Влияние удобрений и погодных условий на фотосинтетическую деятельность и продуктивность озимого тритикале на антропогенно-преобразованных торфяных почвах
2010
Semenenko, N.N. | Vaga, I.I., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Land Reclamation
Influence of rates and balance of mineral fertilizer elements and weather conditions on the formation of photosynthetic potential of winter triticale were studied in the conditions of the Republic of Belarus. Also, there were analyzed the optimal parameters of leaf-area duration and photosynthetic potential which provided the formation of the maximum level tops and grain yield. Research results showed that leaf area of winter triticale tops achieved its maximum development at the flag phase. Nitrogen fertilizers application influenced the formation of winter triticale tops. Research results showed that the combined application of nitrogenous fertilizers against the background of phosphate and potash fertilizers made it possible to increase the resistance of crops to the unfavourable weather conditions, promoted the formation of the assimilating surface and crop-producing power of plants. In the conditions of application of N60-120 against the background of phosphoric and potash fertilizers the average leaf-area duration in flag phase was 44,9-50,3 thousand m2/ha. In course of investigation years the largest leaf area, photosynthetic potential and crop-producing power of winter triticale were formed after application of N120P80K120. Photosynthetic potential of leaf area was 3,88-4,51 million m2/day/ha and made it possible to obtain the grain yield of 40,8-48,8 centner/ha in 2006, 29,4. Depending on the doses of phosphoric and potash fertilizers the yield increase of winter triticale balanced from 4,3 to 10,1 centner/ha; and depending on the doses of nitrogen fertilizers – varied from 8,3 to 13,1 centner/ha. Application of full NPK fertilizers made it possible to obtain the highest yield (65,3-68,3 centner/ha)
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