Coast saline-alkali soil forestation method

Abstract

The invention discloses a coastal kaline soil forestation method, comprising the following steps: A. trenching and building ridges, and building rain collection beds; B. setting rain collection surfaces; C. digging plant pits, and setting salt isolation layers; D. collecting tree species and planting; E. setting surface cover layers of plant pits; F. tending, and weeding at proper time; wherein, the step of trenching and building ridges, and building rain collection beds is based on the design of forestation spacing, and flow collection trenches are dug at interval of a row spacing along the direction of rows; the depth of the trench bottom is 20cm to 25cm; the ground surface between the ridge and the trench bottom is trimmed to form a shallow v-shaped groove; the sloping surfaces are leveled and compacted to form the rain collection beds. The coastal moderate kaline soil forestation technology of the invention greatly increases the water content of soil, and the salt is efficiently leached and reduced, thereby efficiently improving the survival rate, save rate and growing speed of forests; the survival rate of forests reaches greater than 85%.

Description

technical field [0001] The invention relates to a method for afforestation, more particularly to a method for afforestation in coastal saline-alkali land with a salinization degree below moderate. Background technique [0002] At present, the coastal saline-alkali afforestation land has the following characteristics: the coastal saline-alkali soil is rich in soluble salts, mainly chloride, the groundwater table is high, generally 0.5-3m, and the water evaporates strongly. The survival rate and preservation rate of afforestation in coastal saline-alkali land are low, and the growth of trees is slow, which are common problems in saline-alkali land. [0003] The afforestation techniques for controlling saline-alkali land generally include the following types: (1) Alien soil method: trees grow better at the initial stage of afforestation, but with water movement and soil salinity, it will be consistent with the surrounding soil environment after 2 to 3 years, and its effect disa...

AI Technical Summary

Problems solved by technology

The traditional fertilization improvement method has a long period, is difficult to manage, is easy to return to salt, and the survival rate of trees is low. However, the cost of chemical amendments is high, and it is difficult to promote in a large area; (4) Plant mulching method: requires high field management. It is easy to compete with trees for nutrients; (5) Flood irrigation method: the waste of water resources is serious, and it is more likely to cause secondary salinization; (6) Secret pipe salinization and alkali drainage method: the effect is good, but the investment is huge

[0004] At present, there is no successful simple and easy supporting technology for afforestation in coastal saline-alkali land at home and abroad.

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