Method for cultivating kelp and asparagus alternately

Abstract

The invention relates to an algae cultivation technique, in particular to a method for cultivating kelp and asparagus alternately in north coastal areas. The method disclosed by the invention is used for cultivating the kelp from November to June in the next year and cultivating the asparagus from May to November. The method has the advantages that the invention aims to provide the method for performing perennial restoration on the northern shallow sea cultivation environment. The method is convenient to operate and low in cost, enables the kelp and the asparagus to grow stably, and is capable of performing perennial ecological regulation on the northern shallow sea cultivation environment. The method has the specific advantages as follows: 1) the sea area resource is used completely; 2) the production cost is saved; 3) the sea area environment is improved; and 4) the economic benefit is remarkable.

Description

Technical field

[0001] The invention relates to a seaweed cultivation technology, in particular to a method for rotating kelp and asparagus in the northern sea area. Background technique

[0002] Macroalgae are known as the most potential biological purifiers. During photosynthesis, they can not only use carbon dioxide and release oxygen, but also use the dissolved inorganic nitrogen and phosphorus in the water body to purify water quality. Large seaweeds have many functions such as edible, nutrient absorption, carbon sequestration and as industrial raw materials. Its breeding technology and ecological function are widely concerned by countries all over the world. The integrated farming of kelp, fish and shellfish in northern China has a long history and significant economic and ecological benefits. However, kelp is a low-temperature species. After harvest, the nutrients in the sea area usually increase significantly, the dissolved oxygen drops to the bottom, and the sea environ...

Examples

Embodiment 1

[0052] A method of cultivating kelp and Asparagus in rotation. From November to June of the following year, kelp is cultivated, and from May to November, the specific method is as follows:

[0053] 1. Kelp culture:

[0054] 1. Seedling holding at sea

[0055] Before transporting kelp seedlings to the sea area of ​​the farm, avoid exposure to the sun, and the best time to hang the seedlings is early in the morning.

[0056] Choose the coastal sea area of ​​the inner bay with small wind and waves, smooth tide, fertile water quality, transparency of 1m to 3m, and less floating mud and algae for temporary cultivation of kelp seedlings. Cut the seedling curtain into 50cm~60cm seedling ropes, hang the upper end on the hanging rope, and tie the falling stone at the lower end to stabilize it under the water 80cm~120cm, and the interval between each seedling rope is about 20cm. During the temporary rearing of seedlings, ammonium nitrate is required to be fertilized by hanging bags. Hang a ba...

Embodiment 2

[0089] In April 2002, it was transported by air from Putian, Fujian to Qingdao, and 150 kg of Asparagus spp. After being sterilized and decontaminated, it was temporarily raised in the laboratory for one week and then transported to the Sanggou Bay breeding area in Weihai, Shandong for small-scale breeding experiments. The seedling hanging method is adopted for breeding, with three strands of polyethylene rope with a length of about 2.5m, each rope is clamped with 1m of seedlings, and the seedlings are cut into 100g of 15cm long asola seedlings in 16~18 clusters, namely 100g / m rope. Seedling ropes are tied on a breeding raft with an interval of about 1m. Asparagus is 0.5~1.5m above the water surface. It is raised in the shallow sea shellfish breeding area between falling rocks, and more than 1,000 ropes are cultivated.

[0090] From April 26, 2002 to August 20, 2002, after 116 days of cultivation, Asparagus spp increased 89 times in weight, and the average specific growth rate was...

Embodiment 3

[0095] After seven years of research and exploration from 2002 to 2008, a rotating culture technique suitable for kelp and asparagus in the northern seas has been basically established.

[0096] From 2009 to 2010, Shandong Lidao Marine Science and Technology Co., Ltd. promoted the rotation technology of kelp and asparagus, with a cultivation area of ​​500 mu. On October 20, 2009, the kelp seedlings were transported to the sea for temporary rearing. After 22 days of cultivation, the seedlings were separated on November 11. In April 2010, the wet weight of kelp reached about 2.5Kg, and the average length reached 3.5m ( figure 2 ), the harvest started on May 10, 2010, and the harvest was completed on May 30, with a total of 8,000 tons of fresh kelp. On May 12, 10 tons of Asparagus seedlings were purchased from Putian, Fujian, and transported to the sea area with an insulated truck for 1 week. The seedlings were clamped on May 19, and each rope clamped 1kg of seedlings. A total of 10...

