Method for preventing and controlling non-point source pollution of farmland by using rice-crab coculture

A non-point source pollution, rice crab technology, applied in the directions of botanical equipment and methods, applications, rice cultivation, etc., can solve problems such as non-point source pollution in paddy fields, achieve good ventilation, and promote the growth of seedlings.

Active Publication Date: 2017-06-30
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the serious problem of non-point source pollution in existing rice fields, the present invention provides a method for preventing and controlling non-point source pollution in farmland by using rice and crab co-cropping

Method used

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  • Method for preventing and controlling non-point source pollution of farmland by using rice-crab coculture
  • Method for preventing and controlling non-point source pollution of farmland by using rice-crab coculture
  • Method for preventing and controlling non-point source pollution of farmland by using rice-crab coculture

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Effect test

Embodiment 1

[0041] Example 1: Demonstration project of rice and crab symbiosis prevention and control of farmland non-point source pollution in Eryuan County, Dali Prefecture, Yunnan Province.

[0042] In mid-March, the river crab seedlings and rice seeds were prepared. Among them, the river crab seedlings must be neat in size, robust in structure, shiny in color, free from disease and injury, and have complete appendages. The rice seeds should be selected from Chujing 28 suitable for the local natural environmental conditions in Dali City. No.

[0043] like figure 1 As shown, after the crab seedlings are purchased, centralized temporary management of river crab seedlings will be carried out from mid-March (1) until the crab seedlings can be put into rice fields in mid-June.

[0044] Matters needing attention during centralized temporary management of crab seedlings (1):

[0045] The temporary breeding place for river crab seedlings should be in a paddy field pond with convenient water ...

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Abstract

The invention discloses a method for preventing and controlling non-point source pollution of farmland by using rice-crab coculture. The method is used for solving the problem of the existing paddy fields that the non-point source pollution is serious, and river crabs are put in paddy fields in accordance with the theory that rice nourishes the crabs, the crabs nourish the rice, and the rice and the crabs are symbiotic. The method mainly comprises the steps of juvenile crab centralized temporary-culture management, rice seedling raising management, river crab paddy-field-stocking management and river crab centralized-fattening management, and a whole technical process starts from river crab offspring preparation and rice seed selection and breeding and ends with river crab packaged on-sale and rice harvesting. According to the method, the nitrogen concentration of water surface of the paddy fields can be obviously lowered, the actions of purifying water quality and preventing and treating the non-point source pollution of the paddy fields are achieved, and the size and yield of the river crabs are increased to certain extent, so that the method has remarkable environmental and economic benefits, and rice planting, river crab culture and ecological environments can win together.

Description

technical field [0001] The invention relates to a method for preventing and controlling farmland non-point source pollution by using rice and crab co-cropping, and belongs to the technical field of non-point source pollution control. Background technique [0002] Rice likes high temperature and does not have strict requirements on the soil environment for growth. Its seeds can germinate and grow in water. It is mainly planted in southern China and is one of the main food crops in my country. In the traditional rice planting mode, rice is mainly planted alone in paddy fields. However, in recent years, rice has often suffered from diseases, insects, and weeds. In order to ensure the output of rice, the use of chemical fertilizers and pesticides has also increased sharply. Chemical fertilizers and pesticides enter lakes and rivers along with rice fields, causing regional non-point source pollution and causing great harm to the local ecological environment. [0003] The scienti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G16/00A01K61/59A01G22/22
CPCA01G22/22Y02A40/81
Inventor 刘宏斌潘君廷王洪媛翟丽梅葛胜修陈安强胡万里雷宝坤
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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