An optimal allocation method of forest and grass for restoration of middle and young degraded shelterbelts in saline-alkali land

Abstract

The invention provides a forest and grass optimal allocation method for the restoration of middle and young degraded shelterbelts in saline-alkali land, and mainly relates to the field of shelterbelt restoration. An optimal allocation method for forest and grass for the restoration of degraded shelter forests in saline-alkali land, which is applied to the restoration of degraded forest stands caused by secondary soil salinization, severe soil failure and other reasons in middle (young) age shelter forests, and is realized by the following steps: land preparation: Before the soil freezes from the end of October to the beginning of November, the trees in the degraded shelterbelt shall be ploughed to prepare the soil. Arbor, shrub and grass configuration: shrubs and grasses shall be planted in the degraded shelterbelt to form a three-dimensional space where trees, shrubs and grasses are mixed. Optimize the configuration structure; shrub and grass planting technology: including shrub Tamarix planting technology and NyPa forage planting technology; management of shrubs and grasses after planting. The beneficial effects of the present invention are as follows: the present invention can effectively reduce soil salinity content, significantly improve soil physical properties, increase soil fertility, promote tree growth, and achieve the purpose of restoring degraded shelter forests.

Description

technical field [0001] The invention mainly relates to the field of shelter forest restoration, in particular to a forest and grass optimization configuration method for the restoration of middle and young degraded shelter forests in saline-alkali land. Background technique [0002] Shelter forests in saline-alkali areas are affected by factors such as low soil fertility, shallow groundwater table, high salinity, insufficient precipitation, and high evapotranspiration ratio, resulting in secondary soil salinization and human disturbance, which accelerate the decline and aging of shelterbelts. process, forming a part of degraded forests. At the same time, limited by factors such as economic and social development and technological conditions at that time, the saline-alkali land shelterbelt generally had the phenomenon of single tree species and simple structure, which could not form a stable stand structure, resulting in poor ability to resist the saline-alkali land environme...

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Problems solved by technology

[0004] In order to solve the deficiencies of the prior art, the present invention provides a method for optimizing the configuration of forest and grass for the restoration of medium and young degraded shelterbelts in saline-alkali land, which overcomes the problems of single, high cost, difficult operation, and cumbersome procedures in the existing saline-alkali land shelterbelt restoration technology. Provides an optimal allocation method of forest and grass that has obvious repair effect and can be popularized and applied in large areas in production

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