Method for restoring submerged plant communities by utilizing three-dimensional plant net

Abstract

The invention provides a method for restoring submerged plant communities by utilizing a three-dimensional plant net. The method comprises the following steps: taking plants as raw materials, and weaving the three-dimensional plant net; and culturing submerged plants by utilizing the three-dimensional plant net, forming a submerged plant module, and optimizing the planting composition so as to restore the submerged plant communities in a damaged river-lake ecosystem. A submerged plant seed bank serves as a raw material, the propagule has high propagation efficiency under controllable conditions after the seeds germinate and grow to a certain length, the survival rate is higher than that of transplanting of submerged plants, and the field planting ratio of the plants is higher than that of direct dripping of the propagule. The method provided by the invention has the advantages that the raw materials are selected from aquatic plants, secondary pollution is avoided, the novel utilization pathway of the aquatic plants can be developed, and the condition that nitrogen and phosphorus loads in a water body are increased due to rot of the aquatic plants can be reduced; due to the three-dimensional plant net, the damage on the submerged plants is reduced by virtue of overall transplanting, the survival rate is improved, and planting of stonewort and other submerged plants which are slender and difficult to transplant can be facilitated; and moreover, the plant net has a certain net diameter, the plant root system can be in contact with bottom mud through meshed holes, and field planting of the plants is not influenced.

Description

technical field [0001] The invention belongs to the technical field of ecological environment restoration and relates to the planting technology of submerged plants in aquatic ecosystems. Background technique [0002] Submerged plants are an important part of the aquatic ecosystem, and play a good role in maintaining water purification in the aquatic ecosystem. Because the water and sediments of eutrophic lakes are rich in nutrients such as nitrogen and phosphorus, phytoplankton in the lake are caused. A large number of reproductions will cause water hypoxia, water quality decline, turbidity increase, and submerged plants will continue to migrate to low water levels or even disappear, eventually destroying the lake ecosystem. For the problem of lake eutrophication, it is first necessary to limit the input of exogenous nitrogen and phosphorus through hydrological management, protection and restriction policies, etc., and then apply various physical, chemical and biological me...

AI Technical Summary

Problems solved by technology

[0003] Submerged plants grow in an underwater environment. At this stage, artificial cuttings and spraying are generally used for planting. Artificial cuttings are relatively time-consuming and labor-intensive. The survival rate of spraying seeds is low, and the planting rate of spraying plants is low. It is easier to control the planting of submerged plants by using three-dimensional plant nets. Deep, overall transplantation ensures the survival rate of plants, reduces labor consumption, and improves the recovery efficiency of submerged plants

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