Green fodder planting in cage type biological floating raft based on pool and water quality purification method

Abstract

The present invention discloses a pond-based method for planting a green fodder and purifying water by a net cage type biological buoyant raft, which belongs to the field of aquiculture. The method is characterized in that the net cage type biological buoyant raft is designed and consists of plant fixing net plates, a protecting net, and a fixing device; the plant fixing net plates are fixed on the water surface with a breadth of 1.5 m and a mesh size of between 5 and 10cm, respectively; the protecting net which is 2m in breadth and 2cm in mesh size is positioned at the lower side and the circumference of the plant fixing net plates; the fixing device comprises a rope, a foam ball float and a fixing bamboo pole; the plant fixing net plates, the protecting net, the rope and the foam ball float are combined into a close type net cage with a size of 30-50m multiply 1.5m multiply 0.25m; four corners are fixed by the bamboo pole; and the planting area between 45 and 75m2 of each net cage type biological buoyant raft is a production unit. In June and July, water spinaches with a plant height of 30cm are transplanted to the fixing net plates of the net cage type biological buoyant raft with roots thereof so that the stems and leaves of the plants are exposed from the water surface and the root systems are soaked in water. The net cage type biological buoyant raft is configured to covers between 5 and 20 percent of the area of the pond.

Description

technical field [0001] The invention belongs to the technical field of aquaculture. It specifically relates to a method for planting green fodder and purifying water quality based on a pond-type biological floating raft. Background of the invention [0002] Due to the blind pursuit of breeding production by farmers and the large amount of feed and fertilizer used, pond aquaculture is currently facing water quality deterioration, which makes it difficult to continue pond aquaculture, and the deterioration of water quality leads to a large amount of drugs. This vicious cycle not only increases the cost, but also destroys the aquaculture water The environment and the quality of aquaculture products are also affected. The cost of regulating water quality by physical, chemical and microbial methods is very high. Green fodder can provide rich vitamins for pigs and improve meat quality, but in large-scale pig production, green fodder is insufficient, and conventional land plantin...

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Problems solved by technology

Based on this, relevant patents have been declared, such as the floating bed for plant cultivation on the water surface (patent application number 200520095824.8), the all-plastic combined plant floating bed for water cultivation (patent application number 200620019749.1), the network cable plant hydroponic floating bed (patent application number 200620129600.9), the composite ecological Floating Island Water Purification Device (Patent Application No. 200620097874.4), Multifunctional Grass Foil Water Cultivation Floating Bed (Patent Application No. 200620019748.7), Soft Plant Floating Bed for Bank Protection and Water Purification (Patent Application No. 200610164314.0), Water Type Constructed Wetland and Water Purification method (patent application number 200710053250.1), etc., but these inventions have many disadvantages when applied to pond culture water bodies: their complex structure is difficult to install, it is inconvenient to move or disassemble, and the construction cost is relatively high, especially lacking facilities for planting plant root protection, some The facility uses bamboo tubes to try to protect the root system of the planting plants, but the bamboo tubes are easy to scratch the moving fish, and occupy a limited aquaculture water body, reducing the living space of the aquaculture fish and affecting the normal growth of the aquaculture fish

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