The aim is to establish the influence of phosphogypsum on processes solonetsization, alkalinity and alkaline soil Magnesium solonetsization basin Asa, Talas and perfection of technology of phosphogypsum application on degraded soils. In the condition of South Kazakhstan, where the root zone processes magnesium and alkalinity of soil alkalization proceed rapidly, the cheapest and most affordable ameliorants is phosphogypsum. Adding to the soil phosphogypsum with rate of 5-7 t/ha, provides not only a decrease in magnesium content in the soil-absorbing complex (SAC), but also increase reserves of mobile forms of phosphorus in the root zone layer.
irrigation, soil, phosphogypsum, alkalinity, magnesium, phosphorus
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