SU1276273A1 - Method of taming sandhill areas - Google Patents

Abstract

This invention relates to the field of agriculture. The purpose of the invention is to accelerate the process of reclaiming barchan massifs and reduce water losses. The cultivation of barchan massifs is carried out by building an irrigation and drainage network in the area under development, capital planning with minimal surface slopes, washing using turbid water, adding bonded soil and cultivating dry ground crops. But at the same time, the order of development of the plots is complied with, so that in the first place the oasisous or nearby arrays are mastered, and a network of temporary canals are preliminarily set up in the area being mastered, which are deprived of the means of preventing water from being filtered out of them. In temporary canals that serve as continuations of canals laid on oasis lands, water is supplied until the groundwater level in the developed area rises to their level in the oasis section, flushing is performed by flooding the section being mastered. rice is made and only after the introduction of coherent soils, they start cultivation (LEANING of dry land crops.

Description

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Oi HchE

WITH

This invention relates to agriculture.

The purpose of the invention is to accelerate the process and reduce water losses.

The level of groundwater in irrigated oasis lands is high (at a depth of 1-4 m). Accordingly, in the areas of sandy massifs adjacent to them, it is higher than in remote areas. If the irrigation canals of the oases are extended to the sands adjacent to the oases without a priori; 1 planning of the developed areas and without creating an irrigation and drainage system on them, then the temporal canals devoid of filtration prevention means water seeps into the sands and gradually disappears from the ground water . The sands are compacted and weedy vegetation appears on them, which contributes to the enrichment of the sands with plant residues. It is easier to carry out the planning and construction of a capital irrigation and drainage system on compacted, fixed, and mastered weed vegetation.

If the development of a site begins with a plan (without laying a time channel), the loose sands move many times, which leads to a significant increase in labor costs and investment. Subsequent sprinkling with the use of water from capital canals requires considerable water consumption and is ineffective, since in the conditions of the climate of Central Asia, it is accompanied by intense evaporation, overheating of the plants and insufficient supply of moisture. When implementing the proposed method, water is used productively and efficiently, since the closing of the supplied and groundwater creates the most favorable water regime for plants.

When flooded areas being mastered, their washing is intensive, and the simultaneous cultivation of rice in flooded areas leads to an earlier and intensive enrichment of soil with plant residues than when the development of a site begins with the cultivation of dry crops with their sprinkling, as in such conditions the plants oppressed and therefore little productive.

With a gradual rise in the level of groundwater by supplying water through temporary canals, some of the water seeps into adjacent, unused areas, which is accompanied by a partial rise of them from the level of groundwater, as a result of which the transition to their development reduces water consumption and speeds up their reclamation.

Claims (1)

Invention Formula A method of reclaiming dune arrays by building an irrigation and drainage network in a site under development, capitalizing it with minimal surface slopes, washing using turbid water, introducing bonded soils and subsequent cultivation of dry ground crops, which are accelerated and reduced. water, development begins from the site adjacent to the irrigated oasis land, with a high level of groundwater or from the site close to them at the site previously paving time channels network lischennyh filtering means preventing them from water, which is served in them until the groundwater level in the area rises to their level in the oasis area and washing is performed by flooding the area, combining it with rice cultivation.