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Method for constructing farmland nitrogen-phosphorus ecological intercepting ditch system

A technology of farmland nitrogen, phosphorus, and construction methods, which is applied in the field of agricultural non-point source pollution prevention and control, can solve problems such as insufficient pollution interception and purification capabilities, difficulty in ensuring ecological water levels, and low technology integration, and achieve simple construction operations and post-maintenance management. and low maintenance costs, the effect of maintaining biodiversity

Inactive Publication Date: 2019-08-09
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the disadvantages of high construction cost, easy siltation of ditches, difficult guarantee of ecological water level, low technology integration and insufficient pollution interception and purification ability in the prior art, and provides a construction method of farmland nitrogen and phosphorus ecological interception ditch system

Method used

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  • Method for constructing farmland nitrogen-phosphorus ecological intercepting ditch system
  • Method for constructing farmland nitrogen-phosphorus ecological intercepting ditch system

Examples

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Effect test

Embodiment 1

[0029] A method for constructing a farmland nitrogen and phosphorus ecological interception ditch system, such as Figure 1-2 shown, including engineering measures and ecological measures,

[0030] The engineering measures include the following measures: a ditch 4 is provided, and a water level regulating mud pool 1 is provided at the farmland outlet leading to the ditch 4; a low-level ecological dam 2 is set at an interval of 125m at the bottom of the ditch 4; 2 A sunken ecological purification pool 3 is set at the bottom of the ditch downstream;

[0031] The ecological measures include the following measures: plant dominant submerged plants 41 at the bottom of the ditch 4; add benthic molluscs 42 to the ditch 4;

[0032]The crest elevation of the low-level ecological dam 2 is equal to the elevation of the bottom of the ditch at the position of the upper-level low-level ecological dam. The low-level ecological dam 2 is formed by stacking single-layer or multi-layer ecologica...

Embodiment 2

[0046] A method for constructing a farmland nitrogen and phosphorus ecological interception ditch system, such as Figure 1-2 shown, including engineering measures and ecological measures,

[0047] The engineering measures include the following measures: a ditch 4 is provided, and a water level regulating mud pool 1 is provided at the farmland outlet leading to the ditch 4; a low-level ecological dam 2 is set at an interval of 50m at the bottom of the ditch 4; 2 A sunken ecological purification pool 3 is set at the bottom of the ditch downstream;

[0048] The ecological measures include the following measures: plant dominant submerged plants 41 at the bottom of the ditch 4; add benthic molluscs 42 to the ditch 4;

[0049] The crest elevation of the low-level ecological dam 2 is equal to the elevation of the bottom of the ditch at the position of the upper-level low-level ecological dam. The low-level ecological dam 2 is formed by stacking single-layer or multi-layer ecologica...

Embodiment 3

[0063] A method for constructing a farmland nitrogen and phosphorus ecological interception ditch system, such as Figure 1-2 shown, including engineering measures and ecological measures,

[0064] The engineering measures include the following measures: a ditch 4 is provided, and a water level regulating mud pool 1 is provided at the farmland outlet leading to the ditch 4; a low-level ecological dam 2 is set at every 200m interval at the bottom of the ditch 4; 2 A sunken ecological purification pool 3 is set at the bottom of the ditch downstream;

[0065] The ecological measures include the following measures: plant dominant submerged plants 41 at the bottom of the ditch 4; add benthic molluscs 42 to the ditch 4;

[0066] The crest elevation of the low-level ecological dam 2 is equal to the elevation of the bottom of the ditch at the position of the upper-level low-level ecological dam. The low-level ecological dam 2 is formed by stacking single-layer or multi-layer ecologic...

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Abstract

The invention relates to the field of agricultural non-point source pollution prevention, and discloses a method for constructing a farmland nitrogen-phosphorus ecological intercepting ditch system. The method comprises engineering measure and ecological measure, wherein the engineering measure comprises: arranging a ditch (4), arranging a water level regulating mud accumulating pool (1) at the position of a farmland water discharge port, arranging a low-position ecological dam (2) on the bottom portion of the ditch (4), and arranging a sinking type ecological purification pool (3) on the bottom portion of the ditch on the downstream of the low-position ecological dam (2), and the ecological measure comprises: planting dominant submerged plants (41) on the bottom portion of the ditch (4),adding benthic mollusca (42) to the ditch (4), and planting herbaceous plants capable of preventing and controlling plant diseases and insect pests on the ditch (4). According to the present invention, by matching the ecological measure and the engineering measure, the erosion loss and ditch siltation of farmland can be prevented, a certain ecological water level can be maintained in the ditch, the pollution intercepting capacity of the ditch to agricultural runoff can be strengthened, the biodiversity of the farmland ditch can be easily maintained, and the implementing cost is low.

Description

technical field [0001] The invention relates to the field of prevention and control of agricultural non-point source pollution, in particular to a method for constructing a farmland nitrogen and phosphorus ecological interception ditch system. Background technique [0002] The prevention and control of farmland non-point source pollution has become an important part of my country's current water pollution prevention and control work, and has also become a major issue for the sustainable development of my country's agriculture. The "Water Pollution Prevention and Control Action Plan" issued by the State Council in April 2015 and the "National Agricultural Sustainable Development Plan (2015-2030)" jointly issued by the Ministry of Agriculture, the National Development and Reform Commission, the Ministry of Science and Technology and other national ministries and commissions in May 2015 , clearly proposing to comprehensively strengthen the prevention and control of agricultural...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34E02B11/00
CPCC02F3/327C02F3/34C02F2201/007E02B11/00
Inventor 曹玉成徐坚蔡飞翔张肖剑庄倩倩胡玉梅
Owner ZHEJIANG FORESTRY UNIVERSITY
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