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The Federal State Budgetary Scientific Institution "Central Scientific Agricultural Library" (CSAL) is the oldest Bibliographic Center for Agricultural Science and Food Industry in the Russian Federation. The library was founded in 1930. More than 3 million items are stored in the library collection. Since 1992, CSAL has been managing AGROS, the largest agricultural database in Russian in the world. This database contains information about books and articles published both in Russian and foreign periodicals or serial editions (the annual increm [...]

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Journal Article

期刊文章

Pressure of the artificial rain drops on the soil  [2018]

Zver'kov, М.S., All-Russia Research and Development Inst. of Irrigation Systems and Agricultural Water Supply "Raduga", Moscow Region (Russian Federation);

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The study is aimed at preventing and eliminating accelerated anthropogenic erosion and carrying out the required erosion control measures. At the moment when rain drops hit some stresses occur in the soil which is called vertical effective pressure pe. The equation for calculation pe is proposed in this study using the known range of raindrops. Effective pressure pe = 1.4 Pa (coefficient of variation Cv = 0.43, significance level p less than 0.05) of the artificial rain by the sprinkler machine "Fregat" was calculated using the range of raindrops at an intensity of 0.2 mm/min and drop falling height of 2.2 m. According to the method of B.M. Lebedev the pressure was 0.2 Pa (Cv = 0.01, p less than 0.05) for the same conditions. It is noted that the pressure value according to the proposed method significantly depends on the width of the range studied (correlation coefficient r = 0.94) and the number of raindrops and the number of drops (r = – 0.73). An analysis of the proposed formula has shown that changing the rain intensity along the wring of the sprinkler machine will increasing the number of drops being defined which will influence the increasing the integral value of effective pressure. This corresponds to the sprinkling peculiarities: the more drops fall on the soil surface; the more effect rail will have on the soil. The proposed procedure takes into account the rain-covered area, the known procedure will not. The proposed procedure allows sufficient
ly adequately evaluating the value of admissible rain pressure on soil.
来自期刊
Prirodoobustrojstvo
ISSN : 1997-6011

书目信息

语言:
Russian
类型:
Journal Article
自何时收录于AGRIS:
2019
期:
3
起始页:
100
结束页:
105
所有题名:
"Pressure of the artificial rain drops on the soil"@eng
"Давление капель искусственного дождя о почву"@rus
其它:
"Summaries (En, Ru)"
"4 ill."
"14 ref."
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书目信息

语言:
Russian
类型:
Journal Article
自何时收录于AGRIS:
2019
期:
3
起始页:
100
结束页:
105
所有题名:
"Pressure of the artificial rain drops on the soil"@eng
"Давление капель искусственного дождя о почву"@rus
其它:
"Summaries (En, Ru)"
"4 ill."
"14 ref."