Special carbon-based organic-inorganic compound fertilizer for saline-alkali soil and preparation method of special carbon-based organic-inorganic compound fertilizer

Abstract

The invention discloses a special carbon-based organic-inorganic compound fertilizer for saline-alkali soil. The compound fertilizer is prepared from the following components in parts by mass: 100 to 200 parts of charcoal, 150 to 250 parts of humic acid, 30 to 100 parts of wood vinegar, 10 to 30 parts of medical stone, 50 to 100 parts of bentonite, 50 to 100 parts of phosphogypsum, 100 to 150 parts of nitrogen fertilizer, 100 to 150 parts of phosphate fertilizer, 100 to 150 parts of potassium fertilizer and 10 to 50 parts of trace elements. By applying the special carbon-based organic-inorganic compound fertilizer for the saline-alkali soil, poor physicochemical properties of the saline-alkali soil are improved, the volume weight of the saline-alkali soil is reduced through the special structure of the biochar, the water retention, water permeability and air permeability of the saline-alkali soil are improved, the microorganism content of the soil and the water and fertilizer retention capacity are increased, and the poor physicochemical properties of the saline-alkali soil are fundamentally improved; and the purposes of increasing yield and increasing efficiency are achieved for promoting agricultural sustainable development.

Description

technical field [0001] The invention belongs to the field of organic fertilizers, and in particular relates to a special carbon-based organic-inorganic compound fertilizer for saline-alkali land and a preparation method thereof. Background technique [0002] Saline-alkali soil is a degraded soil with poor agricultural productivity. Globally, the soil affected by salinity reaches about 1 billion hectares, accounting for about 7% of the earth's continental area and 20% of the world's irrigated land. Due to different climates, natural environments and soil formation processes, the distribution and types of soil affected by salinity are significantly different in different regions and countries. The Songnen Plain is located in the east of the farming-pastoral ecotone in northern China. It is an important farming and animal husbandry base in northern China. As one of the three largest soda saline-alkali soil distribution areas in the world, it contains more than 3.73 million hec...

AI Technical Summary

Problems solved by technology

[0003] The physical and chemical properties of saline-alkali soil are poor. Salt will lead to water shortage of plants, smaller soil porosity, easier soil compaction, poor soil structure, poor water holding capacity and water permeability; inhibit nutrient absorption process and enzyme activity , affecting the activity of soil microorganisms and the transformation of organic matter, the decline of organic matter content, resulting in a decline in soil fertility; some salt ions in the soil poison the root system of plants, causing changes in the shape and structure of plants