Method for nearly-natural restoration of rat-damage deteriorated grassland

Abstract

The invention relates to the technical field of environmental protection and greening and particularly relates to an ecological revetment building method applicable to northern grassland regions. Themethod comprises the following steps: (1) before the approach of a raining period of a grassland, crushing collected cattle manure, and then, uniformly and extensively broadcasting the cattle manure powder to the grassland to be restored; (2) in a cold season, i.e., August to September of the grassland, broadcasting lolium perenne seeds and elymus dahuricus seeds which are in the ratio of 3: 7 into the treated rat-damage deteriorated grassland, and carrying out yak grazing utilization; and (3) in a regreening season of the ensuing year, resowing mixed young seedlings of lolium perenne and elymus dahuricus to molehills cave entrances, and carrying out normal management. According to the method disclosed by the invention, the traditional grassland resowing mode that the rat-damage deteriorated grassland is ploughed by using a disc harrow is changed, and forage grass seeds are broadcast onto the grassland and are buried in the land by using treading of hooves of yaks through yak grazing;and through a yak hoof ploughing mode, the disturbance to an ecological environment of the grassland is relatively low, meanwhile, labor and material resources are saved, and the cost is relatively low.

Description

technical field [0001] The invention relates to the technical field of environmental protection and greening, in particular to a method for near-natural restoration of degraded grassland caused by rodents. Background technique [0002] Climate change and irrational use of grassland have caused more than 90% of grassland in my country to degrade to varying degrees. With the aggravation of grassland degradation and desertification, the area of ​​grassland rodent damage in my country is increasing year by year. Rodents play an important role in the consumer subsystem of the grassland ecosystem. Grassland rodent infestation is not only the result of grassland degradation, but also the incentive to aggravate grassland degradation. Grassland rodent infestation is characterized by a wide range of occurrence, multiple spots, and high density. A huge number of pests not only gnaw on grass leaves and roots, but also dig holes and turn over the soil, resulting in a large area of ​​"bl...

AI Technical Summary

Problems solved by technology

The control method of fence enclosure takes a long time. Although measures such as loosening the grassland can increase the vegetation coverage to a certain extent, they basically have little effect on the degraded grassland caused by rodents.