SU1456842A1 - Method of determining aeration porosity of non-capillary porosity - Google Patents

Abstract

The invention relates to the field of agriculture and forestry and can be used to regulate the water and air regimes of soils in land reclamation. Chain invented Shadowing is a reduction in labor intensity and an increase in accuracy of determination. According to the proposed method for determining porosity a: walkie-talkies or non-capillary porosity, including the selection of sites, delimiting them with metal plates and clay from the sides, and from the bottom picking up a tray and clay, taking into account the surface area the runoff and the occurrence of subsurface runoff, fixed at the level or a receiving tray on a special viewing platform. The soil aeration porosity is calculated based on the difference between the total water consumption before the occurrence of subsurface runoff and the surface runoff divided by the soil volume of a limited area. S (l

Description

one

The invention relates to the field of forestry and agriculture and can be used for the scientifically-based determination of irrigation periods and norms in order to improve the productivity of plants, in particular, forest vegetation in parks and forest parks, in growing special forest plantations and shelter shelters under irrigated conditions .

The purpose of the invention is to reduce the labor intensity and improve the accuracy of determining the porosity of aeration.

The essence of the proposed method lies in the fact that it is isolated

on three sides of the site, and on the lower part of the site a receiving tray is installed, in which the amount of water flowing over the soil surface is taken into account in a volumetric way. Soil saturation is carried out by sprinkling with a watering can or rain plant no more than 40% of the area, starting from the top, which significantly reduces the amount of trapped air in the soil. When the soil is saturated, the amount of water that saturates the soil to full capacity is determined, and it is the baseline value for oSPG1.

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31D56842

determining the pore volume of aeration. The occurrence of surface and then internal soil runoff recorded in a special viewing platform below or at the level of the receiving tray indicates that air is completely replaced by water. The porosity of soil aeration P is determined by the formula

de

P K3 |, c (U, ijij

V

 - Vnc

%

V

PS

with"

- obgtsy water consumption before the appearance of in-situ flow,

- the volume of water that has drained over the surface of the site, before the appearance of subsurface flow;

- volume of soil layer, m,

f

op. method of determining porosity of aeration or non-capillary porosity, including the selection and limitation of the site with metal plates, and

from the bottom, the latency, saturation of the soil with moisture, determining the volume of the soil and the total flow of water to it and to the surface runoff, and then calculating the porosity of soil aeration, characterized in that, in order to reduce labor intensity and accuracy,

Q soil saturation with moisture is performed by sprinkling its surface before the occurrence of subsurface flow recorded under the receiving tray, while the porosity P of soil aeration

5 is determined by the formula

Vo - Vnc

v

P

 and 3po (u, uu where V

%

- total water consumption before the occurrence of subsurface

drain, cm;

ps - the volume of water, steyuley on the surface of the site, until the occurrence of subsurface 5stock,

cn volume of soil layer, m

Claims (1)

SUMMARY OF THE INVENTION A method for determining the porosity of aeration or non-capillary duty cycle, including selecting and limiting the area by metal plates, and from the bottom by a receiving tray, saturating the soil with moisture, determining the soil volume and the total water consumption for saturation and surface runoff, with subsequent calculation of the aeration porosity soil, characterized in that, in order to reduce the complexity and improve the accuracy of determination, the soil is saturated with moisture by sprinkling its surface until the appearance of subsoil runoff, fixed under the receiving tray, while the porosity P of soil aeration is determined by the aeration formula where - total water consumption before the appearance of subsoil runoff, cm ³ ; - the volume of water draining along the surface of the site, until the appearance of subsoil runoff, cm ³ ; - the volume of the soil layer, m ^e 'Compiled by A. Brovko.