Comprehensive improvement method for salinized soil

Abstract

A comprehensive improvement method for salinized soil includes S1, applying fertilizer; S2, performing soil preparation, namely building an arc-shaped gentle slope every 5-10 meters and digging an open trench between bottoms of every two arc-shaped gentle slopes; S3, laying pipes and irrigating, namely laying rotating micro sprinklers at the tops of the arc-shaped gentle slopes; S4, sowing suaeda salsa; S5, irrigating; S6, picking vegetables; S7, transplanting plants from late October to early November after seeds of the plants are mature and part of the seeds fall off. The comprehensive improvement method has the advantages that the salinized soil of coastal saline and alkaline land can be restored pointedly, improvement time can be shortened, and economic benefit can be achieved.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a comprehensive improvement method for saline soil. Background technique [0002] At present, the continuous deterioration of the ecological environment and people's unreasonable land development and utilization have led to the increasingly serious salinization of the soil, which has become a worldwide problem. The problem of soil salinization is a major problem that plagues the world's agricultural production. How to develop and utilize saline-alkali land resources and improve the use effect of saline-alkali land has aroused people's great attention. [0003] Due to the differences in environmental factors such as bioclimate in the distribution area of ​​saline soil, the area of ​​saline soil, the degree of salinization and the composition of salinity are obviously different in different regions, which can be roughly divided into the following areas. [0...

AI Technical Summary

Problems solved by technology

[0010] However, the saline soil in the coastal saline-alkali land has the following difficulties in restoration: 1) Due to the impact of seawater jacking and backflow, the groundwater level is difficult to control; 2) The land formation and land reclamation time is short, and the soil salinity is serious; 3) The soil Secondary salinization is serious; 4) Lack of fresh water resources, insufficient sources of flushing and drainage salt water; 5) Strong gleization of soil, poor physical properties of water; 6) Soil rich in nutrients and less organic fertilizer sources

[0011] The patent with the publication number 102388730A "A method for planting Suaeda saline by drip irrigation in heavy saline-alkali land in arid areas", however, this method is not suitable for the restoration of saline soil in coastal saline-alkali land, mainly because the drip irrigation salt goes with the water while Nutrients in the already barren land are also lost without nutrient supplementation; "one tube, one line" requires a large amount of capillary drip irrigation, which is a waste of resources; vegetables are not picked, and no economic benefits are produced

[0012] Application No. 201310407151.4, the patent titled "A Method for Accelerating the Natural Desalination Speed ​​of Coastal Dredging Fill Soil and Improving Soil Quality", has a slope for site preparation, but does not combine drip irrigation and micro-spraying for comprehensive improvement, and the improvement takes a long time