[Mineral feeding and productivity of spring triticosecale cultivated on degraded peat soils]
2006
Semenenko, N.N. | Zhuravlev, V.A.,National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Land Reclamation
Results of three-year research into the influence of increased doses of nitrogen (0-120), phosphorus (0-120), and potassium (0-160 kg/ha) and their combinations and weather conditions on the rates of mineral feeding and productivity of spring triticosecale have presented. It was established that increased fertilizer doses do not change considerably concentration of feeding elements, while absorption of elements by dry mass (output) increases regularly (square R = 0.77-0.99). Potassium has the highest concentration in plants and biomass output, then come nitrogen and phosphorus. The content of nutritive elements (N, Р, K, Са, Mg) in plants of spring triticosecale under influence of increasing dozes of nitric, phosphoric and potash fertilizers and intensive accumulation of biomass changes insignificantly (CV less than 10%). Nutritive elements absorption by plants is increased with increase in dozes of fertilizers. Regularities of absorption of nitrogen, phosphorus and potassium on phases of development of plants are in close dependence on a level of applied dozes of fertilizers (square R = 0,77 - 0,99) and are described by the corresponding equations of regression. Absorption of nitrogen, phosphorus, potassium and other elements is in interrelation and interdependence with each other and represents uniform dynamical system in which the basic role belongs to a level of a nitric nutrition. Absorption of phosphorus (square R = 0,95) and potassium (square R = 0,99) is strengthened with increase of a level of a nitric nutrition. Improvement of a phosphoric and potash feed strengthens nitrogen absorption by plants (square R = 0,91-0,99). On absorption of nutritive elements, formation of components of efficiency and productivity of spring triticosecale and efficiency of fertilizers weather conditions essential influence (supplying plants by heat and moisture). Especially it is important during the beginning of shooting-flag leaf when formation of reproductive organs occurs. The greatest productivity of spring triticosecale and efficiency of fertilizers are received at application N90 into a combination with P60-90 and K80-120
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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تم تزويد هذا السجل من قبل National Academy of Sciences of Belarus