Soil conditioner for coastal saline-alkali land and using method of soil conditioner

Abstract

The invention provides a soil conditioner for coastal saline-alkali land and a using method of the soil conditioner. The soil conditioner for the coastal saline-alkali land comprises the following rawmaterials in parts by weight: 20-35 parts of desulfurized gypsum, 10-15 parts of sulfur, 15-25 parts of humic acid, 5-15 parts of fermented pine needle leaves, 0.2-1 part of a composite microbial agent and 5-10 parts of a carbon source. The soil conditioner of the coastal saline-alkali land and the using method of the soil conditioner have the advantages of low cost, simple construction, environmental friendliness and good effect of reducing the salinity and alkalinity of the soil.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a soil improver for coastal saline-alkali land and its application method. Background technique [0002] Saline-alkali water is the third water resource different from seawater and fresh water. The saline-alkali land area in the world is about 950 million hectares, accounting for 1 / 3 of the total land area. The saline-alkali land area in my country is 1.49 billion mu, and the saline-alkali water is about 690 million mu, which is 8 times the existing freshwater aquaculture area. Due to the complexity and diversity of saline-alkali water quality, humans and animals cannot drink it, and it cannot be directly used in agricultural production. The current development and utilization rate is less than 2%, and most of them are idle. [0003] Coastal saline-alkali soil is obviously affected by seawater intrusion, especially under the action of periodic seawater ebb and flow, which will bring a...

AI Technical Summary

Problems solved by technology

Due to the complexity and diversity of saline-alkali water quality, humans and animals cannot drink it, and it cannot be directly used in agricultural production. The current development and utilization rate is less than 2%, and most of them are idle.

[0004] Most of the existing saline-alkali soil improvement technologies are carried out by digging ditches, lifting fields, and field engineering measures. The initial investment is large, and ordinary farmers cannot afford it, thus limiting the promotion of this treatment method; or by applying a single improver , such as desulfurized gypsum, coal gangue, fly ash, phospholime, etc., not only the application amount is too large, but also the heavy metals contained in these materials are easy to cause secondary pollution to the soil; at the same time, each time a large amount of modified substances are added, The actual effect of alkali reduction and salt suppression is limited, especially the low content of organic matter that plays an important role in crop growth and soil structure, which weakens the actual effect of saline-alkali soil amendments

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