Вынос калия урожаем культур севооборота в зависимости от кислотности дерново-подзолистой легкосуглинистой почвы, уровня обеспеченности подвижным калием и доз калийного удобрения
2012
Safronovskaya, G.M., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry | Germanovich, T.M., Belarus State Economic Univ., Minsk (Belarus) | Satishur, V.A., National Academy of Sciences (Belarus). Polesye Agrarian Ecological Inst. (Brest) | Tsaruk, I.A., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
Optimization of mineral nutrition of plants appears one of the most important factors of promotion of quality of agricultural cultivars along with crop yield increase. Evaluation of the efficiency of combined action of separate elements of nutrition from fertilizers and soil can be done with the help of determining of their content in agricultural production. Solution of the problem of rational and the most effective utilization of potassium fertilizers is based on calculation of the dozes of fertilizers and output of nutritive elements by plants. Complex evaluation of the influence of different dozes of fertilizers (inter alia potassium fertilizers) allows compare the number of nutritive elements and crop yield level. Substantiation of the influence of correlation between acidity of sod-podzolic light loamy soil, availability of mobile potassium and dozes of potassium fertilizers on the crop yield of agricultural crops (spring triticale, peas, spring rape seeds, green weight of pea-oat mixture) is made. It is established, that on removal of potassium by basic production of the specific cultures the paramount influence is rendered by their biological features and level of productivity. Potassium removal by green mass of agricultural crops, grown on soils, provided with mobile potassium at a level of 300-350 mg/kg is evaluated depending on soil acidity and fertilizers' dozes. Crop yield and potassium content of the different crops according to soil acidity and fertilizers' dozes is analyzed. Complex analysis of the influence of different dozes of potassium fertilizers, soil acidity and mobile potassium content on yield increase is made.
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