SU1231120A1 - Land reclamation system - Google Patents

Description

"1231120

the invention relates to a melior and according to others

of

The purpose of the invention is to provide two-way control of the air-flow and nutrient regime of the soil.

The drawing schematically shows a reclamation system, a section.

The system contains drains 1, drainage bed 2, a loosened layer 3 of soil and soil, including a deep loosening zone A along the drainage route, the smallest loosening zone C in the inter-axis (most wide due to the gentle position of the depression curve in the inter-axis) and located between With them, the middle zone of loosening B, shelf 4 with a reverse bias relative to the depression curve, arable layer 5, unburnt soil 6. The position of the depression curve (or the averaged forming loosened strips) in the drawing is indicated by the position 7.

The ameliorative system is constructed as follows.

The soil is loosened with the greatest depth in the direction of drains, usually designed, at least on a part of the dried area, parallel to each other. Then drains are laid along loose tracks. At the same time, traction forces for the stacker are significantly reduced. The next strip of loosening is performed. depths of loosening of the strip under the drain with zero or reverse slope (across the strip of loosening within it). Dp 3Tord ripper teeth can be installed at different depths. Reverse slopes across the loosening strip (within the limits of each following one) ensure the creation of pockets in which moisture is stored, which is then consumed during droughty periods to feed the root zone. Stripe size (width

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Compiled by I.Sel Metov Editor M.Dypyn Tehred L.Oleinik Proofreader V.Sinitsa

Order 2543/33 Circulation 641. Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

ten

15

20

25

 and length), their transverse slope and their height relative to each other are selected in such a way as to ensure maximum moisture in the pockets in the middle part between drains (where the soil thickness is loose and its moisture capacity is the lowest), as well as the general general slope to drains in accordance with the depression curve in the drainage mode.

The system works as follows.

Water that is found in the soil in the mode of drainage moves to closed drains 1, successively flowing from one shelf 4 to another, being held in pockets in the calculated (necessary) volumes. From these pockets during dry periods, the moisture reserves are spent on feeding the root zone. If necessary, moisture in these pockets can be supplied artificially through drainage.

Making longitudinal loosening strips with a transverse inclination, inverse to the depression curve, allows not only to use the formed pockets to accumulate some of the moisture in order to spend it during dry periods of the l, capillary feeding of the root zone, but also to fill them with gravitational moisture during water supply on moisture through drainage. Loosening zones can be with zero or reverse transverse slope due to the fact that pocket volume can be arranged at different distances from drains and in each strip can be chosen so that with increasing depth of loosening the accumulated water volume is ; the largest (since the area being drained is greatest here).

Claims (2)

1. MELIORATIVE SYSTEM, including drainage and a soil layer loosened between drains, decreasing towards the middle of the inter-drainage area, it is clear from the fact that, in order to ensure two-way regulation of water-air and soil nutrient regimes, the loosened layer is made in the form strips located along the lines of drains with a width increasing toward the middle of the interdrain, and with a slope inverse to the depression curve. 2. The system according to claim 1, which implies that the slopes of the shelves are made decreasing towards the middle of the interspacing. 1 I 2311 20