Fertilizer capable of preventing and treating red soil acidification

Abstract

The invention belongs to the technical field of agriculture and particularly relates to a fertilizer capable of preventing and treating red soil acidification. The fertilizer comprises the following raw materials in parts by weight: 0-50 parts of chemical nitrogen fertilizers and 50-100 parts of high-C / N ratio organic materials. The chemical nitrogen fertilizers are amide nitrogen. The high-C / N ratio organic materials are straws and field weeds with a C / N ratio of greater than 35, and has a length of less than 1 cm after mechanical pulverization; the 50-100 parts of high-C / N ratio organic materials are equivalent to a drying base with a temperature of 65 DEG C. The fertilizer capable of preventing and treating the red soil acidification, provided by the invention, has the benefits that the defect of improvement after traditional acidification is overcome; the crop straws or the field weeds with high C / N ratio are mixed with the chemical nitrogen fertilizers in different proportions, the chemical nitrogen fertilizers applied to soil or inorganic nitrogen in the soil itself is fixed together within a short term through soil self activity, and hydrogen ions generated in the nitrogen fertilizer nitrification process are consumed or neutralized, so that the purpose of preventing and treating the red soil acidification is achieved.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and particularly relates to a fertilizer for preventing and controlling acidification of red soil. Background technique [0002] Red soil is one of the important soil types in southern my country, covering 13 provinces (regions) and 619 counties (cities) in southern China, with an area of ​​1.13 million km2 2 , accounting for 11% of the country's soil area, and plays a very important role in my country's food security. However, the acidification of red soil has intensified in recent years, which has severely restricted the sustainable development of agriculture in this area. Studies have shown that excessive application of chemical nitrogen fertilizer is the main reason for exacerbating soil acidification in red soil areas. For example, chemical nitrogen fertilizer applied to the soil is generally converted into nitrate nitrogen within a month, and hydrogen ions (H ions) are released. + ), ...

AI Technical Summary

Problems solved by technology

[0003] Lime and other alkaline substances are traditional and effective measures to neutralize soil acidity. Although these measures have a significant effect on reducing soil acidity, they are costly and difficult to maintain, and have little effect on other nutrients needed by crops. Excessive application rate will even reduce the availability of other nutrients (such as phosphorus and trace element zinc, etc.)

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