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Construction method of compound community of ecological ditch revetment plant

A technology of ecological ditches and construction methods, which is applied in the fields of chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve the problems of difficulty in guaranteeing efficient decontamination of ditches every year, reduction of decontamination ability of plants, ditches In order to solve problems such as poor landscape effect, it can achieve the effect of maintaining stability, improving decontamination effect, and avoiding secondary pollution

Inactive Publication Date: 2019-01-25
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the growth season of these plants is mostly spring and summer, and they are mostly in a dormant state in autumn and winter, which not only reduces the decontamination ability of the plants in autumn and winter, but also causes secondary pollution due to a large amount of litter that is almost worthless for cutting. The annual efficient decontamination is difficult to guarantee
At the same time, the landscape effect of the ditch is poor

Method used

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Examples

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Embodiment Construction

[0025] This technology was implemented from June 2016 to April 2017 in a farmland drainage ditch in a modern agricultural park in Zhenjiang New District, Jiangsu Province. The length is about 2m, the annual maximum water level can reach 1 / 2 of the slope protection, and the annual minimum water level is 0 (no water in the ditch), that is, the annual water level drop accounts for 1 / 2 of the total slope length, and the length is 1m. The ditch receives sewage from the surrounding 100 mu of farmland. Utilize this technology to build a composite community of Sorrel-Ophiopogon japonicus-Ophiopogon japonicus, and build ditches to implement nitrogen and phosphorus interception ecological ditches. The construction process of this composite community is as follows:

[0026] (1) In June and August 2016, the herbicide glyphosate was sprayed to remove weeds in slope protection.

[0027] (2) After cleaning up the slope protection plant residues at the end of October, level the slope surface...

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PUM

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Abstract

The invention discloses a construction method of a compound community of an ecological ditch revetment plant, and relates to the technical field of resource and environment protection. The construction method is mainly used for improving the sewage purification and landscaping functions of an ecological ditch, belonging to the technical field of resource environment and protection. The method comprises the following steps: selecting an appropriate ecological ditch according to the interannual variation of the blowdown water level of an ecological interception ditch for nitrogen and phosphorusin farmland sewage; dividing a revetment into three zones along a direction parallel to the river channel from bottom to top, and planting phalaris arundinacea, ophiopogon japonicus and oxalis corymbosa respectively, so as to construct an oxalis corymbosa-ophiopogon japonicus-phalaris arundinacea compound community on the ecological ditch revetment. The ecological ditch provided by the invention not only can realize a good annual purification complementary effect with an ecological ditch under conventional vegetation, but also can obviously improve the landscaping effect and the economic effect of the ecological ditch.

Description

technical field [0001] The invention relates to the technical field of resource and environment protection, in particular to a method for constructing an ecological ditch slope protection plant complex community with three plants: safflower sorrel, ophiopogon japonicus and weed grass. Background technique [0002] Ecological ditch is a farmland sewage treatment project composed of farmland drainage ditches and plants growing on their base and slope protection. It has been regarded as one of the most effective measures for agricultural non-point source pollution control. It can remove nitrogen and phosphorus from farmland discharge pollution. The rate can usually reach above 60% and 64% respectively. Among them, the vegetation, which is the main component of the ecological ditch, plays an extremely important role in the process of nitrogen and phosphorus interception mainly through the absorption of roots and the degradation of rhizosphere microorganisms. [0003] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCC02F3/32
Inventor 付为国张进权刘永茂
Owner JIANGSU UNIV
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