Method for improving saline-alkali land

Abstract

The invention discloses a method for improving saline-alkali land. The method includes the steps of A, subjecting the saline-alkali land to deep ploughing, upturned-soil drying and leveling; B, subjecting the leveled saline-alkali land to salt elimination with underground pipes; C, after the underground pipes are laid, irrigating the saline-alkali land; D, applying a soil improver to the saline-alkali land after treatment. The steps A and D are performed once a year for 1-3 years continuously; with the method, soil salinity in the saline-alkali land can be reduced, soil nutrient is increased,and purposes of improving soil salinization, increasing grain output, enlarging vegetation coverage, alleviating ecological and environmental degradation and the like efficiently are achieved; the method is highly targeted, remarkable in effect and capable of being applied on a large scale.

Description

technical field [0001] The invention relates to the technical field of soil land improvement, in particular to a method for rapidly improving saline-alkali land. Background technique [0002] my country is one of the countries with more serious salinization hazards, and there are about 27 million m2 of saline-alkali land in the country. 2 , of which 7.7 million m 2 The above are distributed in farmland, accounting for about 7% of the cultivated land area. For arid areas, more than 1 / 3 of the soil belongs to the low and medium fields caused by salinization. Improving saline-alkali land and preventing secondary salinization, as well as maintaining and improving land productivity are important elements for maintaining land productivity in arid areas and for sustainable agricultural development. Because soil salinization directly affects soil structure, water and air conduction, water supply and fertilizer supply capacity, as well as plant emergence and growth process, scholar...

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is that, aiming at some defects in the prior art, a novel method for improving saline-alkali land is provided, which can reduce the salt content of soil in saline-alkali land; increase soil nutrients, thereby effectively improving soil salinization, Increase food production, increase vegetation coverage, reduce ecological environment deterioration and other issues; the method provided by the invention is highly targeted, has significant effects, and can be applied on a large scale

Images