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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">kaz65</journal-id><journal-title-group><journal-title xml:lang="ru">Почвоведение и агрохимия</journal-title><trans-title-group xml:lang="en"><trans-title>Soil Science and Agrichemistry</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1999-740X</issn><issn pub-type="epub">2959-3433</issn><publisher><publisher-name>Казахский научно-исследовательский институт почвоведения и агрохимии имени У.У. Успанова</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">kaz65-517</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Плодородие почв</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Soil fertility</subject></subj-group></article-categories><title-group><article-title></article-title><trans-title-group xml:lang="en"><trans-title>DYNAMICS OF FERTILITY ELEMENTS OF ALLUVIAL - MEADOW SALINE SOILS IN EXPERIMENTAL PLOT UNDER MELILOTUS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Saparov</surname><given-names>A. S.</given-names></name></name-alternatives><email xlink:type="simple">ab.saparov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Dosbergenov</surname><given-names>S. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Mukhambetov</surname><given-names>B. .</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="en">Kazakh Research Institute of Soil Science and Agrochemistry after U.U. Uspanov<country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="en">Atyrau Branch of Southwest Research Institute of Animal Husbandry and Crop production<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>07</day><month>11</month><year>2022</year></pub-date><volume>0</volume><issue>4</issue><fpage>22</fpage><lpage>29</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Saparov A.S., Dosbergenov S.N., Mukhambetov B..., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Saparov A.S., Dosbergenov S.N., Mukhambetov B...</copyright-holder><copyright-holder xml:lang="en">Saparov A.S., Dosbergenov S.N., Mukhambetov B...</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.soil.kz/jour/article/view/517">https://journal.soil.kz/jour/article/view/517</self-uri><abstract><p>В статье приводятся результаты сезоннои динамики питательных веществ на аллювиально-луговых солончаковатых почвах опытного участка под кормовои культурои донника. Заложенные опыты на фоне навоза с применением гуминового препарата-адаптогена ПА 2-1 характеризуются повышением их плодородия. В нитратном режиме почвы наблюдается явная зависимость от фазы возделываемои культуры донника. Значительное количество подвижного фосфора и обменного калия отмечено в весеннем сроке. В летнии срок наблюдается постепенное снижение содержания этих элементов. В конце лета наблюдается постепенное увеличение содержания этих элементов. Содержание элементов питания во всех вариантах опыта выше в пахотном горизонте опытного участка.</p></abstract><trans-abstract xml:lang="en"><p>The paper presents the results of seasonal dynamics of nutrients in alluvial meadow saline soils in experimental area under fodder crop melilot. Conducted experiments on manure background with application of humic-adaptogen drug PA 2-1 are characterized by increase of their fertility. In soil nitrate mode a clear dependence on the phase of cultivated melilot crop has been observed. A significant amount of mobile phosphorus and exchangeable potassium has been observed in spring. During the summer period a gradual decrease in concentration of these elements has been observed. At the end of the summer a gradual increase in concentration of nutrients has been observed. Nutrient elements concentration in all variants of the experiment is higher in arable horizon of pilot area.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>topsoil</kwd><kwd>manure</kwd><kwd>drug-adaptogen</kwd><kwd>nitrate mode</kwd><kwd>mobile phosphorus</kwd><kwd>exchangeable potassium</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Zhukov M.M. Plioncen and quaternary history of the north of Caspian depression. In the book.: "Issues of Western Kazakhstan". - M, 1945. - Т. 2. - 236 p.</mixed-citation><mixed-citation xml:lang="en">Zhukov M.M. 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