Northeast Tiannan Star is also called Tiannanxing, Tianxingxing, and Shanjimi. You may not know about it, but you should have heard of the products made from it, such as Tiannanxing, Nanxing, and Nanxing. The northeastern Tiannanxing has the effect of removing phlegm, dissolving phlegm, and detoxifying medical sores. The following Hui Nongwang Xiaobian will tell you about the biological characteristics and cultivation management techniques of the medicinal plant northeastern Tiannanxing.

药用植物东北天南星

1 Botanical characteristics

The northeastern star is a perennial herb with a plant height of 30 to 60 cm. The tuber is nearly spherical or oblate, with a diameter of 3 cm, and the fibrous roots extend radially. 1 leaf with long handle. Leaflet 5 (only 3 small leaves of young plants), the shape changes greatly, the leaflets are obovate or broadly obovate, apex acute, base cuneate, entire, glabrous, 7-7 cm long, 5-11 cm wide. Meat spikes, female and male. The tidbits are drawn between the sheaths and sheaths, and the upper ends of the meat cobs are stick-shaped and have flames. The lower part of the flame is cylindrical, with a flat edge, green or purple, white stripes, 7 to 11 cm in length, and 4 to 6 cm in length. The upper part is upright or slightly inclined, and the tip is short and sharp. Male flowers have 4 to 6 anthers, connate, filaments very short, anther perforation cracking. The inflorescence is elliptical, up to 5 cm long and red when the berries are ripe. Flowering period from June to July, fruiting period from July to August.

2 Biological characteristics

The northeastern Tiannanxing enjoys a warm and humid climate, and it is better to cultivate it in moist, loose, and humus-rich loam or sandy soil. Afraid of drought, not glare, tuber is not resistant to freezing. Wild in the forests and forest glades, forest margins and forests, gullies and mountain creeks are more humid, especially in the lower part of the Yinshan slope or the semi-yin and half-yang slopes and the mountain valleys, there are many growth, sunny slopes There is little growth in the arid and water. More at an altitude of 300 to 1200m.

3 cultivation management

3. 1 Land selection and site preparation

The environmental factors such as atmosphere, water quality and soil are selected to meet the requirements of GB5618-1995, Soil Environmental Quality Standard, GB5084-92, Farmland Irrigation Water Quality Standard, and GB3095-1996, Ambient Air Quality Standard. The planting area should be selected from sandy loam with good drainage, fertile soil and deep soil. Avoid cultivation in areas where the soil is sticky, thin, low-lying, and easy to accumulate. In the mountainous areas, you can use the shady valleys between the valleys, the streams, or the sparse forests.

After the land is selected, the organic fertilizer is first applied as the base fertilizer. The application amount per acre (667m 2 , the same below) is 3000kg, evenly spread into the ground, and the soil is turned deep by 30cm, and the weeds and grass roots are removed to expose the sun. The top of the seed is flattened and thinned, and the ridge is made flat, and the width is 1.2 m, the distance between the crotch is 30 cm, and the height is 13 cm.畦 Long-term terrain and convenient operation.

药用植物东北天南星

3. 2 reproduction

Northeastern Tianxingxing breeds with tubers and seeds.

3. 2. 1 Tuber propagation is propagated by tubers. Because of its heritability and stable seed reproduction, it can ensure high yield and short growth cycle. This method is used in production. When digging tubers in autumn, select the same tuber, dig a 40~50cm deep pit in the sunny place, and store it in layers with fine sand to prevent cold. In the middle of April of the next year, take out the plant, the row spacing is 15 ~ 20cm, the depth is 5cm. The soil is dry and water is poured. One tuber is placed in each hole, the bud head is upward, and the 4cm thick fine soil is covered. Then cover the pine needles or grass to moisturize and emerge in about 15 days. About 30kg of tubers per acre.

