SU646971A1 - Method of preventing fouling of drenage water with herbicide on rice irrigation sysiems - Google Patents

Description

(54) METHOD FOR PREVENTION OF DRAINAGE WATER DRAINAGE WATER BY HERBICIDES ON RISK IRRIGATING SYSTEMS To do this, the OCMUs make a layer under the root layer of not less than 10 cm thick that is applied to the area under the occlusion and all the areas are cleaned. with the inclusion of substances of humus nature in the following ratio, weight. %: Loam 65-70 Gumachy sodium ammonium 0.2-1.0 Water Else. For high water permeability & soil, potassium chloride or ammonium chloride in an amount of 0.2-2.0 wt.% Is additionally added to the composition of the juice. During the construction, reconstruction or during the overhaul of the rice irrigation system on the part of the check adjacent to the drain, 0.10-0.15 wide, the length from the drain to the irrigator removes the root habitable layer of the soil. From & spit a homogeneous pasty mass of 6570 wt. % loam containing no less than 18.1-2% or 1X particles, 0.2-1.0 sodium hywaToB or. ammonium and water Potassium chloride or ammonium chloride in the amount of 0.2-2.0 wt.% Is additionally introduced for soil-gruotite with high water permeability. Then the paste is placed evenly slsum (not less than 10 cm thick) on the Bl1fpbifyto strip of rice check and the earth shaft, section 5 of the drain check from the drain. l

Table 714 the maximum water level in the check for flooding. After laying the pasty layer close it with previously removed soil and create a root habitable layer. The layer provides for the retention of herbicides and their metabolites dissolved in the filtering water. : Sodi of humic acids form a strong organo-mineral complex with clay particles, which actively sorbs herbicide1. The introduction of humic substances increases the biological activity of the soil, as a result of which the herbicides detained by the layer decompose during one growing season. Example. In experimental cases with sandy soils at a depth of 4050 cm, a layer of paste was created consisting of 70% loam, 29% water and 1% humus substances extracted from ammonium water from peat. Then poured root habitable layer. In order to obtain data on the control files, a loamy layer was laid without adding humus ve; 7 processions. Soil and rice crops were treated with herbicides — propanide and hormone. The amount of water filtration as a result of the creation of an interlayer has decreased from 1.8 ° m / day to 0.007 m / day. Samples of drainage water were periodically taken and analyzed on the Tsvet-YuO chromatograph (model OO6) for the presence of herbicides. The results of the experiment are summarized in table 1.

Example 2. In experienced micro. checks on soddy underdeveloped sandy soil at a depth of 40 cm created a layer of 67.6% loam, 1.2%

potassium chloride, 0.2% ammonium chloride, 0.2% sodium humates and 30.8% water. On the layer was laid root layer. Soil and sowing crop5 .6469716

Battapi propane and periodic. Iida in samples of drainage water. The results of determining the content of islands and the experience gerbates are summarized in Table 2. The content of propanide residues in drainage waters, µg / l

.Table