Ecological ditch for increasing utilization rates of N and P in farmland by controlling agricultural non-point source pollution

A technology of agricultural non-point source pollution and ecological ditches, which is applied in the field of non-point source pollution control and biological treatment of water pollution, and can solve the problems of lack of universal availability, sustainable utilization, and large footprint

Active Publication Date: 2013-05-08
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0008] In order to solve the problems of large land occupation and lack of universal availability and sustainable utilization in the above-mentioned prior art, the present invention provides an intensive use of land, which can control agric

Method used

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  • Ecological ditch for increasing utilization rates of N and P in farmland by controlling agricultural non-point source pollution
  • Ecological ditch for increasing utilization rates of N and P in farmland by controlling agricultural non-point source pollution
  • Ecological ditch for increasing utilization rates of N and P in farmland by controlling agricultural non-point source pollution

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Embodiment 1

[0028] The ecological ditch for controlling agricultural non-point source pollution and improving N and P utilization rate of farmland according to the present invention is applied to an agricultural non-point source pollution interception project in a certain place for experimental research. The research area is about 2000 meters long and 1000 meters wide, with a total area of ​​2.00 square kilometers. According to relevant studies, the average thickness of water and soil loss in the test area is 0.40cm / a, the average loss is 5000t / (hm.a), the average loss of phosphorus is 2.23t / (hm.a), and the average loss of nitrogen is 7.90t / (hm.a). According to the survey, the water level of ditches in this area is 0.3-0.4 meters in dry season and 0.8-1.2 meters in wet season.

[0029] Such as figure 1 , figure 2 and image 3 As shown, the present invention designs an ecological ditch that is used to control agricultural non-point source pollution and improves the utilization rate of...

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Abstract

The invention discloses an ecological ditch for increasing utilization rates of N and P in a farmland by controlling agricultural non-point source pollution. According to the ecological ditch for increasing utilization rates of N and P in the farmland by controlling agricultural non-point source pollution, aiming at the characteristics of the agricultural non-point source pollution, by using an ecology principle and a biological characteristic, through increasing the biomass of a ditch wetland ecosystem and using a synergistic effect of a system, water body pollutants are blocked, degraded, absorbed and utilized so as to achieve the purposes of reducing the pollutants discharged from a water body and increasing the utilization rates of the N and the P in the farmland.

Description

Technical field: [0001] The invention belongs to the technical field of non-point source pollution control and biological treatment of water pollution, and in particular relates to an ecological ditch for controlling agricultural non-point source pollution and improving the utilization rate of N and P in farmland, which is suitable for farming areas with low N and P utilization rates and serious agricultural pollution . Background technique: [0002] With the development of agriculture, the application of chemical fertilizers and pesticides has increased, and the proportion of non-point source pollution load has increased year by year. It has become one of the main sources of water pollution and has become a serious environmental problem that exists in the world today. Research on pollution technologies and measures has become a major environmental issue that has attracted much attention. Compared with the control of point source pollution, it is more difficult to control n...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34E02B5/02E02B13/00A01G9/02A01G1/00A01K61/00
CPCY02A40/81Y02W10/10
Inventor 黄燕程炯刘晓南赵宇
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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