3. 2. 2 Seed Propagation Northeastern Tiannanxing seeds have no dormancy characteristics and are short-lived seeds. They should be followed by sowing or sowing in the spring. When the dried seeds are stored at room temperature for one year, they all lose their germination power, and they cannot be used in the next year. From the end of April to the beginning of May, on the well-made rafts, the horizontal spacing of the rafts was 15cm, and the ditch depth was 3cm. The seeds were evenly spread in the ditch, and the covering soil was flush with the kneading surface, slightly suppressed and watered. After the second year of sowing, it was transplanted to Putian in the second half of April, and it was planted with the digging method.

3. 3 Field management

3. 3. 1 Seedling management After sowing, before seeding, it is necessary to check the change of the covering of the kneading surface frequently, and find that the cover is not covered in time to keep the soil moist. It was found that the drought was watered in time and the drainage work was done during the rainy season. Remove the cover in time when the seedling is emerged, so as to avoid damage to the seedling when the cover is removed after emergence. When the seedling height is 6cm, the seedlings are fixed at a plant spacing of 12cm. The seedlings are replanted, and the excess seedlings can be transplanted separately. Weeding work should be done during seedling growth.

3. 3. 2 Field management Tiannan Xingxi wet, we must always keep the soil moist, can be corn or other high-stalk medicinal materials on the raft on the plant spacing 30cm, which can not only shade the northeast Tiannan star, create a humid environment, but also increase economic benefits. Water is sprayed in time when the soil is dry, and drainage and flood control work is done during the rainy season. After the emergence of the seedlings, the weeds in the field should be removed in time. The first weeding should be removed by hand or shallow, so as not to damage the shoots. After the seedlings are planted, the roots of the seedlings should be expanded to avoid the roots. During the growth period, combined with weeding loose soil, chasing the rotted people, livestock manure water, 1500kg per acre, appropriate application of phosphorus, potassium fertilizer. In order to improve tuber yield and active constituents, when the spikes of Tiannanxing meat are extracted from the sheath-like sepals from June to July, they should be cut off in time to reduce nutrient consumption and facilitate bulb growth.

4 Pest control

4. 1 Northeastern southern star brown spot disease

In the damage of the leaves, brown lesions are produced on the susceptible leaves, and the central part is light in color. The late stage lesions are gray-black moldy, which often causes early leaves to dry. The pathogen is C. sinensis, which is a fungus of the genus Aspergillus. The pathogens are overwintered by conidia and mycelium on the dead leaves and in the soil in the field. Conidia are produced in early May, and the disease occurs from July to August, and infection can be infected until harvest. Excessive application of nitrogen fertilizer, excessive plant density, and excessive humidity in the field are prone to this disease.

药用植物东北天南星

The control method is to completely clean up the pasture after the plants have withered, and to concentrate or burn the diseased plant residues. Do a good job in field hygiene, implement formula fertilization, and enhance the disease resistance of plants. After emergence, use 70% mancozeb 800 times solution, 70% methyl thiophanate 800 times solution, 50% milicide 600 times solution, etc., and spray a total of 3 times.

4. 2 Northeast Tiannan Star Rust

The blade has a round or irregular shape with a diameter of 1 to 10 mm, yellow, and a yellow ring-shaped small particle on the back surface, that is, a pathogen rust cavity. The pathogen is a bacterium of the genus Basidiomycetes, which is not completely rust fungus. The rust chamber has a coating, a spore beaded pattern, and a rust chamber cup. Only the rust cavity is formed on the leaves of the northeastern star, and rust spores are produced. It occurred in May and was severe from June to July. The prevention method is to select disease-free bulbs for seed use. In the early stage of the disease, 15% of the powder rusting 800 times solution was sprayed, and it was sprayed once a week for 3 times.

4. 3 pests

Northeast Tiannanxing is poisonous and basically has no pests.

5 harvesting

At the end of autumn, after the upper part of the area is withered, the soil is harvested when it is dry and sunny. The underground tubers are excavated, the aboveground parts and fibrous roots are removed, washed, corked and dried.

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