Biomass power-plant ash-based composite modifier for acidic soil

Abstract

A provided biomass power-plant ash-based composite modifier for acidic soil is characterized by being prepared by biomass power-plant ash, apatite, lime and fly ash. The technology of the composite modifier is simple, free of pollution, and easy to implement, is applicable to industrialized production but also individual farmer household preparation; and the composite modifier is capable of substantially improving soil pH and cation exchange amount, improving soil base ion composition, increasing soil nutrient and improving land productivity.

Description

technical field [0001] The invention belongs to the technical field of preparation of soil improvement and soil conditioning materials, and relates to the technology of preparing soil conditioner by utilizing industrial waste biomass power plant ash. technical background [0002] Due to the impact of human activities, the current soil acidification area in my country has reached more than 40% of the cultivated land area, and the acidification trend is obvious, threatening the red line of my country's 1.8 billion mu of cultivated land. Soil acidification leads to lower pH and higher aluminum activity in the soil , significantly reducing crop yield and quality, and restricting the sustainable development of regional agriculture. The traditional method of improving acidic soil is to add alkaline substances such as lime to neutralize soil acidity and increase soil pH, but this often requires the consumption of additional mineral resources and damages the ecological environment du...

AI Technical Summary

Problems solved by technology

However, the pH of biomass power plant ash is 8-12, and acidity regulators (Chinese Patent Nos. 200610069650.7, 2006100669649.4 and 201110223811.4) are needed in the process of processing, which not only consumes acid resources and energy, but also makes it lose the effect of improving acidic soil. Definitely a waste of resources

Chinese Patent No. 201110272829.3 provides a soil improver with biomass power plant ash as the main raw material. The improver only adds sawdust, which can improve soil compaction while adjusting soil acidity. Ordinary chemical fertilizers can also be added to supplement nitrogen and phosphorus in acidic soil. , Potassium, but it is difficult to solve the lack of elements such as calcium, magnesium and zinc in acidic soil

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