Cultivation of Pinellia ternata

1. Growth characteristics: Pinellia ternata prefers warm and humid, half-shaded and half-sunny environment, which is suitable for planting on loose and fertile sandy soil with PH 5.6 ℃ 6.4; Pinellia ternata is afraid of hot and cold, and the suitable temperature for growth is 15 ℃ 25 min, falling seedlings over 26 ℃ and withered seedlings below 13 ℃. Pinellia ternata emerged three times a year, the first from late March to early April, the second in the first and middle of June, and the third in the first and middle of September. The initial stage of bulb germination is early April, the peak is in the middle of April, the mature period is from late April to early May, and each growth period is 50 Murray 60 days. The propagation of Pinellia ternata includes tuber propagation, bulb propagation and seed propagation, but the germination rate of seed propagation is low and the growth period is longer. Tuber propagation is to use the small tuber remaining after screening commercial Pinellia ternata as seed, its advantage is that the growth cycle is short, it is generally planted in spring and can be harvested at the end of summer of that year. Bulbous propagation is the use of bulbous buds for seed, and its quantity is sufficient. Reliable germination and early heat formation are the main propagation methods for the development of Pinellia ternata production.

Second, cultivation techniques

(1) in view of the living habits of Pinellia ternata, which like warmth, fertilizer, moisture, drought, waterlogging and high temperature, land selection and land preparation should choose sandy loam soil with warm and humid conditions, good drainage and irrigation conditions and loose and fertile sandy loam. Last winter, the soil should be deeply frozen to promote soil freeze-thaw and weathering. After the beginning of spring, the land was leveled, applying 3000 kg of soil and miscellaneous fertilizer per mu. 30 kg of superphosphate was used as base fertilizer, ploughed and raked, and made for border to be planted. In addition, continuous cropping should be avoided in Pinellia ternata cultivation. Generally speaking, after planting a season of Pinellia ternata, it is necessary to rotate other crops for at least three years before they can be replanted, otherwise it will lead to year-on-year yield reduction or even no harvest.

(2) sowing at the right time and reasonable close planting of Pinellia ternata can be sown in spring, summer and autumn. Sowing in summer and autumn, because the seed stem overwinters in the field, it is vulnerable to adverse climate and diseases and insect pests, and covers an area of more than half a year; therefore, field production generally adopts the way of spring sowing, which can not only avoid the adverse factors of the previous crop, but also adjust the planting area in time according to the dynamics of market demand in the same year. Spring sowing is generally carried out in the fields that have been ploughed and raked after the soil is thawed in early spring. The row spacing of each plant is about 3 cm, and the sowing depth is about 10.5 cm.