期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Irrigation of Romaine Lettuce (Lactuca sativa)Using Wastewater Treated byNon-Conventional Technologies
1
作者 Manuel Enrique Lopez Sepulveda Santiago Gutierrez Ruiz +1 位作者 Antonio Lineiro Bullon Jose Maria Quiroga Alonso 《World Journal of Engineering and Technology》 2017年第5期1-11,共11页
The aim of this study was to assess the capacity for reuse of wastewater treated in stabilisation ponds and subsequently reclaimed by means of different filtration systems at pilot scale. An analysis of filtered water... The aim of this study was to assess the capacity for reuse of wastewater treated in stabilisation ponds and subsequently reclaimed by means of different filtration systems at pilot scale. An analysis of filtered water showed turbidity values of below 5 NTU, a total suspended solids (TSS) content of 7 mg/l, and Escherichia coli values of up to 1.6 log CFU/100 ml. These results fall within the parameters stipulated in RD 1620/2007 Spanish Water Reuse Regulations governing the reuse of reclaimed wastewater for agricultural purposes. The water reclaimed by means of filtration systems was used to irrigate Romainelettuce (Lactuca sativa longifolia), comparing growth with that of the same variety irrigated with water from the supply network. The results showed a mean difference in lettuce growth of up to 300% in favour of the crop irrigated with reclaimed water. 展开更多
关键词 Reclamation Reutilisation Small Communities intermittent Sand Filters Infiltration-Percolation Stabilisation Ponds Artificial Wetlands
下载PDF
Effect of water regimes and organic matters on transport of arsenic in summer rice (Oryza sativa L.) 被引量:3
2
作者 Sefaur Rahaman Ashim Chandra Sinha Dibyendu Mukhopadhyay 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2011年第4期633-639,共7页
The arsenic contamination in soil-water-plant systems is a major concern of where, the groundwater is being contaminated with arsenic (above 0.01 mg/L) in the Indian subcontinent. The study was conducted with organi... The arsenic contamination in soil-water-plant systems is a major concern of where, the groundwater is being contaminated with arsenic (above 0.01 mg/L) in the Indian subcontinent. The study was conducted with organic matter to find out the reducing effect on arsenic load to rice (cv. Khitish). It was observed that intermittent ponding reduced arsenic uptake (23.33% in root, 13.84% in shoot and 19.84% in leaf) at panicle initiation stage, instead of continuous ponding. A decreasing trend of arsenic accumulation (root straw husk whole grain milled grain) was observed in different plant parts at harvest. Combined applications of lathyrus + vermicompost + poultry manure reduced arsenic transport in plant parts (root, straw, husk, whole grains and milled grain) which was significantly at par (p 0.05) with chopped rice straw (5 tons/ha ) + lathyrus green manuring (5 tons/ha) in comparison to control and corresponding soils. A significant negative correlation of arsenic with phosphorus (grain P with arsenic in different parts R 2 = 0.627–0.726 at p 0.01) was observed. Similarly, soil arsenic had a negative correlation with soil available phosphorus (R 2 = 0.822 at p 0.001) followed by soil nitrogen (R 2 = 0.762 at p 0.01) and soil potassium (R 2 = 0.626 at p 0.01). Hence, effective management of contaminated irrigation water along with organic matter could reduce the arsenic build up to plants and soil. 展开更多
关键词 ARSENIC intermittent ponding LATHYRUS organic nutrients poultry manure saturation and vermicompost
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部