SU1067026A1 - Method for meliorating sandy soils - Google Patents

Abstract

1. METHOD OF SALTED SOILS RECOVERY, including the creation of a layer in the subsurface horizon based on a water suspension of the soil with the addition of silicone, in particular, in order to reduce the loss of water and nutrients from the soil during cultivation. of the plants, sand and, additionally, sludge are introduced into the interlayer as a soil, in the following ratio, wt.%: 20,000-22,000 Water 8,000-12,000 Silt 0.001-0.010 Silicone Sand Rest 2. The method according to claim 1, characterized in that the interlayer (/) is 0.5-1.5 cm thick.

Description

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Oi The invention relates to a method of soil amelioration by creating anti-filtration screens that adsorb nutrients and then gradually feed them to plants, and can be used to grow agricultural plants on easily drained sandy soils. The known method of preplant preparation of sandy soils, including the creation of a water-retaining layer with a low filtration coefficient based on clay suspensions of varying degrees of dissonance, si. . However, the screen has a weak sorption capacity and does not prevent the leaching of nutrients from the sandy soil. A method of reclamation of sandy and sandy sandy soils is also known, including the creation of a layer 2–4 cm thick in the subsoil level. As a layer, the composition C2 is used in the following ratio of components, wt.%: Clay 40.00-50.00 Liquid manure 18.00-20.00 Low-grade phosphites 12 ;, 00-15.00 Surface-active substances 0.10-0. 15 Clinoptilolite 5.00-8.00 Water Remaining However, the used layer does not allow to sufficiently reduce the loss of water and nutrients from the soil. The purpose of the invention is to reduce the loss of water and nutrients from the soil when growing plants. The goal is achieved by the method of reclamation of sandy soils creating a layer in the subsurface horizon based on a water suspension of soil, which is sand with the addition of silicone and silt. the following ratio of components, May.%: Water 20,000-22,000 IL 8.00 - 12.00 Silicone 0.001-0.010 Sand Else Moreover, the interlayer is created with a thickness of 0.5-1.5 cm at a depth of 40 to 60 cm. Silicone oils are used as silicone brand GKZH- 10 or NGL-11 (6-02-696-76; as well as ethyl silicate or sodium methyl silicate. Silt, which is a waste of the pulp and paper industry (specific weight 1.52-1.62 g / cm), has the following composition,%; Organic substance 68,5-68,7 Mineral substance 31.3-31.5 Nitrogen1.95-8.10 Phosphorus1.2-1.3 Potassium0.9-1.0 Calcium1.8-1 , 92 Iron1.0-1.1 Manganese 0.02-0.03 Copper0.02-0.03 Zinc0.06-0.07 Example: In any container, for example, in a dug pit, by thoroughly mixing the hydraulic components with hydraulic pumps, %: water 22, silt 8, silicone (NGL-101) 0.05 and sand - the rest, is prepared to be uniformly suspended uw. At the same time, the remains of vegetation are removed from the surface of the sandy soil, its roughness is leveled and the layer is removed from 40 to 60 cm deep. Then, the suspension is hydraulically fed to the prepared layer to form a layer 1.5 cm thick. The resulting layer is covered by the previously removed soil layer. Fertilizer is applied to the topsoil. The active substance per hectare and after irrigation determine the water loss and the amount of nutrients washed from the soil. The characteristics of the various embodiments of the interlayer and its practical advantages are presented in the table.

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QUsing the proposed method prevents the leaching of nutrients ;; but

Namely, the loss of nitrogen at such a thickness of the interlayer decreases to zero, and the loss decreases in comparison with the method of the prototype by 2-3 times.

Creating an interlayer with a thickness of less than 0.5 cm is technologically difficult, and the interlayer of such thickness is qualitatively inhomogeneous and unstable to mechanical effects.

Making the slider thicker than 1.5 s is not economically feasible, since the thickness of the layer more than 1.5 cm is practically not affected by the physico-chemical and adsorption properties of sandy soils.

The depth of the laying of the 40-60 cm interlayer is established from the condition that up to 80% of the root system of the Research Institute is located at the specified depth. In addition, according to the technology of cultivation of agricultural crops on sandy soils, it is recommended to cultivate them

up to 40 cm

Growing alfalfa using this method compared to the method of the prototype provided an increase in the yield of seeds

alfalfa by 40.5-43.4% and led to a decrease in NPK leachability by 3 times.

Claims (2)

1. METHOD FOR SANDING SOIL SOILS, including the creation of a layer in the subsurface horizon based on an aqueous suspension of soil with the addition of silicone, distinguishes us in that, in order to reduce the loss of water and nutrients from the soil during cultivation. plants, sand and additionally sludge are introduced into the interlayer as soil, in the following ratio of components, wt.%: Water 20,000-22,000 Silt 8,000-12,000 Silicone 0.001-0.010 Sand rest 2. The method of pop. 1, characterized in that the interlayer is 0.5-1.5 cm thick. SU, 1067026