Pinellia is a perennial herb of the Araceae family, and is also known as the Banyan, Sanxingcao, and the three leaves. Sexual, warm and toxic. Dry dampness and phlegm, and stomach and spleen, Jiangni vomiting effect. Indications dampness drink, chest fullness, headache and insomnia. This medicine is distributed in Tianshui, Weinan, Pingliang and other places in our province. Now its high yield cultivation techniques are described as follows: 1 Morphological characteristics of perennial herbs, underground tuber bulbs forming a flat spherical, diameter of 1-2 cm, the lower students produce most fibrous roots. The 1-year-old leaves are single-leaved. The 2-3-year-old leaves are deeply split into three small lobes. The petiole is 6-10 cm in length. The inflorescence of the panicle is topped. The lower part of the fulgurus is green, and the inside is dark purple and is tubular and does not open. The upper piece. Berries green. Flowering from June to August, fruiting from August to September. 2 Growth habits Pinellia is wild in the hillside, wet and dry grass, Linxia and Tianshi. Hi cool and humid climate, drought-tolerant, salt-tolerant, fear of stagnant water. Deep in soil, loose structure, good drainage and air permeability, and good growth in soil rich in organic matter. 3 Propagation methods Tuber propagation is broadcast live in late August and early September. Apply basal fertilizer before sowing, apply 1500-2000 kg of high quality manure per acre, and level up and make rakes. Ditch 15-15 centimeters in depth and 12-15 centimeters deep. Spread the tubers evenly into the furrows at a distance of 5-6 centimeters and cover the soil. 200-250 kg (fresh weight) per acre, 15-20 days emergence, seedling height 10-25 cm. 4 Field Management 4.1 Weeding: Combine loose soil after emergence to remove field weeds at any time. 4.2 Top-dressing: top-dressing high-quality farmyard fertilizers in the middle of growth, with 1000-1200 kg of fertilizer per acre, combined with a small amount of phosphorus and potassium fertilizers. 4.3 Watering: Watering 1-2 times when the drought is severe. It is appropriate to infiltrate the soil layer by 10 cm each time. After irrigation, loosen the soil and eliminate soil compaction. 4.4 Disease Prevention and Treatment: Pinellia spp. disease is mainly caused by leukoplakia and may occur in April-May. In the early stage of disease, 50% thiophanate-methyl WP may be sprayed with 500 times or 50% carbendazim WP may be 500-1000 times or 50 times. % of TU wettable powder 500 times, spraying once every 7-10 days, spray 2-3 times. 5 Collect and process medicinal tubers. The harvest can be harvested in the summer and the second quarter. When harvesting, it is screened, and the large tubers are washed in the soil. Except for the skin and fibrous roots, they are dried or dried under the hot sun and used for medicinal purposes after the system is manufactured. Tubers can be left as seeds. 6 Precautions 6.1 Prevent trampling of livestock and livestock during seedling period. 6.2 Cannot be repeated.
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