Recovery method for western degraded grassland in Songnen plain

Abstract

The invention discloses a recovery method for western degraded grassland in Songnen plain, relates to a degraded grassland vegetation recovery method, and belongs to the field of grassland ecological environment management. The invention aims to solve the technical problems of serious grassland degradation, slow grassland recovery speed and slow grassland growth of the western grassland in the Songnen plain. The recovery method for the western degraded grassland in the Songnen plain comprises the following steps: after the degraded grassland to be recovered turns green, applying 10kg of pure nitrogen and spraying 20-30ml of biostimulant according to the proportion of 10kg of pure nitrogen and 20-30ml of biostimulant per mu. Nitrogen fertilizer is used as a main nutrient to supplement soil nutrient insufficiency caused by long-year cutting of the grassland, besides, biostimulant is assisted to restore and promote growth of the grassland, net productivity of the grassland which is cut after being applied for 3 months can reach 145-186 kg per mu and is higher than that of the grassland without the nutrient and the biostimulant by 60 kg per mu, and the degraded grassland recovery effect is obvious.

Description

technical field [0001] The invention relates to a method for restoring degraded grassland vegetation, which belongs to the field of grassland ecological environment management. Background technique [0002] Northeast China is an important green ecological barrier and an interlaced zone of agriculture and animal husbandry in my country's main grain production areas. The grassland area of ​​the Songnen Plain is 1.87 million hm 2 , has important ecological and economic value. However, due to overgrazing and irrational utilization in recent years, nutrients in the grassland ecosystem have not been replenished after years of mowing. The degraded grassland in the west of the Songnen Plain has soil compaction, severe vegetation degradation, decreased coverage, reduced productivity, changes in the structure of the grassland ecosystem, and threats to biodiversity. The imbalance has restricted the development of the local social economy. How to restore degraded grassland, increase ...

AI Technical Summary

Problems solved by technology

However, due to overgrazing and irrational utilization in recent years, nutrients in the grassland ecosystem have not been replenished with years of mowing

The degraded grassland in the west of the Songnen Plain has soil compaction, severe vegetation degradation, decreased coverage, reduced productivity, changes in the structure of the grassland ecosystem, and threats to biodiversity. Imbalance has restricted the development of local social economy