CN108782381A - A kind of river cray cultural method - Google Patents

Abstract

The invention discloses a kind of river cray cultural methods, comprise the steps of：One, selection flood can drain, drought can be retained, water temperature drop is within 1 meter, the river of 1 ~ 1.5 meter of the depth of water, 0.8 ~ 1.2m/s of water flow velocity, and the dykes and dams of river both sides are firm, at the blowdown for avoiding operating mode enterprise；Two, in river, block is arranged in the broad water surface, and mesh sheet selects polyethylene screen cloth, and net height is more than long-term 0.6 ~ 0.8m of peak level, mesh 0.7cm；Three, suitable shrimp species are launched according to water quality girth of a garment situation, launches 800 ~ 1500 tail of lobster of 2 ~ 3cm per acre；Four, concentrated feed is given up at shoal and eat field, using pellet feeding lobster；Five, daily inspection block, will day and night check in flood season.The present invention cultivates cray by river, and easy to operate, early investment is low, and return rate is high, suitable growing environment can be provided to cray, yield is high, good in economic efficiency.

Description

A kind of river cray cultural method

Technical field

The present invention relates to a kind of river cray cultural methods, are applied to crayfish breeding technique field.

Background technology

Cray is economic freshwater shrimps, and internal protein content is very high, and meat is soft, easy to digest, to body It is weak and need the food that the people raised is fabulous after being ill；Magnesium, zinc, iodine, selenium etc. are also rich in shrimp, magnesium has cardiomotility There is important adjustment effect, cardiovascular system can be protected, it can reduce blood cholesterol level, prevent artery sclerosis, simultaneously Can also coronary artery dilator, be conducive to preventing hypertension and myocardial infarction, in recent years China have become Important Economic cultivation Kind, the aquaculture model majority of cray is individually to be cultivated in pond or lotus field currently on the market, larger in early investment, need to be It being excavated in pond or lotus field and supports shrimp ditch, and apply base manure, river and land contact surface are relatively large, and the organic matter flowed into is also more, Water quality is more fertile, can be used for improve lobster cultured output, but currently on the market by river cultivate cray yard feeding pattern compared with It is few, do not have systematic cultural method.

Invention content

To solve the problem above-mentioned, the invention discloses a kind of river cray cultural methods, comprise the steps of：

One, selection flood can drain, it is non-irrigated can be retained, water temperature drop is within 1 meter, 1 ~ 1.5 meter of the depth of water, 0.8 ~ 1.2m/s of water flow velocity The dykes and dams in river, river both sides are firm, at the blowdown for avoiding operating mode enterprise；

Two, block is set in the broad water surface in river, mesh sheet selects polyethylene screen cloth, net is high be more than long-term peak level 0.6 ~ 0.8m, mesh 0.7cm sew on rigid plastics film in mesh sheet upper end, and pass through the wild fishes in electric trapper removal net；

Three, suitable shrimp species are launched according to water quality girth of a garment situation, launches 800 ~ 1500 tail of lobster of 2 ~ 3cm per acre, puts in a suitable place to breed simultaneously The quantity ratio of silver carp, bighead, silver carp, bighead and lobster is 1:1：10~12；

Four, concentrated feed being given up at shoal and eating field, using pellet feeding lobster, feeding volume grows and takes the photograph according to season, lobster It eats intensity to determine, feed twice day；

Five, daily inspection block, will day and night check in flood season, prevents water level excessively high, while cleaning primary net every a week Piece ensures that water body exchanges.

Using the technical program, the beneficial effects of the invention are as follows：Cray is cultivated by river, easy to operate, early period throws Enter low, return rate height, suitable growing environment can be provided to cray, yield height is good in economic efficiency.

Specific implementation mode

In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below Specific embodiment is closed, the present invention is further explained.

The invention discloses a kind of river cray cultural methods, comprise the steps of：

One, selection flood can drain, it is non-irrigated can be retained, water temperature drop is within 1 meter, 1 ~ 1.5 meter of the depth of water, 0.8 ~ 1.2m/s of water flow velocity The dykes and dams in river, river both sides are firm, at the blowdown for avoiding operating mode enterprise；

Two, block is set in the broad water surface in river, mesh sheet selects polyethylene screen cloth, net is high be more than long-term peak level 0.6 ~ 0.8m, mesh 0.7cm sew on rigid plastics film in mesh sheet upper end, and pass through the wild fishes in electric trapper removal net；

Three, suitable shrimp species are launched according to water quality girth of a garment situation, launches 800 ~ 1500 tail of lobster of 2 ~ 3cm per acre, puts in a suitable place to breed simultaneously The quantity ratio of silver carp, bighead, silver carp, bighead and lobster is 1:1：10~12；

Four, concentrated feed being given up at shoal and eating field, using pellet feeding lobster, feeding volume grows and takes the photograph according to season, lobster It eats intensity to determine, feed twice day；

Five, daily inspection block, will day and night check in flood season, prevents water level excessively high, while cleaning primary net every a week Piece ensures that water body exchanges.

Finally it should be noted that：Above example is only to illustrate the present invention and not limits technology described in the invention Scheme；Therefore, although this specification with reference to above-mentioned each embodiment to present invention has been detailed description, this Field it is to be appreciated by one skilled in the art that still can modify to the present invention or equivalent replacement；And all do not depart from this The technical solution of the spirit and scope of invention and its improvement should all be covered in scope of the presently claimed invention.

Claims (1)

1. a kind of river cray cultural method, which is characterized in that comprise the steps of：

One, selection flood can drain, it is non-irrigated can be retained, water temperature drop is within 1 meter, 1 ~ 1.5 meter of the depth of water, 0.8 ~ 1.2m/s of water flow velocity The dykes and dams in river, river both sides are firm, at the blowdown for avoiding operating mode enterprise；

Two, block is set in the broad water surface in river, mesh sheet selects polyethylene screen cloth, net is high be more than long-term peak level 0.6 ~ 0.8m, mesh 0.7cm sew on rigid plastics film in mesh sheet upper end, and pass through the wild fishes in electric trapper removal net；

Three, suitable shrimp species are launched according to water quality girth of a garment situation, launches 800 ~ 1500 tail of lobster of 2 ~ 3cm per acre, puts in a suitable place to breed simultaneously The quantity ratio of silver carp, bighead, silver carp, bighead and lobster is 1:1：10~12；

Four, concentrated feed being given up at shoal and eating field, using pellet feeding lobster, feeding volume grows and takes the photograph according to season, lobster It eats intensity to determine, feed twice day；

Five, daily inspection block, will day and night check in flood season, prevents water level excessively high, while cleaning primary net every a week Piece ensures that water body exchanges.