How to cultivate yellow ginseng scientifically

Yellow ginseng has the effect of replenishing qi and blood and nourishing liver and kidney. It is also called Huanghua Poshui Lotus. Summer and autumn harvest roots or stems, leaves, dried, can make yellow ginseng tea, yellow ginseng wine, etc., have a good market value, then how to cultivate yellow ginseng scientifically?

1. Planting time and planting density



Artificially planting belts under natural forests, selecting large trees, weeds, etc., and staying in the forest is more suitable for 0.4~0.7. The planting platform has an opening width of 50~60cm, the length is determined according to the local conditions, the drainage ditch is opened, and the farming road is planned. It can be planted from February to March in spring and from September to October in autumn. It is optimal before and after “Lichun”. When the seedling height is 20~30cm, the transplanting is carried out according to the row spacing of 25cm×25cm, and the 667m2 land needs about 110 seedlings.



2, rational fertilization



In summer and winter, the plant ash or tobacco fertilizer and the decomposed organic fertilizer are applied once; the fertilization method is to cover the soil directly under the canopy dripping line.



3. Water management



Yellow ginseng is a negative plant, afraid of drought and glare, so that dry irrigation, wet energy discharge, watering in summer and autumn or water spray cooling. Other seasons are subject to availability, covering the soil and keeping the soil moist.



4, pruning



According to the purpose of harvesting, if the leaf is mainly used, it can be fixed at 40~50cm from the ground, short branches and long branches, and promote multi-branch; if rooting is the main, it will not be trimmed.



5, disease



The main diseases are root rot and leaf blight. Root rot: Early symptoms are browning, rot, and necrosis of the roots; the base of the petiole is brown, star-shaped rot, sometimes prismatic or elliptical, and finally causes the whole plant to die.



Control method: early removal of the diseased plant, burning, early use of 40% carbendazim 800 times solution for sprinkler irrigation, spray again 7 to 10d, and even spray 2 to 3 times.



Leaf blight: The onset begins to develop from the lower part of the trunk and spreads upward. At the center of the blade, there are round small spots that continue to expand, and finally the leaves wither and the plants die.



Control method: the surface spray was sprayed with 800~1000 times of mancozeb, and sprayed once every 7 days for 2 times.



6, pests



The main pests are termites, aphids and leaf curlers. Termites: In April-May, the main damage to the roots, the use of tobacco bone fertilizer can be applied to cover the earth under the canopy drip line. Aphids: At the end of May and early June, the young leaves are harmed. The control can be sprayed with 2000% of the 40% dimethoate emulsion, sprayed once every 7 days, and sprayed twice. Leaf curler: In May-June, the young leaves are harmed. The chemical control can be killed by 1500mg/kg enemy, 5~7d apart, 2 times in succession. Physical control: Solar insecticidal lamps are installed in the park to kill some adult and reduce the source of insects.



7, harvesting



In the same year, you can harvest fresh leaves, flowers, and vegetables. After 3~5a, harvest roots, stems, leaves, flowers, seeds in summer and autumn, wash, fresh or dried.