Breeding method of one-year double-cropping seedlings in rice field of procambarus clarkii
A technology of Procambarus clarkii and paddy fields, which is applied in the fields of fish farming, application, climate change adaptation, etc., and can solve the problem of small breeding scale, procambarus clarkii seed cannot meet the breeding production, and the seed cannot meet the large-scale breeding production and other issues, to achieve the effect of improving the survival rate and oviposition rate of broodstock
Inactive Publication Date: 2015-10-14
HUAZHONG AGRICULTURAL UNIVERSITY
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AI Technical Summary
Problems solved by technology
Due to the short supply of Procambarus clarkii in domestic and foreign markets, the seedlings of Procambarus clarkii cannot meet the needs of aquaculture production
In the artificial seed breeding of paddy fields, the seedling breeding method of one season per year was used in the past. The breeding scale is small, and the seedlings cannot meet the needs of large-scale breeding production.
Method used
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Experimental program
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Effect test
Embodiment 1
[0017] The present invention will be described in further detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.
[0018] (1) Excavating a zigzag ditch in the paddy field: select an area of 3330-63280 square meters (5-80 mu) of paddy field, excavate a zigzag ditch around the paddy field, the ditch width of the zigzag ditch is 3-4 meters, keep The water depth is 1.5-1.8 meters.
[0019] (2) Plant aquatic plants in the paddy fields outside the zigzag ditch and the zigzag ditch: plant or transplant the water weed Elodea or Hydrilla verticillium in the zigzag ditch every year from January to March, and keep the water level at 10-30 cm; From January to March, only the aquatic plant Elodea is planted or transplanted in the paddy fields outside the Zixinggou. After the mid-season rice is harvested in October, the rice fields are flooded with water.
[0020] (3) Put juvenile shrimps in the zigzag ditch: put juvenile Procamb...
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Abstract
The invention belongs to the field of aquatic breeding technology, and relates to seedling breeding in aquatic breeding, in particular to a breeding method of one-year double-cropping seedlings in rice field of procambarus clarkii. The breeding method comprises steps of 1) excavating zigzag furrows in the rice field; 2) planting different water plants in the zigzag furrows and outer rice field besides the zigzag furrows; 3) putting young shrimps in the zigzag furrows; 4) selecting parents in the zigzag furrows and putting the parents in the zigzag furrows; and 5) putting the parents in twice in the zigzag furrows. The breeding method is advantageous in that 1) an artificial ecological system of one-year double-cropping seedling breeding in rice field of procambarus clarkii is established; 2) improved variety of parent shrimps in the zigzag furrows of the rice filed are selected, so rate of survival and egg laying is increased; and 3) the parent shrimps are put in the zigzag furrows in twice, so yield of the seedling is doubled, and yield per unit mu of high-quality large young shrimps can reach 160,000.
Description
technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a breeding method of Procambarus clarkii for two-season seedlings in a year in a paddy field. Relevant to the field of seed breeding technology in aquaculture, Background technique [0002] Rice field culture of Procambarus clarkii has become one of the main farming models in my country. Due to the short supply of Procambarus clarkii in domestic and foreign markets, the seedlings of Procambarus clarkii cannot meet the needs of aquaculture production. In the artificial seed breeding in paddy fields, the seed breeding method of one season per year was used in the past. The breeding scale is small, and the seed cannot meet the needs of large-scale breeding production. Contents of the invention [0003] The present invention aims to provide a method for breeding Procambarus clarkii seedlings in a year in a rice field. The method of the present invention comprises:...
Claims
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CPCY02A40/81
Inventor 龚世园何绪刚刘胜利孙瑞杰黄文虎袁兆嘉李亮涛覃雅
Owner HUAZHONG AGRICULTURAL UNIVERSITY