Method for returning farmland to reconstruct deyeuxia angustifolia wetlands

Abstract

The invention discloses a method for returning farmland to reconstruct deyeuxia angustifolia wetlands. The method includes the steps that 1, field preparation is carried out in mid-to-late July of thecurrent year, and a rotary cultivator is adopted for operation, wherein the ploughing depth is 10-20 cm; 2, 5-8 days before transplanting of deyeuxia angustifolia plants, the flattened abandoned farmland is irrigated with water, wherein the infiltration depth of soil is 5-10 cm; 3, deyeuxia angustifolia swamp meadow wetlands are adopted as the main parts, wherein the water content of the soil ofthis kind of wetlands is 70%, seasonal ponding to the earth's surface is achieved, the digging area of one sample block is 0.16-0.25 m<2>, the spacing between every two sample blocks is at least 1 m,the digging depth is 5-20 cm, and digging is carried out in mid-to-late August; 4, a sample cutting device is adopted for dividing the dug deyeuxia angustifolia sample blocks into multiple small blocks which are suitable for transplanting, wherein the area of each small block is 0.006-0.01 m<2>; 5, transplanting is carried out in early September, a manual insertion mode is adopted for planting, and the small deyeuxia angustifolia blocks cut in step 4 are planted into the soaked soil, wherein the transplanting depth is 5-15 cm; 6, the line spacing is set from 25 cm to 50 cm; 7, maintenance management in the later period is carried out and mainly includes periodic irrigation, and an alternate drying and wetting mode is adopted.

Description

technical field [0001] The invention relates to a method for returning cultivated land to rebuilding the wetland of P. chinensis, and belongs to the technical field of methods for rebuilding the wetland of P. chinensis. Background technique [0002] Wetlands are an important part of the terrestrial ecosystem, known as the "kidney of the earth", the "storage" and "purifier" of water resources, and the habitat, migration, and overwintering necessary for many rare and endangered species, especially endangered and rare waterfowl. It has multiple functions such as protecting biodiversity, regulating runoff, improving water quality, and regulating microclimate. [0003] However, with the needs of economic and social development, human activities represented by agricultural reclamation and grazing have led to a sharp decline in the wetland area. Taking the Sanjiang Plain wetlands as an example, the area of ​​natural wetlands has decreased from 5.34 million hectares in the early da...

AI Technical Summary

Problems solved by technology

Although China started relatively late in the study of wetland ecological restoration and reconstruction, it has developed rapidly, especially in recent years, the research on ecological restoration and reconstruction of lake wetlands, river wetlands, urban wetlands, and oil field polluted wetlands has developed rapidly. Some effective work has been carried out, but there is still a lot of work to be done on wetland ecological restoration and reconstruction, especially the lack of mature and applicable key technologies and methods in wetland reconstruction