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    Wyświetlanie 1-12 z 12
    Tytuł:
    A new genus of Late Ordovician-Early Silurian pentameride brachiopods and its phylogenetic relationships
    Autorzy:
    Jin, J
    Popov, L.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/22557.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    pentameride brachiopod
    brachiopod
    paleontology
    new genus
    Siberia
    Late Ordovician
    Canada
    Brachiopoda
    Early Silurian
    Protanastrophia repanda
    Parastrophinidae
    Opis:
    Protanastrophia repanda gen. et sp. nov. is a reef−dwelling parastrophinid brachiopod in the Lower Silurian (uppermost Telychian) Attawapiskat Formation of the Hudson Bay region of Canada. It is characterized by a small, quasi−smooth shell with gentle anterior costae, a tendency towards an asymmetrical, sigmoidal anterior commissure, and widely separate, subparallel inner hinge plates. Protanastrophia first appeared in the marginal seas of Siberia (Altai, Mongolia) during the Late Ordovician, retaining the primitive character of discrete inner hinge plates in the superfamily Camerelloidea, and preferred a carbonate mound depositional environment. It survived the Late Ordovician mass extinction and subsequently spread to Baltica and Laurentia during Early Silurian (Llandovery) time. Superficially similar asymmetrical shells of Parastrophina portentosa occur in the Upper Ordovician carbonate mound facies of Kazakhstan but differ internally from the new genus in having a septum−supported septalium. Phylogenetic analysis indicates that, within the Camerelloidea, asymmetrical shells with a sigmoidal anterior commissure evolved in Protanastrophia repanda and Parastrophina portentosa independently during the Late Ordovician as a case of homoplasy. The two species belong to separate parastrophinid lineages that evolved in widely separate palaeogeographic regions.
    Źródło:
    Acta Palaeontologica Polonica; 2008, 53, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First report on the occurrence of Neseuretinus and Ovalocephalus trilobites in the Middle Ordovician of Iran
    Autorzy:
    Ghobadi, Pour M
    Popov, L.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/21343.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    trilobite
    taxonomy
    Trilobita
    paleontology
    Shirgesht Formation
    Ovalocephalus
    Neseuretinus
    Ordovician
    paleobiogeography
    Middle Ordovician
    Iran
    Opis:
    In the Derenjal Mountains of east Central Iran, the upper part of the Shirgesht Formation (uppermost Darriwilian) contains a distinct trilobite assemblage that includes Neseuretinus birmanicus and Ovalocephalus aff. obsoletus among others. Both genera were previously unknown in Iran. The occurrence of Ovalocephalus represents the earliest sign of westward taxon migration from China towards higher latitudes along the West Gondwanan margin, which may be related to global warming, after a short episode of cooler climate in the early to mid Darriwilian. Patterns of biogeographical distribution of Ovalocephalus and Neseuretinussuggest that Central Iran was part of an “overlap zone” where tropical and high latitude benthic taxa mingled.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 1; 125-133
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Earliest Silurian articulate brachiopods from central Kazakhstan
    Autorzy:
    Modzalevskaya, T L
    Popov, L E
    Powiązania:
    https://bibliotekanauki.pl/articles/23084.pdf
    Data publikacji:
    1995
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Stricklandia lens mullochensis
    sylur
    Kazachstan
    fauna
    skamienialosci
    Akidograptus acuminatus
    paleogeografia
    ramienionogi
    paleobiologia
    Monograptus cyphus
    Opis:
    An abundant early Silurian brachiopod assemblage of 14 species, with strong affinities to the early Rhuddanian faunas of Britain and Baltoscandia, was recovered from the Akkerme Peninsula, on the western side of Lake Balkhash, southern Central Kazakstan. The occurrence of Stricklandia lens mullochensis, which is ttre earliest member of the Stricklandia-Costistricklandia lineage, dates this brachiopod assemblage as early Rhuddanian, within a stratigraphic interval from the Akidograptus acuminatus to the lower part of the Monagraptus cyphus graptolite biozones. This is the first well documented record of early Rhuddanian brachiopods in Kazakhstan. The assemblage also includes Meifodia tulkulensis sp. nov. and Eospirifer cinghizicus with well preserved spiralia. The co-occurrence of Stricklandia lens mullochensis and Eospirifer cinghizicus has not been recorded previously and is regarded here as the most signiffcant difference between the early Rhuddanan brachiopod faunas of the Baltic (East-European) Plate and Britain; in contrast Eospirifer first appears in the two latter areas in the late Llandovery.
    Opisano obfitą faunę ramienionogową pochodzącą z wczesno-sylurskich warstw odsłoniętych wzdłuż północno-wschodniego wybrzeża półwyspu Akkerme (jez. Bałkasz, Kazachstan). Obecność w zespole Stricklandia lens mullochensis, która jest najwcześniejszym przedstawicielem linii Stricklandia-Costistricklandia, pozwala datować badany zespół na wczesny ruddanian, tj. interwał obejmujący poziomy od Akidograptus acuminatus do Monograptus cyphus. Jest to pierwsze tak dobrze udokumentowane występowanie ramienionogów tego wieku w Kazachstanie. Po raz pierwszy stwierdzono współwystępowanie Stricklandia lens mullochensis i Eospirifer cinghizicus, które zdaniem autorów, stanowi najistotniejszą różnicę między opisywaną fauną a zespołami tego wieku z Platformy Wschodnio-Europejskiej i Wielkiej Brytanii.
    Źródło:
    Acta Palaeontologica Polonica; 1995, 40, 4; 399-426
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Ordovician palaeogeography and the positions of the Kazakh terranes through analysis of their brachiopod faunas
    Autorzy:
    Popov, L. E.
    Cocks, L. R. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/138779.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Sandbian
    katian
    brachiopods
    Kazakhstan
    palaeogeography
    Central Asian Orogenic Belt
    sandb
    kat
    ramienionogi
    Kazachstan
    paleogeografia
    Azja Środkowa
    Opis:
    Detailed biogeographical and biofacies analyses of the Late Ordovician brachiopod faunas with 160 genera, grouped into 94 faunas from individual lithotectonic units within the Kazakh Orogen strongly support an archipelago model for that time in that area. The Kazakh island arcs and microcontinents within several separate clusters were located in the tropics on both sides of the Equator. Key units, from which the Late Ordovician faunas are now well known, include the Boshchekul, Chingiz-Tarbagatai, and Chu-Ili terranes. The development of brachiopod biogeography within the nearly ten million year time span of the Late Ordovician from about 458 to 443 Ma (Sandbian, Katian, and Hirnantian), is supported by much new data, including our revised identifications from the Kazakh Orogen and elsewhere. The Kazakh archipelago was west of the Australasian segment of the Gondwana Supercontinent, and relatively near the Tarim, South China and North China continents, apart from the Atashu-Zhamshi Microcontinent, which probably occupied a relatively isolated position on the south-western margin of the archipelago. Distinct faunal signatures indicate that the Kazakh terranes were far away from Baltica and Siberia throughout the Ordovician. Although some earlier terranes had joined each other before the Middle Ordovician, the amalgamation of Kazakh terranes into the single continent of Kazakhstania by the end of the Ordovician is very unlikely. The Late Ordovician brachiopods from the other continents are also compared with the Kazakh faunas and global provincialisation statistically determined.
    Źródło:
    Acta Geologica Polonica; 2017, 67, 3; 323-380
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Ordovician brachiopods from the Selety River basin, North Central Kazakhstan
    Autorzy:
    Nikitin, I F
    Popov, L.E.
    Bassett, M.G.
    Powiązania:
    https://bibliotekanauki.pl/articles/22739.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    brachiopod
    Ordovician
    Late Ordovician
    biogeography
    Selety River
    taxonomy
    Kazakhstan
    Brachiopoda
    paleontology
    Opis:
    A medium−diversity fauna of late Ordovician rhynchonelliformean brachiopods occurs in the Tauken Formation (upper Caradoc–lowermost Ashgill) of north Central Kazakhstan.It demonstrates close similarity to the approximately contemporaneous faunas characteristic of shallow clastic shelves (BA 2–3) of the Chingiz and Chu−Ili ranges (both in Kazakhstan) and South China, but is characterized by a high proportion of endemic new species, including Tetraphalerella bestiubensis sp.nov., Glyptomena kaskolica sp.nov., Dinorthis taukensis sp.nov., Rhynchotrema seletensis sp.nov., and Nalivkinia (Pronalivkinia)zvontsovisp.nov.The abundance of Rhynchotrema is somewhat unusual by comparison with faunas from other Kazakhstanian terranes, where rhynchonellides of the family Ancistrorhynchidae are usually dominant in near−shore biofacies.The occurrence of the atrypides Sulcatospira and early Nalivkinia demonstrates a clear biogeographical linkage with approximately contemporaneous faunas of South China.
    Źródło:
    Acta Palaeontologica Polonica; 2003, 48, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Middle Cambrian lingulate brachiopods from the Tarbagatay Range, Kazakhstan
    Autorzy:
    Popov, L E
    Holmer, L E
    Gorjansky, V J
    Powiązania:
    https://bibliotekanauki.pl/articles/21219.pdf
    Data publikacji:
    1996
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    brachiopod fauna
    Kostjubella relaxata
    geological setting
    Acrotretida
    Kazakhstan
    Cambrian
    taxonomy
    Stilpnotreta galinae
    Brachiopoda
    systematic palaeontology
    Opis:
    Early Middle Cambrian (Amgian) lingulate brachiopods from the Tarbagatay Range in eastern Kazakhstan represent mostly endemic taxa, which may suggest that the Tarbagatay Range was relatively isolated from adjacent terranes during that time; only Kleithriatreta indicate similarity with the Australian part of Gondwana, as well as with the south and central Kazakhstanian terranes. Late Middle Cambrian (Mayan) taxa from the same area are mostly cosmopolitan. Kostjubella relaxata gen. et sp. n., Prototreta (?) dolosa sp. n. and Stilpnotreta galinae sp. n. are proposed.
    Źródło:
    Acta Palaeontologica Polonica; 1996, 41, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new, unusual rhynchonellide brachiopod with a strophic shell from the Sirurian of Iran
    Autorzy:
    Popov, L.E.
    Hairapetian, V.
    Pour, M.G.
    Modzalevskaya, T.L.
    Powiązania:
    https://bibliotekanauki.pl/articles/20883.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Opis:
    A new, unusual rhynchonellide brachiopod Jafarirhynchus alatus assigned to the newly established family Jafarirhynchidae is described from the Silurian (Telychian) of the Boghu Mountains in east-central Iran. It forms a low diversity association with the spiriferide Striispirifer? ocissimus, which exhibits well preserved calcified brachial supports. A strophic shell, well-developed ventral interarea and liberosessile mode of life make this taxon unique among Palaeozoic rhynchonellide brachiopods. In spite of a superficial similarity to spiriferides and the atrypide family Davidsonioidea, Jafarirhynchus retains the typical rhynchotrematoid cardinalia with a septalium supported by the median septum, a septiform cardinal process and long, raduliform crura. It is considered as an offshoot of the local lineage, which includes two successive species of Stegocornu (family Rhynchotrematidae) which proliferated in Central Iran and adjacent Afghanistan during Aeronian time.
    Źródło:
    Acta Palaeontologica Polonica; 2015, 60, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A low diversity shallow water lingulid brachiopod-gastropod association from the Upper Ordovician of Kyrgyz Range
    Autorzy:
    Popov, L E
    Ebbestad, J.O.R.
    Mambetov, A.
    Apayarov, F.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/21229.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Kyrgyz Range
    Upper Ordovician
    paleobiogeography
    Brachiopoda
    Almaly Formation
    Lingulida
    Gastropoda
    lingulid
    Ordovician
    Tunisiglossa almalensis
    Ptychonema agyris
    paleontology
    brachiopod-gastropod association
    Opis:
    A low diversity association made up of the lingulid Tunisiglossa almalensis Popov and Mambetov, sp. nov. and the gastropod Ptychonema agyris Ebbestad, sp. nov. is described from the Upper Member of the Almaly Formation at Kyrgyz Range, North Tien Shan, Kyrgyzstan/Kazakhstan. The specimens co−occur in dense coquinas, made up of different sized individuals, deposited in a shallow water, intertidal, and storm driven depositional environment. The lingulid shells display a completely reduced dorsal pseudointerarea typical of Glossellinae, and the smooth shell lacking fine external granulation, radial or pitted ornament, a small ventral pseudointerarea, and no dorsal median ridge place it in the hitherto monotypic Tunisiglossa known previously only from the Lower Ordovician (Tremadocian) Sanrhar Formation of Libya. It compares with Ectenoglossa sorbulakensis that is widespread in the lower to middle Caradocian Anderken Formation of Chu−Ili Range in southern Kazakhstan. Gastropods of this age have not been reported earlier in Kyrgyzstan; neither can Ptychonema be compare with any taxon in the gastropod association earlier described from the contemporary Anderken Formation in Kazakhstan. Ptychonema is otherwise commonly associated with peri−Gondwana terranes, but the Late Ordovician dispersal pattern of the genus is unknown. Overall, however, the Upper Ordovician faunas of North Tien Shan show close similarities to contemporaneous faunas of the Chu−Ili terrane, which have strong biogeographic signatures linking them to the faunas of South and North China.
    Źródło:
    Acta Palaeontologica Polonica; 2007, 52, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ordovician ostracods from East Central Iran
    Autorzy:
    Ghobadi Pour, M.
    Williams, M.
    Vannier, J.
    Meidla, T.
    Popov, L.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/22059.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    geographic setting
    Iran
    Ordovician
    Ostracoda
    Shirgesht Formation
    brachiopod
    geological setting
    ostracod
    paleontology
    trilobite
    systematics
    ostracod fauna
    biogeography
    stratigraphy
    Opis:
    Ordovician ostracods are described for the first time from Iran, enhancing the record of this group from the Lower Palaeozoic of the Middle East. The ostracods occur in the Shirgesht Formation, in the east central part of the country, and comprise Ogmoopsis achaemenid sp. nov., Cerninella aryana sp. nov., Ordovizona amyitisae sp. nov., cf. Aechmina? ventadorni, Vogdesella sp., and podocope taxa tentatively identified as species of Longiscula, Pullvillites, and Rectella. These taxa were hitherto unknown from this region. The ostracod−bearing interval is associated with trilobites (Neseuretinus) and brachiopods (Nicolella) that suggest a late Middle Ordovician age. Although the ostracod fauna is small, it demonstrates biogeographical links at genus−level, and possibly at species−level, with the fauna of the late Middle Ordovician Travesout Formation of western France, which also lay in a peri−Gondwanan palaeogeographical setting. It also suggests the potential use of some ostracods as stratigraphical tools for correlating Ordovician rock successions between Europe and the Middle East.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Silurian stratigraphy of Central Iran - an update
    Autorzy:
    Hairapetian, V.
    Ghobadi Pour, M.
    Popov, L. E.
    Männik, P.
