Method for treating eutrophication water body by herbaceous plant waterborne planting

Abstract

The invention discloses a water cultivation method of herbs to treat eutrophic water, comprising the steps: PVC plastic tubes are taken as a frame, a nylon net is bound on the frame to form a floating bed; seeds of grass species are soaked for accelerating germination at a room temperature of 28-32 DEG C, the seeds after germination are sowed in a seedling bed formed by a PE membrane with even eyelets to keep the moisture content and temperature, facilitating the germinated seeds to take root and grow; the seedling bed is put on the floating bed that floats in the eutrophic water after the roots of the grass species grow into three-leaf seedlings and come out through the eyelets of the PE membrane, then nutrient salts of nitrogen and phosphors, etc. in the water body are absorbed by the herbs, meanwhile, allelochemicals are secreted to inhibit the propagation of algae, so as to realize in-situ bioremediation of the eutrophic water and promote feed production when improving the water quality. The whole treating method realizes a good circulation system between 'environment-plant-animal-human'.

Description

Technical field [0001] The invention relates to a method for treating eutrophic water bodies, in particular to a method for treating eutrophic water bodies with aquatic herb plants. Background technique [0002] With the continuous development of society and the improvement of people's living standards, the problem of eutrophication of water bodies in my country, especially in economically developed regions, is serious, and there is a problem of water quality-type water shortage. The main reason for the formation of eutrophication in the water body is the high concentration of nutrients such as nitrogen and phosphorus in the water body. According to a survey conducted by the Ministry of Water Resources of China in 2004, the nutritional status of 49 lakes was evaluated, 17 lakes were in a mesotrophic state, and 32 lakes were in an eutrophic state. Among the five major freshwater lakes, Lake Tai, Hongze Lake, and Chao Lake have reached eutrophication levels. Although Poyang Lake an...

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Problems solved by technology

[0004] Most of the floating bed carriers currently used are made of thick white foam plastic boards, which are more suitable for large aquatic flowers, but not suitable for herbaceous plants, and waste materials are easy to cause secondary pollution to the environment

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