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

A technology for degraded grassland and rodent damage, applied in botany equipment and methods, lawn growth, horticulture, etc., can solve the problems of long time consumption and little effect of rodent damage on degraded grassland, and achieve small disturbance of grassland ecological environment and low cost , the effect of saving manpower and material resources

Inactive Publication Date: 2018-10-16
LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The control method of fence enclosure takes a long time. Although measures such as loosening the grassland can increase t

Method used

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Embodiment 1

[0029] Embodiment 1: The present invention implements the case in Luqu County, Gannan Prefecture

[0030] Step 1. In mid-to-late May, the grassland in Luqu County has basically turned green and will soon enter the rainy season. The collected yak manure is crushed and spread evenly and widely on the degraded grassland caused by rodents. The productivity of this rodent-infested degraded grassland is extremely low, the yield of dry grass is about 8 kg / mu, and the edible forage grass is less, accounting for only 21%. Artemisia, Gentiana chinensis, Gentiana twisting, Lion's tooth chrysanthemum, Microporus, and Aconitum lurui are the main dominant plants. The density of rat mounds is 867 / mu, and the phenomenon of soil layer stripping is relatively serious.

[0031] Step 2. In the first ten days of June, sow the seeds of ryegrass and Elymus chinensis in the ratio of 3:7 on the degraded grassland treated in step 1 and use it for grazing yaks. The sowing amount is 18.7 kg / mu. The requ...

Embodiment 2

[0036] Embodiment 2: the implementation case of the present invention in Tianzhu County

[0037] Step 1. In the first ten days of May, the grassland in Tianzhu County has basically turned green and will soon enter the rainy season. The collected yak manure is crushed and spread evenly and widely on the degraded grassland caused by rodents. Due to the frequent activities of rodents in this degraded grassland, the local microenvironment has changed, the soil layer has been stripped seriously, the biodiversity has declined, and the original vegetation types have been completely changed. According to the grassland survey data in August of last year, the plant species in the sample plot are mainly microporia, fenugreek, Polygonum villosa, Oxytropis chinensis, Gansu thorn bean, Potentilla velvet, and mugwort, etc. The dominant species, the vegetation height is only about 6cm, the proportion of bald spots is relatively high, the vegetation coverage is extremely low, only 7%, the abov...

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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...

Claims

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Application Information

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IPC IPC(8): A01G20/00
CPCA01G20/00
Inventor 崔光欣徐长林高雅琴王晓力路远王春梅
Owner LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS
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