Method for ecological breeding of crawfish in rice field

Abstract

The invention belongs to the technical field of aquaculture, in particular to a method for ecological breeding of crawfish in the rice field. The method for ecological breeding of crawfish in the rice field has the following beneficial effects: excavating groined field ditches after rice harvesting, arranging an anti-escape net and aeration equipment around the rice field to obtain an aquatic breeding farm for crawfish; scattering quicklime to disinfect and planting waterweeds to measure water temperature and throwing parent shrimps; throwing mixed feeds to the field ditches per day, scattering farmyard manures to the field ditches after breeding for some time and planting fresh water plants, marketing crawfish after growing up, finally, throwing young crawfish after transplanting seedlings of rice and throwing mixed feeds, completely catching adult crawfish before rice harvesting, and keeping crawfish that are not caught as seed crawfish in a pond for natural reproduction and carrying out rotation planting in a circular manner. The method for ecological breeding of crawfish in the rice field has the following beneficial effects: the method can be used for dual purposes in one field so that income is raised; meanwhile, artificial feed and medicament are not used so that nutritional ingredients of crawfish are improved; and no environmental contamination of aquatic water is caused.

Description

technical field

[0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for ecological cultivation of crayfish in paddy fields. Background technique

[0002] At present, there are three main methods of crayfish farming: 1. The form of stocking shrimp, 2. The form of stocking shrimp, and 3. The form of raising shrimp. The first form of stocking is to stock shrimp about one month before the rice harvest from July to August. This period is not only high temperature but also the peak season for rice use of pesticides, which will easily lead to a decline in the survival rate of lobsters, and the larvae lobsters that come out of eggs Growth rate is slowed for an extended period of time. The second form is to release egg-bearing shrimp after the mid-season rice is harvested from September to October. The growth period of juvenile shrimp is relatively short, and it may be extended to the market after May of the next year, and the nu...

Examples

example 1

[0024] After the rice is harvested in October, select 5 mu of paddy field soil with sufficient water source, convenient irrigation and drainage, fertile soil, and strong water retention, and dig a trench at the inner layer of the field ridge at 2.0m, dig a well-shaped field trench, and the width of the field trench is 1.0m , the depth is 0.7m, and the interval between each ditch is 5m. The excavated soil can reinforce the ridge, and set up anti-escape nets and oxygenation equipment around the paddy field to increase oxygen in the water body. Land; apply quicklime to the rice planting land and the field ditch for disinfection, the amount of application per mu is 40kg, and after 3 days of spreading, pour water into the field ditch to a water level of 55cm, and after the water injection, sprinkle farmyard manure into the water and soil, and apply fertilizer per mu The quantity is 700kg, and Elodea is planted in the field ditch 3 days after spreading, and the planting amount per ac...

example 2

[0026] After the rice is harvested in November, select 7 mu of paddy field soil with sufficient water source, convenient drainage and irrigation, fertile soil, and strong water retention, and dig a trench at the inner layer of the ridge at 2.2m, dig a well-shaped field trench, and the width of the field trench is 1.2m , the depth is 0.8m, and the interval between each ditch is 7m. The excavated soil can reinforce the ridge, and set up anti-escape nets and oxygenation equipment around the rice field to increase oxygen in the water body. After the horizontal and vertical ditch are formed, crayfish can be cultivated Land; apply quicklime to the rice planting land and the field ditch for disinfection, and the amount of application per mu is 45kg. After 5 days of spreading, water is poured into the field ditch to a water level of 60cm. The amount is 800kg, and Elodea is planted in the field ditch 5 days after spreading, and the planting amount per mu of field ditch is 50kg; after 5 ...

