نتایج جستجو برای: ground water level and salinity
تعداد نتایج: 17018224 فیلتر نتایج به سال:
In order to study the effects of salinity of irrigation water on the growth and quality of 10 bermudagrass cultivars under saline soil, a factorial plot experiment using a complete randomized block design with three replications was carried out at College of Agriculture, Isfahan University of Technology in 2002-2003. Ten cultivars under five levels of irrigation water salinity (3.30, 6.93, 10.2...
In order to study the effects of salinity of irrigation water on the growth and quality of 10 bermudagrass cultivars under saline soil, a factorial plot experiment using a complete randomized block design with three replications was carried out at College of Agriculture, Isfahan University of Technology in 2002-2003. Ten cultivars under five levels of irrigation water salinity (3.30, 6.93, 10.2...
abstract this study investigates the teachers’ correction of students’ spoken errors of linguistic forms in efl classes, aiming at (a) examining the relationship between the learners’ proficiency level and the provision of corrective feedback types, (b) exploring the extent to which teachers’ use of different corrective feedback types is related to the immediate types of context in which err...
Salinization and alkalization are considered spatiotemporal dynamic soil degradation processes. In order to investigate the effects of agricultural activities on land degradation and soil salinity, Shamsabad area in Qom province was selected. Aerial photos (1955) and satellite images (1990-2002) were used to examine the changes in land use. Soil samples were collected from 25 locations in the s...
Salinization and alkalization are considered spatiotemporal dynamic soil degradation processes. In order to investigate the effects of agricultural activities on land degradation and soil salinity, Shamsabad area in Qom province was selected. Aerial photos (1955) and satellite images (1990-2002) were used to examine the changes in land use. Soil samples were collected from 25 locations in the s...
to determine the effects of different irrigation and salinity levels on qualitative and quantitative yield of sugar beet, an experiment was conducted for two years (2006-07)at torogh agricultural research center, mashhad, iran, using two sprinkler systems. each of the two irrigation systems was connected to two water sources with 1 and 6 ds/m salinity. irrigation was performed via two sprinkler...
soil and water salinity is a major constraint in arid and semi-arid regions. in order to study the impact of water salinity on physiological characteristics and dry matter production of six linseed genotypes, a 4-replicate factorial randomized complete block pot experiment was conducted. salinity consisted of four levels: 0 (control), 35 (low salinity), 70 (intermediate salinity) and 105 mm (se...
Locations and compositions of submarine ground water discharge (SGD), which constitutes sources to coastal zones of low salinity water, terrestrial contaminants, and solutes with concentrations elevated by diagenetic reactions, may be altered in tropical settings where widespread mangrove forests increase salinity of shallow pore waters through evapotranspiration. The red mangrove (Rhizophora m...
Ground waters in three adjacent regional flow systems in the midcontinent exhibit extreme chemical and isotopic variations that delineate large-scale fluid flow and mixing processes and two distinct mechanisms for the generation of saline fluids. Systematic spatial variations of major ion concentrations, H, O, and Sr isotopic compositions, and ground-water migration pathways indicate that each ...
Water salinity and drought are the major abiotic stresses limiting turf grass growth. On the other hand, shortage of waterresources and salinity of water and soil in the arid and semi-arid zones such as Iran, are the restricting factors in developinglawn turf grasses. An experiment was conducted to evaluate the combined effects of water salinity and deficit irrigation ontall fescue (Festuca aru...
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