Relationship between Stems Size and Cultivation Depth of Pinellia ternata

Relationship between seed stem size and cultivation depth of Pinellia ternata

(Li Hongjun, Runkang Institute of traditional Chinese Medicine, Heze City, Shandong Province)

Objective: the artificial cultivation of Pinellia ternata is generally propagated by seed stem. If the cultivation of the seed stem is too deep, one is to affect the emergence of seedlings, and the other is the later growth stage, because the humidity is too high, it is easy to cause the seed stem to rot. If the cultivation of seed stem is too shallow, it will be affected by the change of air humidity and temperature. at the same time, odd-shaped commodities with many bud heads will appear in Pinellia ternata, which will seriously affect the yield and quality.

Key words: soil cultivation depth of seed stem of Pinellia ternata

In the process of artificial planting of Pinellia ternata, in order to form the first generation of beads in the soil, reduce the labor of soil cultivation operation, and at the same time make the individual of Pinellia ternata commodity pure and less multi-bud phenomenon, Pinellia ternata can not only emerge smoothly, but also maximize the absorption of deep soil water and organic matter, and avoid a large amount of decay of tubers in the later stage of growth. therefore, when cultivating Pinellia ternata, according to the size of the tuber. Reasonable selection of planting depth is one of the key techniques for artificial cultivation of Pinellia ternata with high yield, stable yield and high quality.

According to the biological characteristics of Pinellia ternata, combined with the research results in recent years, the height of bulblets formed on the leaf stem of Pinellia ternata is 2.6 times higher than that of Pinellia ternata seed stem, and the optimum sowing depth of seed stem of different size can be obtained, which should not be too shallow or too deep. If the sowing is too shallow, it is easy to form a multi-bud head conjoined tuber commodity, and the plant is not tolerant to drought and is greatly affected by external temperature and humidity. If the sowing is too deep, it is difficult to emerge, and in the later growth stage, the deep soil moisture will be too large, resulting in a large number of tubers rotting.

Before sowing Pinellia ternata, the seed stem is generally divided into three grades: large, medium, small, medium and small, referred to as grading. Those with a diameter of more than 2.5 cm are first-class species, accounting for about 10% of the president's seed volume; those with a stem diameter of 1.5 cm are secondary species, accounting for about 50% of the total species; and those with a stem diameter of less than 1.5 cm are third-class species, accounting for about 40% of the total. The optimum sowing depth of the primary seed stem is 7 Mel 8 cm, the deepest is no more than 9 cm, the optimum sowing depth of the secondary seed stem is 5 mi 6 cm, the deepest is no more than 7 cm, and the optimum sowing depth of the third seed stem is 3 Mel 4 cm, the deepest is not more than 5 cm.

Li Hongjun, Runkang Institute of traditional Chinese Medicine, Heze City, Shandong Province

Add: 129mudan north road, Heze city, Shandong province zip code: 274000

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