Dry Pinellia for the Araceae perennial herbs, medicinal underground tubers, also known as Ma Datou, three-step jump, wild taro, with dampness and phlegm, Jiangni vomiting, Xiaoyu Sanjie and other effects, as commonly used Chinese medicine varieties, Pieces The formulation and pharmaceutical industries are in great demand. The supply of wild Pinni summer mainly uses wild resources, but in recent years, with the construction of farmland and the use of herbicides, long-term blind mining has caused wild resources to drastically decrease, leading to tight supply and demand in domestic and foreign markets, and the gap is relatively large. It has been showing steady growth and rising trend and is the main planting variety of Chinese herbal medicine growers. In 2000 and 2003, Taixing Agricultural Research Institute cooperated with Taizhou Huizei Modern Agricultural Development Co., Ltd. to conduct research on high-yield cultivation techniques of Pinellia ternata and achieved certain results. Now its main cultivation techniques are described as follows: 1. The site selection site is suitable for the warm and humid environment. It should be loose, fertile, moist and sandy loam with irrigation and drainage conditions. The pH value of the soil is 5.5-6.8, saline and low-lying land. Viscous heavy soil should not be cultivated. Former crops such as beans, corn, and glutinous rice are suitable, and can be interplanted with corn, wheat, canola or fruit trees. The Pinellia root system is shallow, generally not more than 20 cm, and hi fat, so before planting combined with site preparation, should apply basal fertilizer, per acre applied maturity organic fertilizer or soil miscellaneous fertilizer 2500 ~ 4000 kg, superphosphate 15 ~ 20 kg Basal fertilizer, deep-turn 20 centimeters, finely leveled, made a 1 meter wide rake, the length should not exceed 20 meters, in order to facilitate drainage. 2, sowing production on the use of tubers and bulbs multiplication, but also can be used seedlings nursery or tissue culture method for asexual rapid propagation, tuber propagation and bud propagation, weight gain faster, then can be harvested. The tubers of 0.5-1.5 cm in diameter were selected for the seedlings of the current year, and it is generally appropriate to sow at an average temperature of about 10°C in the spring. In the whole oyster, in the row spacing of 20 cm to open 4 to 5 cm deep ditch, the bottom should be flat, according to the spacing of 4 cm planted stems sowed into the ditch, the top buds up, covering the earth flat, a little repression. When the soil is dry after planting, it must be watered in time. About 60 kg per mu. Harvesting can also be combined with harvesting in the fall, generally from mid-September to mid-October, with the method of spring sowing. 3. Field Management (1) Irrigation and Drainage After sowing, the spring will generally emerge in 20 days. In the event of severe drought, proper watering is required to preserve the seedlings. After the seedlings are controlled, watering is prevented to prevent the growth of the underground part. The dry Banxiaxi is humid and fears of drought. In the event of long-term fine weather and drought, water should be promptly filled. If there is too much rain, drainage should be done. (2) Topdressing, earthing, seedlings, grasses, and grasses shall be given in a timely manner. From late May to late June, the buds grew faster. When the buds grew and began to fall off, 500-1000 kg of fertilizer per mu were mixed with 5 kg of urea and spread in the ditch, and the soil between the rows was cut in half. Summer seedlings, just to cover the buds. After June, the buds on the petiole matured and the seeds matured and fell to the ground with the withering of the plants. Take a ditch fine soil, sprinkle in the noodles, about l. 5 to 2 cm, cover the bulbous buds and seeds, and then use a shovel to make a photo. During the summer and early autumn, the application of rare human waste plus a small amount of superphosphate once. In the middle and middle of September, 10 kg of urea and 20 kg of superphosphate were mixed with the soil and spread evenly over the topsoil to produce earth and grouting, which can significantly increase production. (3) Weeding and weeding. After the seedlings are flushed, the weeds should be removed promptly, with a small bowl and a shallow bowl, and the depth can not exceed 3 cm. Plant grass should be removed by hand. (4) Shading production can be made between maize and legume crops in the middle and late April and the crops will grow or be shaded between the upper and the middle of June. After September, the temperature will gradually decrease and crops should be promptly harvested. . (5) pick buds. In addition to the need for seed propagation, the buds that are extracted during the growing season should be completely removed to reduce the consumption of nutrients and promote the hypertrophy of the underground part. 4, pests and diseases: (1) root rot easily occur in high temperature and humidity. After the onset of the disease, underground tuber rots and the seedlings die. The prevention and treatment methods are mainly to pay attention to drainage, remove diseased plants and use 5% lime water to treat the diseased points or water the roots, and soaking seeds with 0.5%-2% lime water for 12-30 hours during sowing. (2) Leaf spot. When the onset of disease, there are purple-brown lesions on the leaves, and the plants gradually wither. Control methods: spray 1:1:120 Bordeaux mixture or 65% dexamethasone 500 times before and during the onset of infection, and spray once every 7-10 days for 2 or 3 consecutive times. (3) Viral disease. The diseased plant leaves are curled into mosaics, and the plants are short and deformed, mostly occurring in spring and summer. Control methods: remove diseased plants and eliminate the source of infection; (4) Red hawk moth: The larvae damage the leaves and bite them into nick-like or light-eating leaves. Control methods: Insect pests are sprayed with 90% trichlorfon 800 times or captured manually at young age. V. Harvesting and Processing Tuber breeding can be harvested in the same year. The yellowish leaves were harvested in late September, and the tubers were excavated. According to the large, medium, and small grading, the large size was processed into commodities, and the medium and small stalks were planted as seed blocks. The fresh Pinellia which needs to be processed after harvesting must be peeled in time, and it is not easy to peel for a long time. In order to prevent poisoning, the Pinellia ternate should be a large, skin-clean, white-colored, hard-lined, and powder-footed person, and should be strictly protected from dry, dry, and dry hands, feet, and skin. For the purpose of planting, the dry and semi-summer can be stored in winter by sand storage.