Reseeding ecological restoration method for degraded grassland

Abstract

The invention provides a degraded grassland reseeding ecological restoration method. Comprising the following steps: 1) selecting reseeding grass seeds; 2) applying a fertilizer; (3) no-tillage reseeding; and 4) management after sowing. According to the method, annual and perennial pasture, leguminous and gramineous pasture, deep-root and shallow-root pasture, photophilous pasture and lucifugal pasture are selected for matching and mixed sowing, the yield advantages of different pasture varieties in different succession stages and the complementarity of the pasture varieties in the aspect of water and nutrient utilization can be brought into full play, the high yield and stable yield of the improved degraded grassland are promoted, and the quality of the improved degraded grassland is improved. The nutritional value and quality of pasture are improved. No-tillage reseeding is adopted, the ploughing depth is only located on the surface layer of the soil, and along with completion of reseeding, the pressing process is followed, so that effective implantation of the seeds is guaranteed, and damage to native vegetation is reduced to the minimum. In addition, a straw mat is covered on a part of areas which are seriously degraded and small in native vegetation coverage, so that the soil moisture content is effectively improved, high-temperature damage of summer high temperature to reseeding grass seedlings is reduced, and the survival rate of the reseeding seedlings is remarkably increased.

Description

technical field [0001] The invention relates to a method for reseeding ecological restoration of degraded grassland, and belongs to the field of ecological restoration of degraded grassland. Background technique [0002] Re-seeding is to sow some forages with strong adaptability and high forage value on the grassland without destroying or less destroying the original vegetation to improve the structure of grassland plant community, restore local bare land and degraded land, and increase surface coverage. It is an important semi-artificial and near-natural restoration measure for the restoration and improvement of degraded grassland. Reseeding is an effective way to improve degraded grasslands. Both foreign and domestic countries attach great importance to the improvement of natural grasslands. At the same time, it has attracted much attention because of its simple operation, low investment and quick effect. [0003] In the past practice, deep ploughing or shallow ploughing ...

AI Technical Summary

Problems solved by technology

Deep plowing or shallow plowing will easily lead to the destruction of surface soil structure, resulting in increased surface evaporation and surface desertification, which is not conducive to the sustainable use of grassland resources and the protection of ecosystem functions.

In addition, in practice, if the selection of re-sowing grass seeds, re-sowing time and technical mastery are not appropriate, it is easy to cause low ecological germination rate of re-sowed grass seeds, seedlings die, and the effect of re-sowing is not significant enough, so the promotion and application are limited.

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