Artificial cultivation techniques of Pinellia ternata

The choice of planting land dry Pinellia ternata prefers mild and humid climate, cold and shade tolerance, suitable for hillside and flat land cultivation. It can be interplanted with fruit trees, or intercropped with tall plants such as corn, rape, wheat and so on. It is best to plant in sandy soil, heavy clay and low-lying waterlogged plots are not suitable for planting.

Planting dry Pinellia ternata takes November in winter to April of the following spring as the suitable sowing period. before sowing, 2000 kg of barnyard manure or compost and 25 kg of superphosphate are applied every 667m2, and turned into the soil as base fertilizer, ploughed again when sowing, and then raked flat to make the border. Pinellia ternata is mainly propagated by tubers and main buds. It is best to use tubers to reproduce and plant along with digging, digging holes according to row spacing of 17 cm and plant spacing of 7 cm, planting 2-3 tubers per hole, using 40-50 kg tubers per 667 square meters, covering the soil should not be too thick, 1-2 cm should be watered in time if the soil is dry as early as possible. When the old leaves are about to wither and the plant buds under the petiole have matured in summer and autumn, the mature plant buds should be planted in strips, and the propagation of tubers between rows should be the same.

Field management

(1) weeding. Before the seedlings are closed, weeding should be done in time, and the depth of intertillage should not exceed 5 cm, so as to avoid root damage. Because the root of early Pinellia ternata grows around the tuber, and the root system is concentrated in the topsoil layer of 12cm to 15cm, the middle ploughing should be shallow rather than deep.

(2) fertilization. After seedling emergence, 1000 kg of human and animal dung water of 1 ∶ 3 was applied every 667m2, and 2000 kg of human and animal manure was applied every 667m2 during plant bud formation. When the new buds appeared in the seed Pinellia ternata and the new roots grew again after shelling in the mother Pinellia ternata, it was poured with 1 ∶ 10 dung water. After that, 25 kg of rotten tillage fertilizer, 20 kg of calcium superphosphate and 10 kg of urea were applied every 667 square meters according to the growth situation.

(3) pest control. Leaf spot disease and virus disease are more likely to occur in Pinellia ternata. The control of leaf spot disease can be sprayed with 1 ∶ 1 ∶ 120 Bordeaux solution or 65% Dysen zinc 500 times solution, once every 7 to 10 days, 2 times in a row. To prevent and cure virus diseases, 5% lime milk can be used to irrigate the diseased plants in time and burn them centrally. The pest is mainly red diamondback moth, and the control method is to spray 80-1000 times of trichlorfon, once every 5-7 days, 2-3 times in a row.

The growth period of harvesting and processing Pinellia ternata is 180,210 days, and tuber propagation can be harvested in the same year or the next year according to different sowing seasons. Generally in summer and autumn stems and leaves withered after digging, choose a sunny day to carefully dig tubers to avoid damage, shake off the sediment, put into the basket to cover. Do not expose yourself to the sun, or it will not be easy to peel. When processing, the fresh Pinellia ternata is graded according to large, medium and small, and then put into a gunny bag, gently beat on the ground, then poured into a clear water tank and rubbed repeatedly until the skin is clean, and then take out to dry.