Ecological ditch constructing method for controlling nitrogen and phosphorus in farmland drainage

An ecological ditch and farmland drainage technology, applied in soil drainage, chemical instruments and methods, applications, etc., can solve the problems of poor water erosion resistance, low ability to intercept and purify nitrogen and phosphorus, and achieve comprehensive ability improvement and ability to intercept and purify nitrogen and phosphorus High, increase the effect of removal rate

Inactive Publication Date: 2013-03-13
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
View PDF16 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of poor water erosion resistance and low ability to intercept and purify nitrogen and phosphorus in the existing ecological ditch construction method for co

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ecological ditch constructing method for controlling nitrogen and phosphorus in farmland drainage
  • Ecological ditch constructing method for controlling nitrogen and phosphorus in farmland drainage
  • Ecological ditch constructing method for controlling nitrogen and phosphorus in farmland drainage

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0020] Specific embodiment one: a kind of ecological ditch for controlling nitrogen and phosphorus in farmland drainage of the present embodiment is carried out according to the following steps:

[0021] 1. Set slope protection support 4 on the ditch wall of the farmland drainage ditch, and plant plants in the support grid for slope protection;

[0022] 2. Plant submerged plants and emergent plants at the bottom of farmland drainage ditches;

[0023] 3. At the junction of the ditch wall and the bottom of the farmland drainage ditch, drive into the bottom of the ditch every 1 to 2m the porous PVC pipe 5 with the outer wall wrapped with gauze well bottom cloth. One end of pipe 5 driven into the bottom of the ditch is sealed;

[0024] 4. Arrange an ecological interception matrix dam every 100-150m in the farmland drainage ditch. The ecological interception matrix dam is fixed by the grid plate 1 located at both ends of the ecological interception matrix dam. 30cm, the bottom of...

specific Embodiment approach 2

[0026] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one, the slope protection bracket 4 is made of wicker or crop straw, and its grid side length is 20-30cm. Other steps and parameters are related to the specific implementation Method 1 is the same.

specific Embodiment approach 3

[0027] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the plants planted in the scaffolding grid in step one are one or more of reeds, wild rice stems, cattails, chapters, sedges and water spinach Any combination among them, other steps and parameters are the same as those in Embodiment 1 or 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides an ecological ditch constructing method for controlling nitrogen and phosphorus in farmland drainage and relates to an ecological ditch constructing method for the farmland drainage. The purpose of the invention is to solve technical problems of poor water flushing resistance and low nitrogen and phosphorus intercepting and purifying capacity in the traditional ecological ditch constructing method for controlling nitrogen and phosphorus in the farmland drainage through arranging an ecological interceptor; and the ecological ditch constructing method provided by the invention is carried out in the following steps: first, planting plants on ditch walls and at ditch bottoms; and then arranging PVC pipes with holes at junctions of the ditch walls and the ditch bottoms; and arranging matrix intercept dams capable of replacing matrices at the ditch bottoms. The ecological ditch constructing method provided by the invention has the advantages as follows: without affecting normal drainage, the hydraulic retention time is prolonged, excessive water flushing is resisted, and soils in the ditches are uneasy to slip; compared with the traditional ditch, the comprehensive nitrogen and phosphorus purifying capacity of the ecological ditch is enhanced by 6-15 %; the capacity of intercepting and purifying nitrogen and phosphorus is strong; moreover, filled matrix of the matrix dam is solid wastes, so that a purpose of controlling waste by waste is achieved; and the ecological ditch constructing method provided by the invention can be applied to the field of environmental pollution prevention and water and soil conservation.

Description

technical field [0001] The invention relates to a method for constructing an ecological ditch for farmland drainage. Background technique [0002] In agricultural non-point source pollution, the pollution caused by nitrogen and phosphorus loss from farmland cannot be ignored. Farmers use a large amount of inorganic fertilizers, but the low utilization rate of nitrogen and phosphorus absorbed by crops leads to nitrogen and phosphorus pollution in farmland. With the growth of the global population, people's demand for food and fiber is increasing day by day. The limited arable land drives producers to increase the input of inorganic fertilizers. However, due to the low absorption and utilization rate of crops, the farmland soil is rich in high concentrations of nitrogen and phosphorus, especially Nitrogen and phosphorus in paddy field water in paddy field areas are under high concentration conditions. Under the conditions of artificial drainage and rainstorm runoff, a large am...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E02B11/00C02F3/32
CPCY02W10/10
Inventor 阎百兴张燕祝惠徐莹莹
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap