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Wyszukujesz frazę "Astafyev, Vladimir L." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Assessment of methods of the autumn-winter moisture accumulation in poor draining soil in the arid region of Northern Kazakhstan
Autorzy:
Astafyev, Vladimir L.
Ivanchenko, Pavel G.
Powiązania:
https://bibliotekanauki.pl/articles/1844371.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
arid region
coulisses
chiselling
moisture accumulation
over crusting soil
Opis:
In the initial stage of the growing season, the accumulation of autumn and winter precipitation moisture in poorly draining soil in arid conditions in the Northern region of Kazakhstan was a serious production problem. Research methods included measurements of autumn and winter moisture reserves in poorly draining soil and snow on the backgrounds of ordinary stubble, stubble coulisses and tall stubble left after stripper header (continuous combing) with and without autumn chiselling. The study revealed that the use of the continuous combing and stubble coulisses on poor draining soil: (a) supports reserves of moisture in autumn soil; (b) the lack of chiselling leads to increased water runoff and the formation of limans in the fields. The use of stubble coulisses during snowy winters allowed moisture reserves in the snow to be increased in comparison with the stubble background. The use of chiselling on the background of stubble coulisses allowed: (a) to reduce runoff moisture loss in poorly draining soil by 35–50% after snowy winters, by 25–35% after little snowy winters, and prevent the formation of limans in the fields; (b) in comparison with the stubble background to increase the total re-serves of autumn-winter moisture in poorly draining soil by 61–105 mm in favourable years, and by 57 mm in years with the low autumn-winter precipitation. The use of chiselling on a stubble background did not significantly affect the total reserves of autumn-winter moisture in poorly draining soil.
Źródło:
Journal of Water and Land Development; 2021, 48; 115-121
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of scheme and tillage tool parameters on the material consumption and performance of chain tooth harrow
Autorzy:
Astafyev, Vladimir L.
Kurach, Alexandr A.
Amantayev, Maxat A.
Powiązania:
https://bibliotekanauki.pl/articles/1841961.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
arid conditions
chain tillage
chain tooth harrow
experimental studies
serial harrow
soil moisture
Opis:
The accumulation of moisture from autumn and winter precipitation in poorly draining soil for plants in arid conditions during the initial stage of the vegetation period in the northern region of Kazakhstan was a severe production problem. Research methods included theoretical and experimental studies. In theoretical studies, the area of the treated surface by a chain harrow is determined. Then, the design of an improved harrow is proposed, including how the tooth chain tillage tools are positioned. Either as a “single action disc harrow” type with mounting four teeth on each chain link, or as a serial harrow with the tooth chain tillage tools located in a “diamond-shaped” double-action scheme with two teeth on each chain link. Experimental studies show that an improved harrow steadily performs the early spring harrowing process with a quality that meets normative requirements. In doing, so the working capacity is 4–5% higher than a serial harrow with a 4–5% lower fuel consumption. Furthermore, it is revealed that the early spring soil harrowing performed by tooth chain harrows allows the loss of productive moisture in the spring pre-sowing period by 1.8–1.9 times to be reduced compared to the untreated background.
Źródło:
Journal of Water and Land Development; 2021, 50; 69-73
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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