Эффективность азотного удобрения на льне-долгунце в зависимости от погодных условий вегетационного периода
2010
Prudnikov, V.A., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute of Flax
In the conditions of the Republic of Belarus there were presented the results of a field experiment realized in 2008-2009 on sod-podzolic soils on studying the efficiency of nitric fertilizers on yield formation and quality indexes of fiber flax (Linum usitatissimum elongata) of Levit-1 and Tabor varieties depending on the weather conditions during the vegetation period. Mineral fertilizers were applied as ammonium saltpeter, double acid phosphate and potash chloride in dozes of P60K90N0-15-30-45. Research results showed that nitrogen fertilizer did not render negative influence on the content fiber in flax rotted straw of the analyzed varieties cultivated after oat (Avena saliva) in the conditions of dry vegetation period. Nitrogen fertilizer applied in doze of N45 increased the yield till 2.08 t/ha (Levit-1) and till 2.37 t/ha (Tabor). Application of nitrogen fertilizer decreased the yield of Levit-1 on 5.5%, long fiber – on 5.8%, Tabor – 12.3% and 9.3% respectively in the conditions of when there were 306 millimeters of precipitation in the period from seedlings to early yellow ripeness. Profitability of nitrogen fertilizer application achieved 112-325% in the conditions of dry vegetation period. During the wet vegetation period the application of nitrogenous fertilizer was inefficient.
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