The invention relates to a paddy field for mixed culture. The paddy field comprises a ridge, a ditch and a field body. The ditch is 100-150 m long, 3-5 mm wide and 1.2-1.5 m deep. A channel is formed between the field body and the ridge. Freshwater shrimps and odontobutis obscura are stocked in the ditch. Fertilization and deinsectization of the paddy field are carried out through the freshwater shrimps and the odontobutis obscura. Deinsectization is carried out through an ecological chain, paddy is purely environmentally friendly and free from pollution, soil of the paddy field comes from the valley in southern mountainous area in Anhui province, and water of the paddy field comes from mountain spring water. The paddy planted in the paddy field is environment-friendly and pollution-free organic paddy which is popular in the market, aquatic products in the ditch are secondary products, and the economic efficiency is improved; due to the layout of the paddy field, the paddy can be harvested conveniently, and tourists can visit the paddy field conveniently.

Paddy field for mixed culture

The invention provide a cultivating method for increasing high-quality freshwater shrimp seed output comprising following basic steps: cultivating pool cleaning and preparing, freshwater shrimp selecting, stocking and cultivating, enemy organism killing, stable bait cultivating, reasonable commodity shrimp feed feeding, reasonable commodity juvenile shrimp feed feeding, crustacean special nutrition supplementing, daily management and seed catching. The method of the invention can reduce cost of seed growing, increase the output and quality of freshwater shrimp seeds.

Cultivating method for increasing high-quality freshwater shrimp seed output

The invention discloses a method for regulating water body dissolved oxygen of a larval crab culture pond The method comprises the steps of aquatic plant cultivation and pond oxygen dissolution The method is characterized in that according to the aquatic plant cultivation step, elodea nuttallii and hydrilla varticillata undergo point-shaped cultivation in a pond in March every year, the cultivation point distance is 80-100 cm, alternanthera philoxeroides is transplanted into the pond when the water surface coverage rate of elodea nuttallii in the pond is reduced to below 20%, and the water surface coverage rate of alternanthera philoxeroides in the pond is not larger than 20%; and the aquatic plant coverage rate in the pond reaches 60-65% The method is simple to implement, larval crabs are low in precocious rate, a good survival environment is created for growth of the larval crabs, it is guaranteed that the larval crabs are robust, the shell capacity is enhanced, and a foundation is laid for high and stable yield of the larval crabs

Method for regulating water body dissolved oxygen of larval crab culture pond

The invention discloses a zoea freshwater shrimp feed which is prepared from the following components in parts by weight: 30-40 parts of farm manure, 10-15 parts of river bottom sludge, 10-15 parts of soybean milk, 2-3 parts of skim milk powder, 1-2 parts of Chinese herbal medicine additive, 4-5 parts of medical stone, 0.2-0.5 part of complex vitamin, 0.5-0.8 part of beta-glucan and 0.1-0.3 part of nucleotide. The feed disclosed by the invention is uniquely prepared according to the nutritional requirements of the growth stage from zoea to metamorphous juvenile shrimps, has the characteristics of reasonable component proportioning and high nutritional value, enhances the stress resistance and immunity of juvenile shrimps and remarkably increases the survival rate; and moreover, the components of the feed are safe, environment-friendly and healthy, and the fed juvenile shrimps have the characteristics of rich nutrition, strong disease resistance and safety without medicine residues.

Zoea freshwater shrimp feed and preparation method thereof

The invention discloses a method for ecologically controlling aquatic plants in a river crab pond. According to the method provided by the invention, biomimetic aquatic plants are planted while the aquatic plants are planted in the river crab pond, the biomimetic aquatic plants are used to replace a part of the aquatic plants to occupy the space of the river crab pond, so that overgrowth of the aquatic plants in summer is effectively controlled, chemicals are not used, manual weeding is not needed, and the method is environmentally-friendly high-efficiency; the biomimetic aquatic plants can imitate the aquatic plants to provide an aquatic environment for crabs, effectively control water temperature, and do not consume any substances; the biomimetic aquatic plants can utilize solar energy to increase oxygen for the crab pond, have long service life and low comprehensive costs, and are suitable for large-scale promotion; and a polyethylene grid module is prepared on a shore, the aquaticplants and the biomimetic aquatic plants are planted in advance, a plurality of the aquatic plants and the biomimetic aquatic plants are spread continuously, the time for planting the aquatic plants is reduced, labor is saved, and when the crabs are harvested, the polyethylene grid module is pulled out from the water surface together with the aquatic plants, so that no obstacles of obstructing catching exist in the crab pond.

Method for ecologically controlling aquatic plants in river crab pond

The invention discloses a strip planting method of aquatic plants in a crab-shrimp culture pond. The method includes: clearing and sterilizing a pond, designating an aquatic plant area and a non-aquatic-area area, applying fertilizers in the aquatic plant area by deep tillage, fencing a bottom compact field, planting aquatic plants, reasonably managing the aquatic plants, and removing a fence. The strip planting method of aquatic plants in the crab-shrimp culture pond has the advantages that growth characteristics of the shrimp and crab and growth habits of different aquatic plants are combined, the functions of the aquatic plants in improving environment and promoting growth of the shrimp and crab are given to maximum play, and yield of the shrimp and crab can be increased by 5-10%.

Strip planting method of aquatic plants in crab-shrimp culture pond

The invention provides a method of breeding freshwater shrimps in a crab pond. The method includes the steps of establishing a freshwater shrimp breeding area, planting aquatic plants, stocking parent freshwater shrimps, cultivating the parents in an enhanced manner, and cultivating young shrimps in an enhanced manner. The method has the advantages that biological characteristics of the freshwater shrimps and river crabs are combined, reasonable breeding management is performed, yield of the freshwater shrimps is increased, 25-20kg of freshwater shrimps can be obtained per 667m , and economic benefit of the crab pond per unit area is increased by 30-40%.

Method of breeding freshwater shrimps in crab pond

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Strip planting method of aquatic plants in crab-shrimp culture pond

Method of breeding freshwater shrimps in crab pond