[Efficiency of liming and potassium fertilizers application on decrease in radiation dose of radionuclides on population]
2007
Putyatin, Yu.V., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
Use of such protective measure as liming is expedient at density of pollution from above 0,5-0,7 Ci/square km on 90Sr and from above 15 Ci/square km on 137Cs, the raised dozes of potash fertilizers application - at density of pollution from above 10 Ci/square km on 137Cs at putting of economic and radiological parameters to an uniform cost scale. Application of N90P90K120-180 of fertilizers doses a background of liming of dolomitic flour in a doze of 6 t/ha can be considered as an optimum variant from the point of view of economy of a doze and expenses for it. Accounts have shown that at full mineral fertilizers application in a dose of N90P90K60 under spring rape economy of collective dose 90Sr has made 1,2 manSv, in doses N90P90K120-180 – 2,4 manSv. Application of similar doses of mineral fertilizers on the liming backgrounds was more effective. On the background of dolomitic flour in a doze of 6 t/ha at N90P90K120-180 application economy of a dose has made 8,6 manSv and at increased dose of potassium in variant N90P90K120 – 8,9 manSv, on the background of 18 t/ha – 9,5 and 9,7 manSv accordingly. At density contamination 1 Ci/square km on 90Sr the cost of collective dose on 1 manSv was lower than normative indicator – 43 mln. rbl. except variants with NPK application acid soil
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