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保护地渗灌管的埋深对土壤水盐动态及番茄生长的影响 被引量:30
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作者 王淑红 张玉龙 +1 位作者 虞娜 颜文 《中国农业科学》 CAS CSCD 北大核心 2003年第12期1508-1514,共7页
研究了保护地渗灌管不同深度对土壤水盐动态、番茄生长发育及产量的影响。结果表明 ,渗灌管的埋深越浅 ,灌水周期越短 ,盐分积累越多 ;渗灌管埋深 3 0cm、管下铺设防渗槽时 ,有利于抑制盐分积累 ,番茄生长旺盛 ,株高、茎粗、果径等指标... 研究了保护地渗灌管不同深度对土壤水盐动态、番茄生长发育及产量的影响。结果表明 ,渗灌管的埋深越浅 ,灌水周期越短 ,盐分积累越多 ;渗灌管埋深 3 0cm、管下铺设防渗槽时 ,有利于抑制盐分积累 ,番茄生长旺盛 ,株高、茎粗、果径等指标表现最佳 。 展开更多
关键词 保护地渗灌管 埋深方法 土壤水分 土壤盐分 动态分析 番茄 生长发育 影响因素
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Soil Characteristics in Selected Landfill Sites in the Babylon Governorate, Iraq
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《Journal of Civil Engineering and Architecture》 2017年第4期348-363,共16页
The Babylon Governorate is situated in the middle of Iraq. It covers an area of 5,315 km2 and has 2,092,998 inhabitants distributed throughout its five major cities (Qadhaa). Presently, there is no landfill site in ... The Babylon Governorate is situated in the middle of Iraq. It covers an area of 5,315 km2 and has 2,092,998 inhabitants distributed throughout its five major cities (Qadhaa). Presently, there is no landfill site in the governorate that meets the environmental criteria for the disposal of municipal and industrial waste. Consequently, GIS (geographic information system) and methods of multi-criteria decision making were used here to select the best sites in each city in the Babylon Governorate that would fulfil the environmental requirements. Two sites were chosen in each city. As the groundwater is very shallow in this area, the design should ensure against groundwater pollution by leachate from these sites. To avoid this problem, soil investigation was conducted at these sites so that the most suitable landfill design could be accomplished. The results of soil investigation in these sites include the soil profile, groundwater depth, chemical properties, allowable bearing capacity, Atterberg limits test results and material characteristics of the soil strata. From the research, it is believed that the best design is one that puts the landfill above ground. 展开更多
关键词 Bearing capacity Atterberg limit LANDFILL BABYLON Iraq.
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