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Method for breeding juvenile crabs in rice fields

A technology for deducting crabs and paddy fields is applied in the field of ecological aquaculture of special aquatic products, which can solve problems such as the reduction of natural river crabs, and achieve the effects of reducing bulk density, improving symbiotic ecological environment, and improving ventilation conditions.

Inactive Publication Date: 2014-07-30
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, natural river crabs are rich in nutrients and have become a delicacy in people's catering. As the environment changes, natural river crabs are decreasing day by day, which can no longer meet people's needs.

Method used

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  • Method for breeding juvenile crabs in rice fields
  • Method for breeding juvenile crabs in rice fields
  • Method for breeding juvenile crabs in rice fields

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The method of the paddy field culture buckle crab of present embodiment is, as figure 1 The schematic diagram of raising buckle crabs in paddy fields is shown as follows:

[0059] (1) Selection of paddy fields: Crab paddy fields should be selected near water sources, with good water quality, no pollution, convenient drainage and irrigation, strong water retention and fertilizer retention performance, not submerged during flood seasons, and low-lying and shoals with large contiguous areas.

[0060] (2) Selection of rice seeds: Rice seeds should be selected from varieties that are resistant to diseases and insect pests, lodging resistance, salt and alkali tolerance, fertility resistance, high quality and high yield, and choose Liaoxing No. 1 rice variety.

[0061] (3) Selection of megalopa: transport crab larvae from the hatchery and place them in the crab ditch on one side of the field for temporary cultivation. Salt has been added in advance to adjust the water salinity...

Embodiment 2

[0086] During 2006~2009 May~October, in Baqiang Town, Panshan County, Panjin City, Liaoning Province, a rice field crab breeding demonstration area was implemented, and the method steps of Embodiment 1 were adopted to carry out paddy field breeding buckle crabs and rice in the rice field crab breeding demonstration base. Seed Koshihikari rice, and choose to stock crabs with neat specifications in early June, with an average of 0.25g / piece, 12,000 pieces / mu. As a result, the average number of buckle crabs caught in early October is 8.3g / piece, with an average of 60 kg / mu; the rice yield is The average is 700-750 kg / mu, as shown in Table 1.

[0087] Table 1

[0088]

[0089] As can be seen from Table 1: the input-output ratios of the crab paddy field and the conventional paddy field are respectively: 1: 2.48 and 1: 1.91; The method of breeding buckle crabs is a four-in-one three-dimensional ecological planting model of rice, buckle crabs, soybeans and Elodea. The obtained crab...

Embodiment 3

[0091] The method of the paddy field culture buckle crab of the present embodiment is:

[0092] (1) Selection of paddy fields: Crab paddy fields should be selected near water sources, with good water quality, no pollution, convenient drainage and irrigation, strong water retention and fertilizer retention performance, not submerged during flood seasons, and low-lying and shoals with large contiguous areas.

[0093] (2), the selection of rice seeds: rice seeds should choose varieties that are resistant to diseases and insect pests, lodging resistance, salt and alkali tolerance, fertility resistance, high quality and high yield, and choose Yanfeng No. 47 rice variety.

[0094] (3) Selection of megalopa: transport crab larvae from the hatchery and place them in the crab ditch on one side of the field for temporary cultivation. Salt has been added in advance to adjust the water salinity of the crab ditch to keep the salinity at 5- 7. Two hours after the megalopa enters the holding...

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Abstract

The invention belongs to the field of ecological breeding of special aquatic products and relates to a method for breeding juvenile crabs in rice fields. A three-dimensional ecological planting and breeding mode of quaternity of rice, the juvenile crabs, soybean and elodea nuttallii is adopted for breeding the juvenile crabs in the rice fields. Annular crab ditches or crab ditches shaped like the Chinese ri are adopted around the rice fields, the elodea nuttallii is planted in the crab ditches, the soybean is planted on ridges, weeds, insects, underwater plankton and benthos in the rice fields are utilized to breed the juvenile crabs, growth of the juvenile crabs is guaranteed, and the good effects of weeding, deinsectization and field cleaning are achieved; meanwhile, excrement of the juvenile crabs further has the effects of returning to the fields through abdomens and continuously improving fertilizer efficiency, and movement of the juvenile crabs, such as food finding, promotes raw nutrient cycle of the soil. The mutual controlling and promoting effects of a biologic chain formed among living beings including the rice, injurious insects and river crabs are utilized, the rice and crab symbiosis ecological environment is improved according to the reproduction law of the rice and organic combination of the living beings, and pollution-free performance, nutrition and high yield of rice and crab products are achieved.

Description

technical field [0001] The invention belongs to the field of ecological cultivation of special aquatic products, and in particular relates to a method for cultivating buckle crabs in paddy fields. Background technique [0002] With the deterioration of the rice planting environment, the occurrence of diseases, insect damage and weed damage is becoming more and more serious. In traditional production, chemical fertilizers and pesticides have become the main means to ensure rice production. The environmental pollution caused, the output value is low, and the efficiency increase is slow. However, ponds, lakes and other cultured river crabs have been labeled as polluting water quality and destroying the ecological environment. It is imminent to develop new rice planting and river crab breeding technologies. [0003] In recent years, the northern regions of my country have begun to take advantage of the ecological resources of paddy fields to breed river crabs, develop ecologic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 马旭洲汪清王武王昂于永清
Owner SHANGHAI OCEAN UNIV
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