stem with long stipe, leaves linear-broadly lanceolate, entire. Compound umbels. axillary and terminal; flowers small yellow. Double hanging fruit broadly elliptic, ridged, brownish when mature. Flowering 7- 9 months, fruiting 8- 10 months.

III. Growth Habits:

Wild in the drier slopes, forest edges, forest gaps, grass and ditch, etc. The soil is mostly loam, sandy loam or humus soil, with strong cold resistance and drought tolerance, but avoid flooding.

IV. Disarmament techniques:

1. Land selection and preparation: Bupleurum chinense was originally wild, and there were few artificial cultivation. In recent years, introduction and cultivation have gradually expanded in area. It is advisable to select sandy loam or humus soil hillside terrace cultivation, not in the clay ponding section planting. Such as in the newly reclaimed open wasteland sowing, be sure to remove the stones and branches in the field, and should be rotated in advance base fertilizer, generally about 1500 jin per mu of manure, and then carefully level the ground, do the bed ready for sowing.

2. Breeding methods:

Seed propagation, direct seeding or seedling transplanting method, large-scale production more direct seeding. The germination rate of seeds is about 50%, the temperature is about 20℃, there is enough temperature, 7 days after sowing can emerge, if the temperature is lower than 20℃, it takes more than 10 days to emerge. Direct seeding is carried out before freezing in winter or in spring, in April in North China and in the first and middle of May in Northeast China. When sowing, first draw a ditch according to the row spacing of 5--6 inches, the ditch depth is 3--4 minutes, the seeds are evenly scattered into the ditch, the soil is covered for 2--4 minutes, the water is slightly pressed, the sowing amount is about 3 jin per mu, and attention is paid to keeping the soil moist after sowing to facilitate the whole seedling. Seedling: first sunny place or make Yangqi, in early March-late April sowing, row spacing 3 inches, draw a small shallow ditch, seed evenly scattered into the ditch, cover the soil tightly, slightly suppressed, watering with a watering can. Or first to the bed soil of the Yangqi screen on a layer of fine soil cover the surface of the bed. Cover the sowing bed with plastic film or straw curtain. It is beneficial to heat preservation and moisture preservation, and can accelerate seed germination and emergence. Seedlings with soil lumps can be dug up 2 inches high and planted in the field. After planting, they should be watered in time to grow new roots. When the leaves begin to expand, they should be lightly soiled once. The key to creating high households is to do a good job of preserving soil moisture and seedlings.

3. Field management:

Keep the ridge surface wet before emergence, and loosen the soil frequently after emergence. Thinning seedling height 1- 2 inches, when seedling height is more than 3 inches, combine loosening soil and weeding, determine seedling according to plant spacing of 2- 3 inches, when seedling grows to half foot height, topdressing calcium superphosphate 25 jin and ammonium sulfate 15 jin per mu. When weeding or topdressing on pine trees, attention should be paid not to damage stems, so as not to affect yield. In the first year, the stems of newly sown Bupleurum chinense are relatively thin and weak, and should be cultivated before the rainy season to prevent them from falling. In 6- 9 with trichlorfon (800 times liquid) or green worm bacteria (10 billion spores per gram) to prevent yellow butterfly and red bar.

4, harvest processing: two years after sowing growth can be dug. Harvest in autumn when plants begin to wither or spring before new shoots appear. After digging, remove residual stems, shake off soil, dry or cut into sections and dry for later use.