LY/T 3251-2021Technical regulations for Russian olive afforestation on difficult habitat (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted:

1 Scope

This document specifies the soil survey of Elaeagnusangustifolia in difficult site afforestation such as saline-alkali land and arid sandy land:

And technical requirements for improvement, land preparation, planting, young forest tending, pest control, archives and other technical requirements:

This document is applicable to the construction and management of jujube on difficult sites such as saline-alkali land and desertified land:

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document:

GB 6000 Quality classification of seedlings of major afforestation tree species GB/T 15776-2016 Technical regulations for afforestation NY/T 1121 (all parts) Soil Testing LY/T 1249 Calculation standard of soil alkalinity degree

3 Terms and Definitions

The following terms and definitions apply to this document:

difficult habitat

Saline land, desertified land and other sites where it is difficult to afforestation is difficult:

saline-alkalisoil Soil with excess soluble salts accumulated in the surface layer or in the soil mass:

sandifiedland

The surface presents degraded land mainly marked by sand (gravel) material:

degradedland

The original internal structure, physical and chemical properties are changed due to the interference and destruction of human factors or natural factors or artificial and natural comprehensive factors:

land:

4 Soil investigation and improvement

4.1 Soil investigation Soil physical and chemical properties are mainly tested for pH value, water content, bulk density, organic matter, and total salt content according to NY/T 1121, and for alkalinity LY/T 1249 performs: