Method for managing pool eutrophication by planting rice

A technology for eutrophication and ponds, applied in chemical instruments and methods, botany equipment and methods, rice cultivation, etc., can solve problems such as pond tail water pollution control

Active Publication Date: 2015-04-22
SHANGHAI OCEAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned current situation of pond culture and the shortcomings of high-density culture in ponds, the purpose of the present invention is to control the eutrophication of ponds by plant

Method used

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  • Method for managing pool eutrophication by planting rice
  • Method for managing pool eutrophication by planting rice
  • Method for managing pool eutrophication by planting rice

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Embodiment

[0082] 1. Selection and construction of rice planting ponds: convenient drainage, no pollution of water quality, convenient transportation, and convenient electricity consumption; the depth of the pond is 1.5 to 1.7 meters, and there is a slope connected to the pond ridge inside, with a slope ratio of 1:1.12 and an area of ​​0.3 ~0.5 hectares is the best, the bottom of the pond and the platform are preferably clay soil; a platform is built in the middle of the pond, accounting for 65% of the pond area, the cross section is trapezoidal, surrounded by a ring ditch, the depth of the ditch is the same as the height of the platform, both are 1 meter. The water inlet and outlet are located at both ends of the pond, and a 100-mesh polyethylene screen is placed at the water inlet. The pond is equipped with microporous bottom aeration equipment. The ridge of the pool is made of cement and has a long U shape, which saves the cost of building anti-escape facilities virtually, and the eff...

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Abstract

The invention relates to the field of water purification, in particular to a method for managing pool eutrophication by planting rice. The method for managing pool eutrophication by planting the rice includes the following steps: a pool is aired and cleaned, and pests in the pool are killed; organic fertilizers for fermentation treatment are applied in middle of March; food organisms are started to be cultivated at the beginning of April; the food organisms are placed into the pool; reed rice seedlings are started to be cultivated at the beginning of May; rice seedling transplanting is started to be carried out in the middle of May; urea is applied after rice seedling transplanting is carried out; large-specification juvenile eriocheir sinensis, odontobutis obscura fries and an appropriate number of aristichthysnobilis fishes are input in the middle of June; compound fertilizers are applied at the beginning of July; harvesting is started to be carried out in the middle of November. By means of the method, rice is planted in the pool, the eriocheir sinensis and the odontobutis obscura which are high in economical value are bred in a mixed mode, aquatic products which are high in quality and high in economic value are produced while the water is purified, the price is higher the price of river crabs in the pool, ecological rice is achieved, and the pool cultivation comprehensive benefit is further improved.

Description

technical field [0001] The invention relates to the field of water quality purification, in particular to a method for controlling eutrophication of ponds by planting rice and its application. Background technique [0002] With the improvement of freshwater pond culture technology and the increase of consumer market demand, higher requirements have been put forward for the fish output per unit water body. Due to the limited self-purification ability of pond culture water, a large amount of feed input and the accumulation of metabolites of farmed animals lead to aggravation of endogenous and exogenous pollution. The random discharge of eutrophic aquaculture wastewater poses a pollution threat to the external water environment. The environmental problems of pond aquaculture have become one of the important restrictive factors for the sustainable development of freshwater aquaculture in China. The importance of exploring a healthy ecological aquaculture model with environmental...

Claims

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Application Information

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IPC IPC(8): A01G16/00A01K61/00C02F3/32A01G22/22
CPCA01G22/22A01K61/59C02F3/32Y02A40/81Y02W10/10Y02W10/37
Inventor 马旭洲吴永安徐育强陆文荣徐锡虎唐建东王武
Owner SHANGHAI OCEAN UNIV
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