Purple massif forestation planting grass para position allocation and mixed cultivation method

Abstract

The invention provides a method of para position allocation and ,mixing cultivation of planting grass for afforestation on purple hills, which comprises the steps of: (1) division of land types: purple hilly lands are divided according to the acidity, basicity and lithology of the lands, soil erosion, soil thickness and terrain features; (2) selection of species of trees and grasses: species of trees and grasses which are applicable to grow in varied purple lands are selected according to the selection experiments of the different types of species of trees and grasses used for afforesting of purple hilly lands, and fitting degrees of the species of trees and grasses to each kind of land are specified; (3) para position allocation of the species of trees and grasses with the kinds of the lands: corresponding species of trees and grasses are allocated on the most suitable or relatively suitable lands; (4) mixed disposition of trees: different optimized disposition modes for purple hilly mixed forests are selected according to the mixed experiments of the trees for different kinds of lands of hills and hilly areas with purple soil, and trees and bushes, legumes and non-legumes, species of trees of deep root system and shallow root system, horizontally growing type and vertically growing type, soil fixing type and soil improved type are mixed. The method of the invention adopts trees, brushes and grasses to be planted on the most suitable and relatively suitable hills with purple soil, thus realizing precise para position allocation, high survival rate being up to over 90 percent and greatly accelerating the growing speed and forest establishment speed.

Description

technical field [0001] The invention relates to a method for afforestation and grass planting, in particular to a method for afforestation and grass planting in alignment and mixed cultivation. Background technique [0002] There are many types of purple soil hills in southern my country. The landforms include low mountains, hills, and hills. The soil types include acidic purple soil, neutral purple soil, and calcareous purple soil. The parent rocks include purple sandstone, purple shale, and purple sand shale. The types of land made up of these elements are diverse. Taking Hunan Province as an example, the purple soil hills mainly include neutral purple purple low mountains, acid purple soil low mountains, neutral purple soil hills, acid purple soil hills, acid purple hills, acid purple sand hills, and calcareous purple rocks. hilly land, calcareous purple soil hilly land, calcareous purple sandy soil hilly land, etc. These purple soil hills have sparse forest vegetation, ...

AI Technical Summary

Problems solved by technology

However, there are only two types of purple soil hills involved in this study, and there are few tree species, which are not suitable for the climate, soil pH, and site conditions. The mixed effect of tree species is not very significant, and it has a considerable effect on solving the vegetation restoration of southern purple soil hills. limited

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