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春玉米灌溉水消耗及水分利用效率研究 被引量:2
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作者 丁林 金彦兆 +1 位作者 王以兵 李晶 《中国农村水利水电》 北大核心 2015年第8期24-27,38,共5页
通过微型蒸渗器和TDR土壤水分测定仪测定了不同地面节水灌溉技术条件下农田灌溉水消耗及水分利用效率,并结合气象数据比较不同灌水技术的优越性,测定了春玉米地土壤水分变化规律、玉米耗水规律、土面蒸发规律及水分利用效率,分析不同灌... 通过微型蒸渗器和TDR土壤水分测定仪测定了不同地面节水灌溉技术条件下农田灌溉水消耗及水分利用效率,并结合气象数据比较不同灌水技术的优越性,测定了春玉米地土壤水分变化规律、玉米耗水规律、土面蒸发规律及水分利用效率,分析不同灌溉方式对春玉米水分利用效率的影响。研究结果表明,在石羊河流域中下游,玉米采用现有地面节水灌溉技术能有效地减少作物生育期耗水量,而全膜覆盖还可减少作物生育期的土壤蒸发量,提高农田的水分利用效率,不同节水技术可减少玉米耗水量80mm以上,水分利用效率提高10.0%以上,在实际生产中可根据水源、基础设施、技术掌握难易程度、机械化程度等选择适宜春玉米的地面节水灌溉技术。 展开更多
关键词 灌溉水消耗 水分利用效率 地面灌溉方式 春玉米
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洋葱不同灌溉方式下灌溉水消耗转化规律
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作者 谢夏玲 丁林 《河南水利与南水北调》 2016年第6期29-31,共3页
文章通过微型蒸渗器和土壤水分烘干称重法测定了洋葱不同节水灌溉技术条件下灌溉水消耗及水分利用效率,并结合气象数据比较不同灌水技术的优越性,测定了洋葱地土壤水分变化规律、生育期耗水规律、土面蒸发规律及水分利用效率,分析不同... 文章通过微型蒸渗器和土壤水分烘干称重法测定了洋葱不同节水灌溉技术条件下灌溉水消耗及水分利用效率,并结合气象数据比较不同灌水技术的优越性,测定了洋葱地土壤水分变化规律、生育期耗水规律、土面蒸发规律及水分利用效率,分析不同灌溉方式对洋葱水分利用效率的影响。研究结果表明,在石羊河流域,洋葱采用节水灌溉技术能有效地减少作物生育期耗水量,不同节水技术可减少洋葱耗水量1 60 mm以上,其中棵间蒸发减少90 mm以上,水分利用效率提高20%以上,在实际生产中可根据水源、基础设施、技术掌握难易程度等选择适宜洋葱的节水灌溉技术。 展开更多
关键词 灌溉水消耗 水分利用效率 灌溉方式 洋葱
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Regional Land Use Patterns and Water Consumption in the Jordan Valley Using Geographic Information Systems
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作者 Nazeeh Almanasyeh Zeyad Makhamreh Brian Howard 《Journal of Agricultural Science and Technology(A)》 2012年第5期598-609,共12页
Trends in land use and water consumption are crucial components in understanding the changing nature of agricultural production and water use in- the Northern Jordan Valley. The objective of this study is to examine c... Trends in land use and water consumption are crucial components in understanding the changing nature of agricultural production and water use in- the Northern Jordan Valley. The objective of this study is to examine current agricultural land uses in the Jordan Valley and their water consumption patterns as well as to examine the changes in land use and water consumption that occurred between the years 2002 and 2010. Farm level cropping patterns and total annual water use were analysed in order to examine inter-basin land use and water consumption characteristics as well as to estimate the amount of water consumed by each respective crop in total and per unit of land devoted to its production. It was found that citrus production dominated both land and water usage in every basin of the Northern Jordan Valley and that between 2002 and 2010 there were shifts toward increasing citrus production in almost every basin surveyed. It was found that agricultural irrigation water usage decreased overall between 2002 and 2010 by approximately 15 percent and irrigated land usage in the Jordan Valley increased by 5 percent. The role of citrus farming is becoming more important in the Jordan Valley as Jordan's agricultural economy shifts away from subsistence farming for staple food crops like wheat and vegetables toward more financially lucrative crops grown for an increasingly international market. This trend is at least partly due to the increasing cost of agricultural irrigation water from Jordan's national canal system. 展开更多
关键词 Regional planning GIS Jordan Valley agricultural production water consumption.
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