Method for safe over-summering of cress on floating bed

Abstract

The invention relates to a method for safe over-summering of cress on a floating bed. A traditional medium planting approach is combined with a floating bed planting approach, safe over-summering of the cress on the floating bed is ensured by forming a cress root conservation area, and meanwhile the roots of the cress in the conservation area naturally germinate in the next year, so that the reseeding link is saved. According to the method, planting pots are arranged on the floating bed, media in the planting pots consist of ceramsite and loam, and the ceramsite and the loam are matched with each other to form the root conservation area for over-summering of the cress and germination of the roots in the next year. The provided method for safe over-summering of the cress on the floating bedsolves the problems that since cress roots planted by means of the floating bed planting approach are lost or die due to water flow disturbance, bird and fish feeding and water icing in winter, the system purification capability is low, and the floating bed management and maintenance cost is increased.

Description

technical field [0001] The invention relates to a method for safely surviving summer on a cress floating bed, and belongs to the technical field of water ecological purification and restoration. Background technique [0002] Ecological floating bed is an important constructed wetland technology. Since it came out and put into use in Germany in the 1980s, it has been widely praised for its advantages in the treatment of eutrophic water bodies, and has been adopted by more and more environmental protection companies. and government approval. At this stage, it has been widely used in pollution control of water bodies including lakes, ponds, urban rivers, etc., and has achieved good results in sewage treatment and ecological restoration. [0003] In spring and summer, because the temperature rises and the growth environment is good, the plants in the floating bed can grow rapidly, and the purification effect of the system is good. In autumn and winter, the plants in the floatin...

AI Technical Summary

Problems solved by technology

However, the results of the research found that the following problems have not been solved. Cress is cool in nature and avoids heat and drought. According to the growth habit, the leaves will naturally fall and die in September-October every year. Compared with the traditional substrate planting method, most of the floating bed plants are fixed or floating in the floating bed planting method. On the surface of the water body, the root system is in direct contact with the water body, and there are significant differences in the plant growth environment. Due to the fall of the water celery stem and leaves, a large part of the water celery root system is difficult to attach to the floating bed due to water flow disturbance and scouring. At the same time, some attached rhizomes are due to Birds, fish and shrimps in spring and summer, and winter low temperature damage caused most of the losses, resulting in the need to replant seedlings in the coming year

At the same time, replanting seedlings will have a large part of the loss due to the feeding of fish and shrimp, which will indirectly increase the cost of operation and maintenance.

[0006] Existing research shows that the construction of cress ecological floating beds has certain applications in water body restoration. There are related patents on the structure and function improvement or enhancement of cress floating beds. However, how to ensure the safety of using cress floating beds in water ecological purification Oversummer, it can germinate naturally in the next year to save maintenance costs; and on this basis, the combination of different substrates to further ensure that the root system can tolerate low temperature and animal feeding has not yet been involved.

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