Saline-alkali land desalination method

Abstract

The invention provides an alkali soil desalting method which comprises the following steps: performing ditching in to-be-desalted alkali soil and forming a c hannel and a planting area; planting halophilous plants in the planting area; performing desalting treatment on the planting area; arranging a salt content monitor probe in a planting layer, measuring salt content indexes and sending the salt content indexes to a monitoring platform through an Internet server, making a judgment according to a preset first salt content index and a preset second salt content index and the measured salt content indexes and making early warning or warning signals by the monitoring platform, and performing regular irrigation desalting treatment on the planting area according to the made signals. According to the alkali soil desalting method, the salt content indexes of the lower portion, the middle and the upper portion of the planting area can be detected accurately, the monitoring is performed through a network information platform, irrigation desalting is performed regularly, the desalting effect is improved, the desalting cycle is shortened, and the plant survival rate is improved. Collected saline planted halophilous plants are utilized, and resources are utilized rationally.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a saline-alkali land desalination method. Background technique [0002] my country's coastline is more than 18,000 kilometers long. Coastal saline-alkali areas are mostly lands receding from the sea, and most of the soil is coastal saline-alkali soil, which develops directly on the saline silt of tidal flats. This kind of saline-alkali geological soil is heavy and viscous, not only the surface layer of the soil is heavy in salt, but also the content of salt in the bottom soil is very high, which is similar to the original saline silt. At the same time, due to the shallow buried depth of groundwater in coastal areas and the shallow groundwater is saline water, groundwater with high salinity accumulates in the upper soil with strong soil surface evaporation. -4%. Another characteristic of coastal saline-alkali soil is that the salinity chemical composition of soil and g...

AI Technical Summary

Problems solved by technology

[0004] However, these methods have also achieved certain effects on a certain basis, but many technical solutions and construction techniques are relatively lagging behind, and the land resources that need to be developed in my country are relatively slow, and the cost is high, and the effect of salt discharge is not obvious.

[0005] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve