Features of the regime of drainage of longterm seasonally permafrost peat soils of Western Siberia

2020 ◽  
pp. 32-36
Author(s):  
Aleksandr Motorin
Keyword(s):  
Western Siberia ◽  
Groundwater Table ◽  
Perennial Grasses ◽  
Peat Soils ◽  
Effective Period ◽  
Air Temperatures ◽  
Annual Grasses ◽  
Excess Moisture ◽  
The One ◽  
Spring Snowmelt

As a result of perennial (1980–2018) field and lysimetric studies, it was found that soil moisture in the presence of permafrost is determined by the amount of moisture consumed by soil and plants for evaporation, on the one hand, and the amount of precipitation in the spring and summer period thicker, on the other. The optimal depth of the groundwater table for the south of the Tyumen region lies within: annual grasses – 0,9–1,1, perennial grasses – 0,7–0,8 m. In order to eliminate the accumulation of excess moisture in the groundwater level from the end of the effective period in the frozen layer before the beginning of freezing, air temperatures are reduced to 1,6–2 m and maintained at this depth until spring snowmelt. During the period of snowmelt, they do not dump the melt water, but use it to raise groundwater to a depth of 0,8–1,1 m and maintain this level until the end of the effective air temperature period. The required depth of the groundwater table is ensured by using drainage in the marshes of low floodplain terraces and open channels on the peatlands of the watersheds.

Fertility of peat soils in Western Siberia

2020 ◽  
pp. 16-22
Author(s):  
Aleksandr Motorin
Keyword(s):  
Low Power ◽  
Western Siberia ◽  
Nitrate Nitrogen ◽  
Peat Soil ◽  
Average Power ◽  
Perennial Grasses ◽  
Available Phosphorus ◽  
Optimal Range ◽  
Peat Soils ◽  
Gley Soil

The smallest moisture capacity in medium-thick peat soil in a meter layer is 671,2 mm, which is 19,3 % more than that of low-power and 38,9 % peat-gley soil. During the formation of the first mowing of perennial grasses, the moisture reserves in the 0,5‑meter layer were always in the optimal range (0,7–0,9 HB). The lack of moisture during deep occurrence of groundwater (1,2–1,6 m) causes a decrease in the yield of the second mowing of perennial grasses by 46–89 % in peat-gley soil and 25–40 % in medium-power soil. The arable layer of peaty-gley soil contains 4,4 times more nitrates than the average power. Without fertilizing after 3 years, the amount of nitrate nitrogen in peaty-gley soil is reduced by 1,9 times, low- and medium-power soil – by 2,3–2,4 times. The amount of nitrate nitrogen is more than that of ammonia, in peat-gley soil 4 times, low-power – 3,5 times. Reserves of available phosphorus in the arable layer of peaty-gley soil are 2,5 times greater than in lowpower, and 3,1 times in average power. Without fertilizing after 4 years, in the arable layer of peaty-gley soil under perennial grasses, the content of available phosphorus decreased by 45,4 %, in low-power – by 20,5 %, in medium-power – by 15,8 %. The advantage in potassium reserves in the arable layer belongs to peaty-gley soil and is due to its high content in the underlying mineral peat. In peaty-gley soil, the decrease in potassium reserves down the profile is 1,6 times; in thin soil – 3,2 times; average power – 2,5 times. Hay productivity of perennial grasses on peaty-gleyic soil is respectively higher by 8.3 and 24,5 % than on low- and medium-power peaty soils. A crucial role in increasing the yield of herbs and gaining increases is played by the nutritional regime.

Modes of agricultural use, productivity and fertility of developed lowland peat soils

2020 ◽  
Author(s):  
Aleksandr Glubokovskih
Keyword(s):  
Crop Rotation ◽  
Peat Soil ◽  
Perennial Grasses ◽  
Peat Soils ◽  
Fodder Crop ◽  
Agrochemical Properties ◽  
Agricultural Use ◽  
Fodder Crop Rotation

The results of many years of research on the cultivation of crops in fodder crop rotation on dried peat soil are presented. A productive and agroecological assessment of crop rotation with various saturation with perennial grasses is given. The data on the reduction of peat reserves and changes in the agrochemical properties of the soil are presented.

Productivity of the forage of perennial grasses and their mixtures on drained peatlands

2016 ◽  
Vol 2 (91) ◽  
pp. 74-79
Author(s):  
V.H. Kurhak ◽  
M.I. Shtakal ◽  
V.M. Shtakal
Keyword(s):  
Dactylis Glomerata ◽  
Dry Weight ◽  
Phleum Pratense ◽  
Bromus Inermis ◽  
Metabolizable Energy ◽  
Perennial Grasses ◽  
Forest Steppe ◽  
Left Bank ◽  
Peat Soils ◽  
High Productivity

There showed the productivity, chemical composition of feed and the timing of mowing of grass and variety mixes of permanent grasses on drained peat soils of Left Bank Forest-Steppe of Ukraine. The presence of early rip­ ened seeded grass provides a uniform supply use mowed mass from middle May until the end of September and the productivity of lands, which ranges from 10 to 14 t/ha of dry weight, metabolizable energy – 100.0 – 130.0 GJ and feed units 7-11 t/ha. Additional manuring of N90 on the background Р45К120 is effective at the start of second year of use. On the organization of hay conveyors of different ripening time herbages is possible to extend the optimal tim­ ing of mowing of green mass to 25-35 days. Best among the early-maturing grass crops are Dactylis glomerata va­ riety Kyivska rannia-1 with Alopecurus pratensis variety Sarnenskiy ranniy or its mixture with Bromus inermis and Festuca pratensis. With medium ripening – pure sowing eastern fescue of variety Lyudmila, Phalaris arundinacea variety Sarnenski-40, Bromus inermis variety Arsen and their compounds. High productivity of late-ripening herb­ age is provided by the inclusion in the composition of grass mixtures of Phleum pratense L. variety Vyshgorodska and Dactylis glomerata of variety Ukrainka, and Agrostis gigantea Roth variety Sarnenska piznia. It is also possible organization hay conveyors of different ripening varieties of Dactylis glomerata varieties Kyivska rannia, Muravka, Ukrainka.

Effect of Artificial Grassland Establishing on the Vegetation Restoration in the Degraded Ecosystem

2014 ◽  
Vol 955-959 ◽  
pp. 3474-3478
Author(s):  
Tie Jun Sun
Keyword(s):  
Species Diversity ◽  
Community Composition ◽  
Early Period ◽  
Vegetation Restoration ◽  
Bromus Inermis ◽  
Perennial Grasses ◽  
Species Number ◽  
Composition And Structure ◽  
Degraded Ecosystem ◽  
Annual Grasses

Experiment was executed to plant Bromus inermis artificially in the degraded ecosystem, and study effect of grass planting on vegetation restoration. The results indicated that natural vegetation restored rapidly in the degraded ecosystem in two years after grass planted. But species diversity changed little in the early period of vegetation restoration, while vegetation biomass, coverage and anti-interference improved quickly. In addition, species number and important value of perennial grasses increased while those of annual grasses decreased. Then community composition with annual plants mainly changed gradually into that with perennial plants mainly after Bromus inermis planted. However, overground biomass and coverage of restored vegetation and dominance of Bromus inermis planted decreased after vegetation cut once a year. And species diversity and important value of annual grasses increased. Thus it could be good for uniformity of species distribution and stability of community composition and structure to develop.

Physiological and biophysical limits to work in the heat for clothed men and women

1978 ◽  
Vol 44 (6) ◽  
pp. 918-925 ◽  
Author(s):  
E. Kamon ◽  
B. Avellini ◽  
J. Krajewski
Keyword(s):  
Steady State ◽  
Vapor Pressure ◽  
Physiological Responses ◽  
Men And Women ◽  
Mean Values ◽  
Air Temperatures ◽  
Significant Difference ◽  
The Mean ◽  
Evaporative Heat Transfer ◽  
The One

Heat-acclimated, lightly clothed men and women (four of each) walked on a treadmill at 25% and 43% VO2 max, respectively, (M =194 W.m-2), under seven air temperatures (Ta) ranging from 36 to 52 degrees C. Each experiment involved 1 h of fixed and a 2nd h of progressively increasing ambient vapor pressure (Pa). The relative steady state of rectal temperature (Tre), mean skin temperature (Tsk), and heart rate (HR) reached in the 1st h were forced upward during the 2nd h by the rising Pa. The critical air vapor pressure (Pcrit) was identified by the Tre point of inflection for each Ta. One man did not fully reach steady state, but inflection could be determined for his physiological responses. The mean values of all points of inflection were calculated for Tre, Tsk, and HR. Significant sex difference in HR was found only by excluding the results of the one man. Tre and Tsk showed no significant difference between men and women. The coefficient for evaporative heat transfer (he), which could be derived using the Pcrit for the low Ta range, was 14.5 +/- 2.2 W.m-1 Torr-1.

scholarly journals The influence of feed quality from peat soils on the productivity of cattle

2021 ◽  
Vol 901 (1) ◽  
pp. 012017
Author(s):  
A N Ulanov ◽  
V N Kovshova ◽  
O G Mokrushina ◽  
A V Smirnova ◽  
A L Glubokovskih ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Human Activity ◽  
Feed Additives ◽  
Perennial Grasses ◽  
Resource Saving ◽  
Peat Soils ◽  
Genetic Potential ◽  
Mineral Soils ◽  
Livestock Products

Abstract In the context of the implementation of environmental, resource-saving systems of agriculture, research in the system of biogeocenosis is very relevant: soil – plant-feed-animal-livestock products. Peatlands and developed peat soils are a kind of environment for human activity in this system. As a result of many years of research, it was found that perennial grasses grown on peat soils have differences in chemical composition compared to plants grown on mineral soils. They contain more organic matter and raw protein. However, their digestibility of nutrients is lower than in herbs grown on mineral soils. Therefore, for a full-fledged balanced feeding of cows, the realization of the genetic potential of animal productivity, and the preservation of their health, scientifically-based diets are necessary, developed on the basis of bulky feeds obtained from peat and developed soils, with the introduction of appropriate feed additives in them.

scholarly journals Analysis of the material culture and new radiocarbon dating of the Early Neolithic site of Amnya I

2019 ◽  
Vol 8 (2) ◽  
pp. 149-159
Author(s):  
Ekaterina Nikolaevna Dubovtseva ◽  
Lubov Lvovna Kosinskaya ◽  
Henny Piezonka
Keyword(s):  
Material Culture ◽  
Western Siberia ◽  
Northern Taiga ◽  
Taiga Zone ◽  
Early Neolithic ◽  
Neolithic Site ◽  
Relative Chronology ◽  
The One ◽  
Technological Analysis ◽  
Khanty Mansi Autonomous

The ancient fortified settlement of Amnya I is a unique Early Neolithic site in the northern taiga zone of Western Siberia (Khanty-Mansi Autonomous Okrug, the Amnya river). It is located on a promontory and has three lines of defense and ten dwelling depressions. The structures of the excavated dwellings are very similar, though the artifact assemblage appears rather heterogeneous. We carried out a technical and technological analysis of ceramics, which showed no correlation between the texture, on the one hand, and the morphology and ornamentation of pots on the other one. Planiographic analysis of ceramics showed that vessels with comb and incising patterns are found in different dwellings, although there are objects in which both groups lie together. Various categories of stone implements (bladelets and polished arrowheads) also appear on different parts of the settlement. Most likely, the observed differences in the artefact complexes of objects are associated with the stages of the functioning of the settlement. The absolute chronology does not yet clarify the sequence of erection and existence of objects. New AMS date is probably vulnerable to a significant reservoir effect. The abundance of unsolved issues of absolute and relative chronology makes the resumption of research on this unique site urgent.

Forage production for dairy farming in terms of the Research Station “Poyma”

2021 ◽  
pp. 8-16
Author(s):  
А.А. Анисимов ◽  
П.И. Комахин ◽  
В.Н. Золотарев
Keyword(s):  
Animal Husbandry ◽  
Perennial Grasses ◽  
Research Station ◽  
Forage Production ◽  
Forage Crops ◽  
Animal Product ◽  
Advanced Experience ◽  
Stable Production ◽  
Annual Grasses ◽  
Silage Production

Важнейшей проблемой продовольственной безопасности страны является уровень обеспеченности населения молочными продуктами. В связи с этим большое значение имеет опыт работы передовых хозяйств такого профиля в определённых почвенно-климатических и природно-экологических условиях. ФГБУ «Опытная станция «Пойма» является одним из наиболее эффективных хозяйств в Московской области по производству молока. Общая площадь сельскохозяйственных угодий составляет 6135 га, из них 2000 га пашни. В структуре посевных площадей 95% и более занимают кормовые культуры, в том числе 12–14% — однолетние травы, 68–70% — многолетние травы и природные кормовые угодья, 15–16% — кукуруза на силос. Основное производство кормов сосредоточено на высокоплодородных пойменных землях, на долю которых приходится 84% кормовых угодий. В статье изложены результаты системного применения достижений науки и передового опыта по стабильному производству высококачественных объёмистых кормов. Проведён анализ состояния кормопроизводства и животноводства хозяйства с 1982 по 2020 год, освещены научные подходы к увеличению производства кормов и животноводческой продукции. Системное освоение передовых научных разработок по созданию высокопродуктивных кормовых посевов и стабильному производству высококачественных объёмистых кормов, их рациональному хранению и использованию, техническая модернизация позволили увеличить среднегодовой надой на корову с 4079 до 9708 кг, или более чем в 2,3 раза, при одновременном снижении расхода кормов на 1 кг молока с 1,37 до 0,90 корм. ед. при повышении рентабельности с 16 до 28%. Food safety of the country is highly affected by the availability of milk products. Therefore, the experience of leading farms is of great importance under certain environmental conditions. The Research Station “Poyma” is one of the leading milk producers in the Moscow region. Its fields occupy around 6135 ha. The proportion of forage crops amounts to 95% including 12–14% of annual grasses, 68–70% of perennial grasses and natural forage lands as well as 15–16% of maize for silage production. 84% of the total cultivation area are high-fertile floodlands. This article focuses on the application of the latest scientific findings and advanced experience for stable production of high-quality bulk fodder. The efficiency of forage production and Animal Husbandry was analyzed in the period from 1982 to 2020. The methods and practices were reviewed to optimize forage and animal product resources. Average annual milk yield was improved from 4079 to 9708 kg per cow, or by more than 2.3 times due to the introduction of the latest findings into the production process including the cultivation of high-productive forage crops, stabilization of bulk fodder supplies, feed effective storage and use. Forage consumption dropped from 1.37 to 0.90 feed units for the production of 1 kg of milk, payback increased from 16 to 28%.

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