Technical field

[0001] The invention relates to a seaweed cultivation technology, in particular to a method for rotating kelp and asparagus in the northern sea area. Background technique

[0002] Macroalgae are known as the most potential biological purifiers. During photosynthesis, they can not only use carbon dioxide and release oxygen, but also use the dissolved inorganic nitrogen and phosphorus in the water body to purify water quality. Large seaweeds have many functions such as edible, nutrient absorption, carbon sequestration and as industrial raw materials. Its breeding technology and ecological function are widely concerned by countries all over the world. The integrated farming of kelp, fish and shellfish in northern China has a long history and significant economic and ecological benefits. However, kelp is a low-temperature species. After harvest, the nutrients in the sea area usually increase significantly, the dissolved oxygen drops to the bottom, and the sea environ...

Examples

Embodiment 1

[0052] A method of cultivating kelp and Asparagus in rotation. From November to June of the following year, kelp is cultivated, and from May to November, the specific method is as follows:

[0053] 1. Kelp culture:

[0054] 1. Seedling holding at sea

[0055] Before transporting kelp seedlings to the sea area of ​​the farm, avoid exposure to the sun, and the best time to hang the seedlings is early in the morning.

[0056] Choose the coastal sea area of ​​the inner bay with small wind and waves, smooth tide, fertile water quality, transparency of 1m to 3m, and less floating mud and algae for temporary cultivation of kelp seedlings. Cut the seedling curtain into 50cm~60cm seedling ropes, hang the upper end on the hanging rope, and tie the falling stone at the lower end to stabilize it under the water 80cm~120cm, and the interval between each seedling rope is about 20cm. During the temporary rearing of seedlings, ammonium nitrate is required to be fertilized by hanging bags. Hang a ba...

Embodiment 2

[0089] In April 2002, it was transported by air from Putian, Fujian to Qingdao, and 150 kg of Asparagus spp. After being sterilized and decontaminated, it was temporarily raised in the laboratory for one week and then transported to the Sanggou Bay breeding area in Weihai, Shandong for small-scale breeding experiments. The seedling hanging method is adopted for breeding, with three strands of polyethylene rope with a length of about 2.5m, each rope is clamped with 1m of seedlings, and the seedlings are cut into 100g of 15cm long asola seedlings in 16~18 clusters, namely 100g / m rope. Seedling ropes are tied on a breeding raft with an interval of about 1m. Asparagus is 0.5~1.5m above the water surface. It is raised in the shallow sea shellfish breeding area between falling rocks, and more than 1,000 ropes are cultivated.

[0090] From April 26, 2002 to August 20, 2002, after 116 days of cultivation, Asparagus spp increased 89 times in weight, and the average specific growth rate was...

Embodiment 3

[0095] After seven years of research and exploration from 2002 to 2008, a rotating culture technique suitable for kelp and asparagus in the northern seas has been basically established.

[0096] From 2009 to 2010, Shandong Lidao Marine Science and Technology Co., Ltd. promoted the rotation technology of kelp and asparagus, with a cultivation area of ​​500 mu. On October 20, 2009, the kelp seedlings were transported to the sea for temporary rearing. After 22 days of cultivation, the seedlings were separated on November 11. In April 2010, the wet weight of kelp reached about 2.5Kg, and the average length reached 3.5m ( figure 2 ), the harvest started on May 10, 2010, and the harvest was completed on May 30, with a total of 8,000 tons of fresh kelp. On May 12, 10 tons of Asparagus seedlings were purchased from Putian, Fujian, and transported to the sea area with an insulated truck for 1 week. The seedlings were clamped on May 19, and each rope clamped 1kg of seedlings. A total of 10...

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