Эффективность систем удобрения при возделывании озимого тритикале на дерново-подзолистой супесчаной почве
2010
Lapa, V.V. | Ivakhnenko, N.N. | Lomonos, M.M. | Pilipchuk, A.V. | Shumak, S.M., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
In the conditions of the Republic of Belarus there were determined the most effective doses and correlations of mineral fertilizers for winter triticale (Triticosecale), based on criteria of obtained crop yield, agronomic recoupment of applied fertilizer doses and seed quality. Winter triticale was grown in grain-grass-raw crop rotation after red clover on sod-podzolic sandy loam soil. In course of the research it was found that split application of N150 (N90 at the beginning of vegetation + N30 at the phase 29 according Tsadex + N30 at the last leave phase) at background of P40 K80 and aftereffect of 40 t/ha FYM provided triticale yield 76.5 c/ha, protein content in grain 12.1% and protein yield 788 kg/ha. Increased of nitrogen fertilizer dose from 90 to 150 kg/ha of active ingredient and application of its in two or three terms provided increase of nitrogen, phosphorous, potassium, calcium oxide, magnesia content in winter triticale grain. At optimal crop yield there was the following content of nutrients in grain: nitrogen -1.93, phosphorous – 0.93, potassium – 0.67, calcium -0.05 and magnesium 0.17%; in straw: N – 1.24%, P2O5 – 0.60, K2O – 1.54, CaO – 0.12 and MgO -0.14%. The fertilizer application system with dose of nitrogen 150 kg/ha of active ingredient (N90+30+30P40K80) provided a maximum economic return of nutrients. At growth of nitrogen, phosphorous and potash fertilizers a content of 7 indispensable amino acids in grain of winter triticale increased.
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