Attapulgite-based acid soil conditioner and preparation method thereof

Abstract

The invention discloses an attapulgite-based acidic soil conditioner and a preparation method thereof. Attapulgite and soda lime are used as main raw materials, enteromorpha and a doped graphite phase carbon nitride-molybdenum dioxide compound are used as auxiliary materials, the conditioner is prepared, and the pH of acidic soil can be greatly increased with a low application amount. The doped graphite phase carbon nitride-molybdenum disulfide compound is prepared by the following method: firstly, preparing doped graphite phase carbon nitride from urea, ferric chloride hexahydrate and succinic acid, then adding the doped graphite phase carbon nitride into a sodium molybdate-thioacetamide mixed aqueous solution, and carrying out hydrothermal reaction to obtain the doped graphite phase carbon nitride-molybdenum disulfide compound. The soil conditioner prepared by the invention can be used for improving the pH value of acid soil at a relatively low application amount.

Description

technical field [0001] The invention relates to the technical field of soil improvers, in particular to an attapulgite acidic soil conditioner and a preparation method thereof. Background technique [0002] Soil is an important medium for plant growth. With the continuous growth of population and the rapid development of urban and rural construction, the demand for crops continues to increase, so the requirements for soil quality also become higher. There is a large amount of red soil in my country, which is generally acidic, with a pH between 4.5 and 6.0. With the rapid development of industry, the content of acid gas in the air increases rapidly. When it settles into the soil in the form of acid rain, it also causes the pH value of the soil to drop, resulting in acidification of the soil. Moreover, with the extensive application of chemical fertilizers in recent years, soil acidification has become more and more serious. [0003] The root cause of soil acidification is t...

AI Technical Summary

Problems solved by technology

However, quicklime is easy to cause soil compaction and destroy the soil ecological balance

Moreover, in the process of acidic soil improvement, the application amount of acidic soil conditioner per mu often exceeds 100 kilograms, so a large amount of natural limestone resources or other organic matter improvers need to be mined and calcined, which will undoubtedly greatly increase the cost of soil improvement. At the same time, it will also cause new environmental pollution and energy consumption.

[0005] Patent application CN106433650A discloses an acidic soil conditioner, which is made of dolomite, potassium feldspar, quicklime, lime nitrogen, limestone powder, slaked lime, calcium magnesium phosphate fertilizer, boron mud, carbonated lime and diatomaceous earth, etc. However, its application rate is high, and the improvement of soil pH is limited

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