Comprehensive treatment method for coastal saline-alkaline land

Abstract

The invention relates to a technical field of saline-alkaline land improvement, in particular to a comprehensive treatment method for coastal saline-alkali land. The method comprises the following steps that 1, soil ploughing is conducted to obtain loosened soil, a mixture of sulfur and biomass charcoal is added into the loosened soil and mixed evenly, soil ploughing is conducted again, and the soil is kept for 10-30 days; 2, microbial fermentation pond sludge is added into the soil, soil ploughing is conducted, and the soil is kept for 10-30 days; 3, organic fertilizer is applied, and soil ploughing is conducted. By means of the method, the soil structure can be improved, the water holding capacity and water permeability of surface soil are improved, the downward migration of salt is promoted, and the desalination rate is increased; the content of organic matter in the soil is increased, so that crops obtain comprehensive nutrients in the whole growth process; the pH value and ESP value of the soil are obviously reduced, the pH value and ESP value of the heavy saline-alkaline soil can be reduced quickly, a dealkalization and desalination effect is achieved within a short period, and the normal growth of the crops can be promoted; raw materials are waste materials and are re-utilized, the input cost is low, and the method is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a comprehensive treatment method for coastal saline-alkali land. Background technique [0002] There are large areas of saline-alkali land distributed in our country, and the degree of salinization is expanding, especially in coastal areas. Land salinization not only reduces agricultural production in our country, but also causes great losses. Due to the increasingly serious degree of salinization, large areas of land gradually become wasteland, with no grass growing and no harvest. [0003] Transforming saline-alkali land and improving the agricultural production of saline-alkali cultivated land is one of the important tasks of agricultural development in my country. However, the traditional method of soil amendment for saline-alkali land mainly uses gypsum to replace sodium in the soil, and this method is relatively simple. The title of invention disclos...

AI Technical Summary

Problems solved by technology

However, because the above-mentioned amendments cannot effectively improve the soil in saline-alkali land, the soil is easy to compact, so the soil permeability is poor, and it is difficult for water to penetrate downwards, resulting in surface runoff, which makes it difficult to elute the salt in the soil.