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Soil salinity in Western Jilin Province Geological environment problems and treatment


Because of the terrain differences. With salt runoff from high-lying ground to sink in the low-lying plains of the low-lying areas, * 22 * in the vertical alternation of evaporation and leaching under the action of salt accumulation in the soil layer and increased the salinity low-lying areas, local affected impact of micro-topography, saline soil erosion by water flow on the accumulation of carrying off the depression, resulting in a redistribution in the horizontal direction. Over the years due to human destruction, reclamation farming, animal husbandry development of the blind, so that the strong degradation of grasslands, the vegetation was severely damaged, wind erosion enhanced wind erosion modulus l265 ~ 6O00m ~ / kma, each of the handling of saline soil by wind erosion are O. 08X10 ~ 0.39 × 10ma, packing down in different places, resulting in secondary salinization of soil, and by the emergence and spread, expand, this situation even in the flower arrangement in this area north of the area Tongyu County in particular. The area before 1975, only about 20 scattered km, is now connected into the film, an area of more than l00 km,[link widoczny dla zalogowanych], soil salt content from 0. I89 rose to 0.307, up 0.642, pH values from 8.3 up to l0.07. Tongyu County, southwest of the original non-saline soils, and now Pat into a moderately saline soil. These data indicate that, soil salinization,[link widoczny dla zalogowanych], the trend has continued to expand and develop. Therefore,[link widoczny dla zalogowanych], a fundamental problem of soil salinity control is imperative. Seven soil salinity 1 3.2 3.2.1 governance principles of governance to carry the principle of combining with the symptoms, root of the problem of drainage is to reduce the water table, the flat terrain of the area, the water level shallow pool, diving runoff discharge conditions are very poor, in order to stop the root soil salinity management must find a way on the water table, the artificial lowering the water table. Temporary solution is to land salt, comprehensive management, combined with the biological treatment rate to take appropriate measures to water conservancy measures, measures foot agricultural,[link widoczny dla zalogowanych], chemical measures spin. 3.2.2 According to the terrain conditions, procedures, unified planning, step by step, select the easy things first, after the first light weight, the edge of the first breakthrough in the development of the flesh of deep, isolated and surrounded reasonable solution. 3.2.3 The methods and measures with biological measures ① Enhance grassland management, animal husbandry, to prevent unauthorized reclamation chaos, the establishment of closed grassland or grass library positions in the periodic system of wheel dare, in a variety of soil conditions permit a number of alkali grassland plants to expand the area of vegetation to promote the ecological environment of the affected cycle measures and agricultural measures ② foot of water: good water planning, the construction of drainage channels by terrain slope. Establishment of a main channel, support channel, connected to the main branch of the drainage network, and rational arrangement of a large underground water wells,[link widoczny dla zalogowanych], mining, building reservoirs, pumping on the surface will be transported to the diving tank for rational use. Water for agriculture measures with measures to expand the development of dry land or irrigated paddy fields, which not only reduces the water table, but also be a reasonable use of diving. Plowing in the paddy field area in order to promote exploration of saline soil structure damage to the soil layer, increasing the soil's permeability and seepage capacity, strengthening the role of the leaching, salt down. In addition, the constantly changing the water can be soaked fields of salt in the soil with water to drain away, reducing the salt Kyrgyzstan. Tai On the west, such as the use of green Tongyu County Groundwater flood of rice has achieved initial success ALKALINE mast, but this method must be reasonable planning, overall consideration on the basis of Jing-line, from high to low-lying topography development, and finally retreated to the local soil salinization through low-lying place. ③ chemical measures: the area K + Na content of the soil layer over sauce than ca, Mg + content, multiple delivery and appropriate delivery of organic fertilizer containing calcium and magnesium silicate minerals (and the District widespread aeolian sand), organic matter by aerobic bacteria can release hydrogen, thereby increasing the concentration of soil water in the H, play a role in and alkali, but also promote the role of chemical weathering of silicate minerals of progress, a dissociation from ca, Mg relatively lower concentration of K + Na, to the purpose of reducing the extent of soil alkalization. In addition, running with calcium and magnesium silicate minerals can play a loose soil structure, soil effect. rate of completion of the text had been comrades in our hospital Zhangshou Fan , Geology and Mineral Bureau Lvhai Chen comrades fine, i-guide, to express my heartfelt thanks.
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