example 3

[0028] After the rice is harvested in November, select 6 mu of paddy field soil with sufficient water source, convenient irrigation and drainage, fertile soil, and strong water retention, and dig a trench at the inner layer of the field ridge at 2.1m, dig a well-shaped field trench, and the width of the field trench is 1.1m , the depth is 0.7m, and the interval between each ditch is 6m. The excavated soil can reinforce the ridge, and set up anti-escape nets and oxygenation equipment around the paddy field to increase oxygen in the water body. After the horizontal and vertical ditch are formed, crayfish farming Land; apply quicklime to the rice planting land and the field ditch for disinfection, the amount of application per mu is 43kg, after 4 days of spreading, water is poured into the field ditch to a water level of 58cm, and after the water injection, farmyard manure is applied to the water and soil, and the fertilizer is applied per mu The amount is 750kg, and 4 days after ...

technical field

[0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for ecological cultivation of crayfish in paddy fields. Background technique

[0002] At present, there are three main methods of crayfish farming: 1. The form of stocking shrimp, 2. The form of stocking shrimp, and 3. The form of raising shrimp. The first form of stocking is to stock shrimp about one month before the rice harvest from July to August. This period is not only high temperature but also the peak season for rice use of pesticides, which will easily lead to a decline in the survival rate of lobsters, and the larvae lobsters that come out of eggs Growth rate is slowed for an extended period of time. The second form is to release egg-bearing shrimp after the mid-season rice is harvested from September to October. The growth period of juvenile shrimp is relatively short, and it may be extended to the market after May of the next year, and the nu...

Examples

example 1

[0024] After the rice is harvested in October, select 5 mu of paddy field soil with sufficient water source, convenient irrigation and drainage, fertile soil, and strong water retention, and dig a trench at the inner layer of the field ridge at 2.0m, dig a well-shaped field trench, and the width of the field trench is 1.0m , the depth is 0.7m, and the interval between each ditch is 5m. The excavated soil can reinforce the ridge, and set up anti-escape nets and oxygenation equipment around the paddy field to increase oxygen in the water body. Land; apply quicklime to the rice planting land and the field ditch for disinfection, the amount of application per mu is 40kg, and after 3 days of spreading, pour water into the field ditch to a water level of 55cm, and after the water injection, sprinkle farmyard manure into the water and soil, and apply fertilizer per mu The quantity is 700kg, and Elodea is planted in the field ditch 3 days after spreading, and the planting amount per ac...

example 2

[0026] After the rice is harvested in November, select 7 mu of paddy field soil with sufficient water source, convenient drainage and irrigation, fertile soil, and strong water retention, and dig a trench at the inner layer of the ridge at 2.2m, dig a well-shaped field trench, and the width of the field trench is 1.2m , the depth is 0.8m, and the interval between each ditch is 7m. The excavated soil can reinforce the ridge, and set up anti-escape nets and oxygenation equipment around the rice field to increase oxygen in the water body. After the horizontal and vertical ditch are formed, crayfish can be cultivated Land; apply quicklime to the rice planting land and the field ditch for disinfection, and the amount of application per mu is 45kg. After 5 days of spreading, water is poured into the field ditch to a water level of 60cm. The amount is 800kg, and Elodea is planted in the field ditch 5 days after spreading, and the planting amount per mu of field ditch is 50kg; after 5 ...

example 3

[0028] After the rice is harvested in November, select 6 mu of paddy field soil with sufficient water source, convenient irrigation and drainage, fertile soil, and strong water retention, and dig a trench at the inner layer of the field ridge at 2.1m, dig a well-shaped field trench, and the width of the field trench is 1.1m , the depth is 0.7m, and the interval between each ditch is 6m. The excavated soil can reinforce the ridge, and set up anti-escape nets and oxygenation equipment around the paddy field to increase oxygen in the water body. After the horizontal and vertical ditch are formed, crayfish farming Land; apply quicklime to the rice planting land and the field ditch for disinfection, the amount of application per mu is 43kg, after 4 days of spreading, water is poured into the field ditch to a water level of 58cm, and after the water injection, farmyard manure is applied to the water and soil, and the fertilizer is applied per mu The amount is 750kg, and 4 days after ...

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