What are the planting prospects of western sea shoots in 2020? What are the high-yield cultivation techniques?

Western sea shoots have always been known as "sea ginseng" and "plant seafood". They are like jade in color, coral in shape, crisp and tender in taste, and have a unique and delicious seafood flavor. What are the planting prospects of western sea shoots in 2020? What are its high-yield cultivation techniques?

I. the planting prospect of western sea shoots in 2020

1. Nutritional value

Western sea shoots are rich in nutrients, rich in protein, amino acids, β-carotene, dietary fiber and bioactive substances such as sodium, potassium, magnesium, calcium, iron, zinc, iodine, selenium, strontium and other marine minerals, trace elements and alkaloids. Its calcium content is five times that of milk and three times that of oysters, and the content of carotene is tens of times that of traditional vegetables. Western sea bamboo shoots are not only a characteristic marine vegetable, but also a medicinal plant with medical and health care value. According to the literature, western sea shoots have many therapeutic effects on obesity, hypertension, constipation, diabetes, arthritis, septicemia and cancer.

2. Market demand

In recent years, with the in-depth understanding of the nutritional value of western sea shoots, Europe and the United States have set off a trend of eating western sea shoots, and gradually popularized them to other countries and regions in the world. Due to the use of seawater irrigation, the production of western sea shoots does not use chemical fertilizers and pesticides, which meets the requirements of organic vegetable production, and the non-transgenic vegetables are domesticated from wild halophytes, which is a safe vegetable with the whole ecological concept. Because of its high nutritional value and social and ecological value, western sea bamboo shoots have become the best in the eyes of gourmets and the new aristocracy of vegetables.

3. Low planting cost

As the fertilizer needed for the growth of western sea shoots can be supplemented from the waste water from mariculture ponds, watering western sea shoots with waste water from tidal flat mariculture can not only reduce the amount of fertilizer and planting costs, but also effectively solve the problem of seawater pollution caused by large-scale mariculture in offshore areas and form a virtuous circle. In the Beijing market, western sea shoots can be sold for more than 100 yuan per catty. Vegetable farmers grow the vegetable with an average annual income of 20-300000 yuan per greenhouse, which can recover the cost of the greenhouse in a year and a half.

2. High-yield cultivation techniques of western sea shoots.

1. Soil preparation and fertilization

Western sea shoots are suitable for growing in soil with a salinity of 1.5% Mel 3.0%, and do not require high soil texture, such as sand, clay and sandy loam. Before planting, the consolidated saline-alkali land should be ploughed first to make the soil loose and ventilated. According to the different soil conditions, two types of sunny planting and shady planting were adopted. The improved land with good drainage and fertile soil is planted in the shade border with a width of 1-1.5 m and a monopoly width of 0.5-1 m, which is convenient for harvesting and installing irrigation facilities; for saline-alkali land that has not been improved, it is easy to accumulate water because of soil consolidation. Yang border planting is adopted.

2. Sowing seeds

Generally, when sowing in spring, the suitable temperature for seed germination is about 15 ℃. The seeds with full, dry and disease-free seeds are selected and used in air for 1-2 days. Before sowing, mix seeds and fine sand according to the weight ratio of 1:5, which can be sowed evenly or in strips, and the seed consumption is about 2kg per 667m. After sowing, cover the soil around 0.5cm.

3. Field management

(1) Fertilizer and water management

Seawater or underground brine is used as the source of irrigation, and the salinity of seawater is kept at 2.5%-3.0%. If the salinity is too high, fresh water should be diluted. Due to the hardening of saline-alkali soil due to the lack of water and the large water demand for the growth of western sea shoots, micro-spray belt is generally used for irrigation in order to save cost.

In the week from sowing to emergence, sprinkler irrigation should be done once in the morning and in the afternoon to ensure that the soil is moist. After the seedlings are unearthed, the times of irrigation can be reduced appropriately, and the times of irrigation can be adjusted according to the soil moisture during the whole growing period. Because the exuberant growth period of western sea shoots is in summer, there are more Rain Water and need to be drained in time.

The demand for fertilizer for western sea shoots is relatively small, generally applying organic fertilizer 200kg per 667m. The principle of fertilizing based on base fertilizer and supplemented by topdressing was adopted. In order to reduce waste, the method of ditch fertilization was adopted when applying base fertilizer, the depth of ditch was about 20cm, and the fertilizer was scattered in the ditch and fertilized evenly.

After fertilizing, rake the soil. When the western sea shoots grow for 45 days, they can grow to 15cm and apply organic fertilizer once. The method of spreading fertilizer was used, and the organic fertilizer 30kg was applied every 667m. After topdressing, sprinkler irrigation should be applied in time to allow fertilizer to infiltrate into the soil.

(2) replenishing seedlings

After the seedlings are unearthed, in order to give the western sea shoots enough growth space and prevent the branches and leaves from growing too dense, it is necessary to interseedling the western sea shoots; in addition, in order to make full use of the land resources, it is necessary to replenish the seedlings of the western sea shoots.

(3) loosening the soil and weeding

For seriously consolidated saline-alkali land, we should often hoe to ensure that the soil is loose; in addition, for land with loose and fertile soil, we should often weed to prevent weeds from competing with western sea shoots for nutrition.

4. Harvest

After 70 days of growth, the plant height can reach 30cm. At this time, the growth of western sea shoots can be promoted by picking fresh vegetables. When picking, the fleshy stem of western sea bamboo shoots is tender and pointed, and the picking length is 6-10cm. After picking off the tender tip, the western sea bamboo shoots will continue to grow new branches from the node, and vegetable farmers can pick them continuously from August to October.

Seawater vegetable concessions can make full use of land value and reduce planting costs, but the editor suggests that vegetable farmers should treat their pros and cons objectively and avoid blind voting, so as to avoid losses.