AMELIORATION OF ALKALIZED SOLONCHAK SOILS BY SUBSURFACE GRAVEL BLIND DITCHES AND DESULFURIZED GYPSUM
نویسندگان
چکیده
منابع مشابه
Amelioration of Subsurface Acidity in Sandy Soils in Low Rainfall Regions. I. Responses of Wheat and Lupins to Surface-applied Gypsum and Lime
Amelioration of subsoil acidity using gypsum (CaS04.2Hz0) or lime (CaC03) was studied on sandy textured soils with low water holding capacity in a low rainfall environment. Field trials were established in 1989 at two sites on yellow sandplain soils to investigate whether different rates, sources and combinations of gypsum and lime application could be used to increase wheat and lupin yields. G...
متن کاملAmelioration of Subsurface Acidity in Sandy Soils in Low Rainfall Regions. II. Changes to Soil Solution Composition Following the Surface Application of Gypsum and Lime
Two field trials were sampled to investigate the changes to soil solution chemical properties of a yellow sandplain soil with an acidic subsoil following the application of gypsum and lime to the soil surface in 1989. The soils were sandy textured and located in a region of low annual rainfall (300-350 mm). Soil was sampled annually to a depth of 1 m and changes in soil solution composition wer...
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The energy balance of groundwater flow developed by Oosterbaan, Boonstra and Rao (1994), and used for the groundwater flow in unconfined aquifers, is applied to subsurface drainage by pipes or ditches with the possibility to introduce entrance resistance and/or (layered) soils with anisotropic hydraulic conductivities. Owing to the energy associated with the recharge by downward percolating wat...
متن کاملSubsurface flow in lowland river gravel bars
Geomorphic and hydraulic processes, which form gravel bars in large lowland rivers, have distinctive characteristics that control the magnitude and spatial patterns of infiltration and exfiltration between rivers and their immediate subsurface environments. We present a bedform-infiltration relation together with a set of field measurements along two reaches of the San Joaquin River, CA to illu...
متن کاملChemical Amelioration of Expansive Soils
Expansive soils swell when they absorb water and shrink when water evaporates from them. Hence, lightly loaded civil engineering structures founded in these soils are subjected to severe distress. Therefore, there is a need to ameliorate or improve these swelling soils through some innovative methods. This paper discusses chemical stabilisation of expansive soils, a technique in which chemical ...
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ژورنال
عنوان ژورنال: Applied Ecology and Environmental Research
سال: 2019
ISSN: 1589-1623,1785-0037
DOI: 10.15666/aeer/1704_78657879