AGRO 70 |
| The Study has shown that in soil of Zarafshan valley of Uzbekistan the content of organic carbon falls down and is mainly below 1%. Among natural factors the type, sorbing and different kinds of ground, above the gradient, sternness, mechanical composition, height of the location sea level among anthropogenic factors the rotation crop, predecessor, system of the processing, fertilizers, irrigation, degree and of mastering greatly influence on the content of organic carbon in soil. Experiences made with isotope S-14 have shown that the increasing of the dose of the nitric fertilizers leads to the decrease of the transition marked carbon the Lucerne in the composition of humus but low and moderate doses of hitch fertilizers increase the transition. Our studies and calculations have shown that carom 1971 to 1991 in the farm “Saidbekmurodov” the of humus falidown spare from 120 t/hà to 62 t/hà. The loss of humus was 58 t/hà that promotes the increase of the leaving the carbon dioxide in atmosphere on 123,35 t/hà. This breaks the natural balance of carbon in agrolandscapts and the fertility of soil. The Study shows that the works which promote the reinforcement of the processes of oxidation, aeration increase the content of the mineral nitrogen, reinforcement àmmonification, nitrification and de nitrification lead to escalated decomposition of humus. Besides that the reduction of the C:N in soil correlation intensifies the mineralization of humus and promotes the formation of "Extra" nitrogen. Hereby the confection of carbon as an organic material is actual for the decision of the problem of soil fertility and for the reduction of the content of dioxide in atmosphere. The content of organic carbon as humus has the great for the increased of the manure of soil.
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New Developments and Issues in Agrochemical Sciences
8:00 AM-11:00 AM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Agrochemicals |