    Miller, C. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/139183.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Iran
    Silurian
    biostratigraphy
    lithostratigraphy
    sedimentology
    correlation
    sylur
    biostratygrafia
    litostratygrafia
    sedymentologia
    korelacja
    Opis:
    The Silurian biostratigraphy, lithostratigraphy, and facies of Central Iran including the Kashmar (Boghu Mountains), Tabas (Derenjal Mountains, Ozbak-Kuh), Anarak (Pol-e Khavand) and Kerman regions is reviewed and updated. The current state of knowledge of the Silurian in the Zagros Basin, Alborz, Kopet-Dagh and Talysh regions, as well as in a few areas scattered across the Sabzevar Zone, and the Sanandaj-Sirjan terranes is also reviewed. Silurian volcanism in various parts of Iran is briefly discussed. The end of the Ordovician coincided with a widespread regression across Iran synchronous with the Hirnantian glaciation, and only in the Zagros Basin is there a continuous Ordovician–Silurian transition represented by graptolitic black shales of the Sarchahan Formation. In the Central-East Iranian Platform marine sedimentation re-commenced in the early to mid Aeronian. By the Sheinwoodian, carbonate platform depositional environments were established along its north-eastern margin. In other parts of Iran (e.g., Kopet-Dagh and the Sabzevar Zone), siliciclastic sedimentation continued probably into the late Silurian. The Silurian conodont and brachiopod biostratigraphy of Central Iran is significantly updated facilitating a precise correlation with the Standard Global Chronostratigraphic Scale, as well as with key Silurian sections in other parts of Iran. The Silurian lithostratigraphy is considerably revised and two new lithostratigraphical units, namely the Boghu and Dahaneh-Kalut formations, are introduced.
    Źródło:
    Acta Geologica Polonica; 2017, 67, 2; 201-233
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Review of the Ordovician stratigraphy and fauna of the Anarak Region in Central Iran
    Autorzy:
    Popov, L. E.
    Hairapetian, V.
    Evans, D. H.
    Ghobadi Pour, M.
    Holmer, L. E.
    Baars, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/138968.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    darriwilian
    katian
    brachiopods
    cephalopods
    trilobites
    biogeography
    darriwil
    kat
    ramienionogi
    głowonogi
    trylobity
    biogeografia
    Opis:
    The Ordovician sedimentary succession of the Pol-e Khavand area, situated on the northern margin of the Yazd block, has important differences from those in other parts of Central Iran. It has been established that the presumably terminal Cambrian to Lower Ordovician volcano-sedimentary Polekhavand Formation, exposed in the Pol-e Khavand area, has non-conformable contact with greenschists of the Doshakh Metamorphic Complex. The succeeding, mainly siliciclastic Chahgonbad Formation contains low to moderately diverse faunal assemblages, including brachiopods, cephalopods, trilobites and tentaculitids. The Darriwilian age of the lower part of the formation is well established by the co-occurrence of brachiopod genera Camerella, Phragmorthis, Tritoechia and Yangtzeella. The associated rich cephalopod fauna is different from the Darriwilian cephalopod associations of the Alborz terrane and may show some affinity with warm water faunas of North China and South Korea. It is likely that the Mid Ordovician fauna recovered from the lower part of the Chahgonbad Formation settled in the area sometime during a warming episode in the late Darriwilian. By contrast the low diversity mid Katian brachiopod association includes only three taxa, which occur together with the trilobite Vietnamia cf. teichmulleri and abundant, but poorly preserved tentaculitids questionably assigned to the genus Costatulites. This faunal association bears clear signatures linking it to the contemporaneous cold water faunas of the Arabian, Mediterranean and North African segments of Gondwana. Four brachiopod species recovered from the Chahgonbad Formation, including Hibernodonta lakhensis, Hindella prima, Lomatorthis? multilamellosa and Yangtzeella chupananica are new to science.
    Źródło:
    Acta Geologica Polonica; 2015, 65, 4; 403-435
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristic and efficiency of operation of the unit for non-plough soil cultivation and the cultivation and sowing unit in conditions of the eastern European part of Russia
    Charakterystyka i efektywność pracy agregatu do bezorkowej uprawy gleby i agregatu uprawowo-siewnego w warunkach wschodniej europejskiej części Rosji
    Autorzy:
    Kozłowa, L.
    Noskova, E.
    Popov, F.
    Demśin, S.
    Ćeremisinov, D.
    Kamiński, E.
    Żebrowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/93843.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    farm machine
    cultivation tool
    cultivator
    subsoiler
    sowing machine
    maszyna rolnicza
    narzędzie uprawowe
    kultywator
    głębosz
    siewnik
    Opis:
    The article contains technical description of the tool and the unit used for basic and pre-sowing soil cultivation and sowing: a combined unit for basic non-plough soil cultivation and the cultivation and sowing unit. Results of the research on the efficiency of their use in the soil and climatic conditions of the north and eastern European part of Russia were presented. The analysis of the agrophysical properties of soil showed that the relative moisture of soil in the 0-10 cm layer did not depend on the manner of the basic and pre-sowing cultivation, but in the 0-20 cm layer the decrease of the soil moisture by 0.9-1.4% was reported after the use of KBM -4,2 cultivator and after cultivation with with APPN-2,1 (LSD05=0.63) unit. All the tested units ensured optimal density of the cultivated layer of the sod podzol soil within 1.1-1.3 g·cm-3. The water content of soil in the cultivation of winter rye in the non-plough cultivation with KPA-2,2 unit was higher by 1.5 mm in comparison to cultivation after ploughing (LSD05=0.51). No differences were reported in cultivation of vetch with oats. A non-plough cultivation of soil was also characterized with better values of indexes of the grain size distribution in comparison to the plough. The use of the cultivation and sowing unit APPN-2.1allowed decrease of energy inputs by 366 MJ·ha-1 (45.7%) compared to the total inputs on cultivation with KPS-4,0, fertilization and sowing. Sowing with the unit APPN-2.1 influenced the increase of the winter rye yield by 0.88 t·ha-1 compared to cultivation with KPS-4,0 and plough (LSD05AB=0.8). In the conditions with the use of APPN-2,1 the yield of dry mass of vetch and oats was higher by 0.75 t·ha-1 compared to the variants with KBM-4,2 (LSD05B=0.39).
    W artykule zamieszczono charakterystyki techniczne narzędzia do podstawowej i agregatu do przedsiewnej uprawy gleby i siewu: kombinowanego agregatu do podstawowej bezorkowej uprawy gleby, agregatu uprawowo-siewnego. Zamieszczono wyniki badań nad efektywnością ich zastosowania w warunkach glebowo-klimatycznych północnego wschodu europejskiej części Rosji. Analiza właściwości agrofizycznych gleby wykazała, że wilgotność bezwzględna gleby w warstwie 0-10 cm nie zależała od sposobu uprawy podstawowej i przedsiewnej, natomiast w warstwie 10-20 cm stwierdzono obniżenie wilgotności gleby o 0,9-1,4% po kultywatorze KBM-4,2 i uprawie agregatem APPN-2,1 (LSD05=0,63). Wszystkie badane agregaty zapewniały optymalną gęstość warstwy uprawnej gleby darniowo-bielicowej w zakresie 1,1-1,3 g·cm-3. Zasobność wodna gleby w uprawie żyta ozimego w uprawie bezorkowej agregatem KPA-2,2 była wyższa o 1,5 mm w porównaniu z uprawą po orce (LSD05=0,51). W uprawie mieszanki wyki z owsem różnic nie stwierdzono. Bezorkową uprawę gleby charakteryzowały również lepsze wartości wskaźników składu granulometrycznego w porównaniu z polem po orce. Energochłonność uprawy bezorkowej była o 334 MJ·ha-1 (32,6%) mniejsza w porównaniu z orką. Zastosowanie agregatu uprawowo-siewnego APPN-2,1 pozwoliło obniżyć nakłady energetyczne o 366 MJ·ha-1 (45,7%) w porównaniu z sumarycznymi nakładami na kultywację KPS-4,0, nawożenie i siew. Siew agregatem APPN-2,1 wpłynął na zwiększenie plonu żyta ozimego o 0,88 t·ha-1 w porównaniu z kultywacją KPS-4,0 i orką (LSD05AB=0,8). W warunkach z zastosowaniem APPN-2,1 plon suchej masy wyki i owsa był wyższy o 0,75 t·ha-1 w porównaniu z wariantami z KBM-4,2 (LSD05B=0,39).
    Źródło:
    Agricultural Engineering; 2014, 18, 4; 151-163
    2083-1587
    Pojawia się w:
    Agricultural Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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