Growth environment and conditions of Polygonatum sibiricum
Polygonatum likes temperature, cold, drought, high temperature, shade and waterlogging. It is not resistant to strong light and frost, and needs high air humidity and concealment during growth. It grows well in areas with concentrated rainfall, and often grows in shrubs, forest edges, ditches and shady slopes at an altitude of 700 ~ 3600 meters.
Polygonatum has many varieties. For example, Polygonatum sibiricum is mainly produced in Shaanxi, Ningxia and Gansu, Polygonatum multiflorum is mainly produced in Jiangsu, Anhui, Guangxi and Guangdong, and Polygonatum yunnanense is mainly produced in Guizhou and Yunnan.
Growth environment of Polygonatum sibiricum
Huang Jingxi likes humid environment and has the characteristics of shade, cold resistance and drought tolerance. It does not grow well in dry areas and grows well in humid and semi-cloudy environments. Suitable for planting in deep, loose and fertile soil with good drainage, not suitable for planting in barren, dry and sticky plots.
Yellow growth temperature
Huang Jing likes cool environment, and the suitable growth temperature is between 15-24℃. Once the temperature exceeds 27℃, its growth will be inhibited, while when the temperature exceeds 32℃, the aboveground parts will easily die and the roots will shrink and dry up.
Growth process of Polygonatum sibiricum
1. vegetative growth period: after Polygonatum sibiricum is planted, the terminal bud begins to sprout and emerge, and the first bud appears in April-May, which is called Polygonatum sibiricum vegetative growth period.
2. Vegetative growth and reproductive growth: from the appearance of the first bud in late April to the opening of the last leaf at the top in June, this process is called the synchronous period of vegetative growth and reproductive growth of Polygonatum sibiricum. At this time, the growth is vigorous and the demand for nutrients is large, so nitrogen fertilizer and potassium fertilizer should be applied appropriately.
3. Reproductive growth period: The period from the last leaf at the top of June to the end of June165438+1October is called reproductive growth period, and the flowering period is also a transitional period, and the fruiting period and withering period are partially overlapped and staggered.
4. Transition period: from the end of 1 1 to the next year's harvest, it is called transition period. During this period, the underground rhizome of Polygonatum sibiricum needs to complete the accumulation and transformation of effective components, which plays an important role in the quality of Polygonatum sibiricum.
Planting time and method of Polygonatum sibiricum
1, Polygonatum sibiricum is mainly planted in March-April in spring and 9- 10 in autumn. The best time is in spring, when the temperature rises, it has strong germination and growth ability, easy cultivation and fast growth speed. Planting in autumn needs to take care of one more winter, which will inhibit growth and make maintenance difficult, so it is best to plant in spring.
2. Choose sunny, fertile, well-structured land that will not accumulate water, renovate the soil in advance to a depth of about 30 cm, apply sufficient base fertilizer, and maintain a reasonable planting density. Plant spacing15cm, row spacing10cm and depth 5cm. After sowing, cover the soil and compact it, then water it, and the seeds will be washed away directly.