? Vitex negundo was born in sunny or semi-cloudy and semi-sunny hillside bushes. It has strong cold tolerance and likes warm and humid climate. The soil with deep soil layer, fertile and loose soil and good drainage and water retention performance is better. Polygonatum sibiricum seedlings can overwinter in the open field and are not drought-tolerant.
? According to the growth characteristics of Polygonatum sibiricum in Northeast China and the requirements of environmental conditions, the cultivation site should choose soil with warm climate, suitable light, fertile soil, slightly thick soil layer and high humus content. Low-lying and waterlogged areas, heavy clay and saline-alkali land are not suitable for planting. In mountainous areas, we can use the hillside wasteland on the east and west slopes, or use plots with suitable shading conditions among young trees in orchards for cultivation.
? It is said that the cattle planted by Polygonatum sibiricum is one of the drug kings in Northeast China, such as Xu et al., and more than ten kinds of wild medicinal materials such as Gentiana, Polygonatum odoratum, Rhizoma Atractylodis, Cortex Dictamni Radicis, Radix Clematidis, Ligusticum liaotungensis and Polygonatum sibiricum have been successfully planted.
? The drug king in Northeast China made his fortune mainly by medicinal materials, and he has a deep understanding of the income gap between planting medicinal materials and ordinary crops. For other villagers, the annual income of planting an acre of corn is at best 1000 yuan, and the income of planting medicinal materials is 5000 yuan per acre. what do you think? You choose.
What are the meticulous techniques in the process of planting? Let's hear what the drug king has to say.
(1) How to plant it is the key.
How to reproduce, there are the following ways for reference, mainly rhizome reproduction, seed reproduction and seedling transplantation.
Rhizome propagation:
? Around the end of March in late autumn or early spring, dig underground rhizomes, select the tender part at the top, cut into several sections, each section has 3 or 4 sections, slightly dry the wound, and plant the whole border according to the row spacing of 22 ~ 26 cm, the plant spacing of 10 ~ 16 cm and the depth of 5 cm. After planting, cover the soil for 3 ~ 5 cm, slightly suppress it and water it. After that, water every 3 ~ 5 days 1 time to keep the soil moist. If planted in late autumn, some livestock manure or manure should be covered after freezing to keep warm and survive the winter; After thawing in the second year, the dung blocks are broken and leveled, and the soil is kept moist before emergence.
Seed propagation:
? Immediately after the seeds mature in August, sand storage treatment is carried out: 1 part of seeds and 3 parts of sand are evenly mixed and stored on a kang 30cm in the shade to keep it moist. When the seeds were screened out at the end of March of the following year, they were evenly scattered in the shallow ditch at the border according to the row spacing of 12 ~ 15 cm, covered with soil about 1.5 cm, watered slightly, and covered with a layer of grass. Remove the mulch before emergence. When the seedling height is 6 ~ 9 cm, it can be properly thinned in the over-dense place and transplanted after 1 year. In order to meet the growth habit of Polygonatum sibiricum in the shade, corn can be planted on the ridge.
Seedling transplantation:
? Generally, the transplanting time in northern China is mostly in early April. On the whole planting plot, the row spacing is 30 cm? rice. Plant spacing 15%? Rice digging hole, hole depth 15 cm? Rice, the bottom of the hole is dug loose and leveled, and the base fertilizer is 3000 kg/mu. Then that cultivate seedlings are plan into holes. 2 plants per hole, covered with soil and compacted. Water it once. Seal the hole again to ensure the survival rate.
(2) During the growing period, pest control is the key.
Common diseases of Polygonatum sibiricum include leaf spot and black spot. Common pests are grubs, aphids, red spiders and so on. ?
? Diseases are all fungal diseases, which are harmful to leaves. Its pathogen can overwinter in soil and disease body, and invade and infect when the temperature rises. At the beginning of the disease, irregular yellow-brown spots began to appear on the tip of the blade, and the edges of the spots were purple. With the development of the disease, the spots spread and spread, and finally the whole leaf withered, and the disease became more serious in rainy season.
? The reasons are all caused by high environmental humidity. My advice to you is to increase photosynthesis, speed up the efficiency of photosynthesis, accelerate the evaporation of water vapor around Polygonatum, and enhance the disease resistance.
? When the outside weather is bad, artificial laser plant light supplement technology can be used. A laser plant fill light lamp is 2 mu of land in the open air, which can fill light for 8 hours every day.
For more technical consultation, you can pay attention to Xiaomakan agriculture.