Efficacy and planting methods of Polygonatum odoratum

Polygonatum odoratum is a plant of Liliaceae. Long cylindrical, slightly flattened, rarely branched, surface yellowish white or yellowish brown, translucent, longitudinally wrinkled and slightly raised, with white dot-shaped fibrous root scars and disk-shaped stem scars. The quality is hard and brittle or slightly soft, easy to break, and the cross section is horny or granular. The breath is slight, the taste is sweet, chewing is sticky. It is mainly used to nourish yin, moisten dryness, invigorate body and quench thirst. For lung and stomach yin injury, hyperglycemia, dry cough, dry pharynx and thirst, internal heat to eliminate thirst.

Efficacy of Polygonatum odoratum

Nourish yin and moisten the lungs; nourish the stomach and nourish fluid. Dry cough; fatigue cough; pharynx dryness and thirst caused by consumption of yin fluid; internal heat and relieving thirst; external sensation of yin deficiency; dizziness; muscle and pulse contracture pain.

Polygonatum odoratum action

1. Polygonatum odoratum is sweet and greasy, soft and moist, which is a good medicine for nourishing yin and promoting fluid. The vitamin A contained in Polygonatum odoratum can improve the condition of dry, cracked and rough skin and make it soft and lubricated. Play the role of beauty and skin care.

2. The steroidal glycosides contained in Polygonatum odoratum have similar effects on myocardium as Lilia lanceolata preparation. Polygonatum odoratum has a cardiotonic effect on the isolated frog heart, and the effect of Polygonatum odoratum decoction is similar to that of Polygonatum odoratum.

3. Intraperitoneal injection of Polygonatum odoratum extract can enhance the phagocytosis of peritoneal macrophages, increase the level of serum hemolysin antibody and improve the proliferation of spleen lymphocytes to ConA in burned mice.

Polygonatum odoratum planting

[land selection]

The hilly land with low soil, air and water pollution, 100Mel 1200 meters above sea level, slope less than 25 degrees, deep soil layer, loose fertile soil, good drainage, neutral or slightly acidic soil was selected as the planting land of Polygonatum odoratum. Polygonatum odoratum should not be continuous cropping, otherwise there will be an increase in diseases and insect pests, a decline in yield and other phenomena, so continuous cropping must be avoided.

[seedling selection]

Select a robust, non-pest, non-traumatic high-quality Polygonatum odoratum variety pig shit tail.

[soil preparation and fertilization]

For the selected land, 150 kg / mu of quicklime and 200 g / mu of insecticide were applied after the previous crop harvest, and immediately ploughed (depth about 30 cm), weeding, exposure to the soil (this is very important, it is one of the keys to ensure the high yield of Polygonatum odoratum). Before planting, the soil was broken, ditched separately (box width 1, 5 Mel 2 meters), leveled and fined, applied sufficient basic fertilizer, and applied 2500 kg of pig and cow manure per mu.

[seed]

The seedlings with no damage to the tooth head and strong seedlings were selected and planted on a sunny day or a sunny day after rain and when the dry humidity was suitable from July 25 to August 25 every year. Before planting, methyl topiramate and other drugs should be used for sterilization and disinfection (according to the normal concentration of water, soaking for 2-5 minutes), reasonable seed arrangement (oblique arrangement and arrangement, most of which are oblique arrangement. In the oblique arrangement system, the end of the stem with the terminal bud is facing up, the tail is downward, and it is arranged into the sowing ditch at a certain angle from the ground, with a density of 30cmX8.3cm and a depth of 6cm.

[overwrite]

Polygonatum odoratum must be covered with straw, corn stalk or thatch immediately after planting, with a thickness of 6ml / 7cm and a thin layer of soil on this layer of grass.

[fertilization]

Fertilizer and water are very important to the yield of Polygonatum odoratum, the more the better, especially potash fertilizer, but too much nitrogen fertilizer will make its stems and leaves too tender and prone to diseases and insect pests. During the whole production period, it is necessary to apply fertilizer at least twice in two years: once, when planting, 1500kg / mu of human and animal manure is applied to the middle layer of the seedling and the covered rice straw layer (fertilizer and seedling are separated from thin soil to avoid burning the seedlings, and 50kg / mu of compound fertilizer is applied if necessary). In the other time, after withered seedlings from August to September of the following year, the withered seedlings were cut down and weeds were removed, and then 1000-1500 kg / mu of pig and cow manure was applied and covered with rice straw and new grass. When there are conditions or the land is too thin, farm manure or compound fertilizer can be applied after Ching Ming Festival seedlings come out 5 centimeters every year. At the same time, clear the trench and drain to prevent retting roots.

[weeding]

It can be carried out all the year round, and we should adhere to the principle of "except the early, the small and the small". The combination of artificial weeding and the application of special herbicides for Polygonatum odoratum can be used to control weeds, but artificial weeding should not be done with a hoe and should be pulled out by hand so as not to hurt the seedlings and die. At the same time, we should strictly prevent people and animals from entering, so as not to trample on the tender seedlings. Every year, before the new seedlings of Ching Ming Festival were unearthed, herbicides were used to weed the seedbeds and gullies thoroughly, and only glyphosate or special herbicides were used after the seedlings were grown.

[flood prevention and drought prevention]

Polygonatum odoratum is basically not resistant to drought in Yuanyuan County, but it is especially afraid of waterlogging, especially those planted in the fields. Once waterlogged, it is easy to appear leaf yellow, inverted plants, rotten roots, yield decline, or even the whole plant, the whole piece of death, resulting in no harvest.

[pest control]

Polygonatum odoratum is basically free of diseases and insect pests, and there is little harm to insects, as long as it is used to completely kill ground insects when planting, and black light can also be used to trap and kill pests. The main diseases are brown spot, brown rot, etc., the key is to do well; first, the seedlings should be selected carefully when planting, the seeds should be purchased from areas with few disease sources, the diseased and rotten seedlings should be removed, and the time of soaking seeds and the concentration of medicine should be ensured. Second, adhere to the principle of giving priority to prevention, every year after the emergence of new seedlings with methyl topiramate and other drugs spraying for prevention, once found that yellow leaves, rolled leaves are serious, immediately use methyl topiramate spraying.