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首页> 外文期刊>Advance journal of food science and technology >Optimization Study on the Space and Depth of Subsurface Drainage Tubes for Greenhouse Salty Soils: A 3-Year Field Experiment in South of China
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Optimization Study on the Space and Depth of Subsurface Drainage Tubes for Greenhouse Salty Soils: A 3-Year Field Experiment in South of China

机译：温室咸土地下排水管空间和深度的优化研究：中国南方3年田间试验

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摘要

A well-designed subsurface drainage system with reasonable drain space and depth contributes to large ratio of desalination and high crop yield. In order to find out the optimal space and depth of subsurface drainage tubes for tomato cultivation in greenhouse salty soils in south of China, drainage treatments with different buried methods were designed, the tomato quality, yield, Irrigation Water Use Efficiency (IWUE) and surface soil electricity conductivity in the treatments were observed during 2010 to 2012 growth seasons and the principle component analysis model and projection pursuit model were used to select the treatment with best comprehensive effects. Results showed that: (1) The tomato yield was increased by 14.21 to 50.29% during the growth seasons; (2) Surface soil EC decreased significantly, although in the process of experiments, surface soil EC of some treatments showed a temporary rise; (3) Under the same buried depth, the closer arrangement of subsurface drainage tubes appeared to be more effective for the yield gaining and topsoil desalination; (4) T7 was proved to be the optimal treatment according to the calculations of projection pursuit model, the comprehensive effects of which were the best, mainly embodying in improving the tomato quality, increasing the yield and IWUE and reducing salinity in topsoil. In this study, 0.8m depth combining with 4m space was selected as the optimized layout of subsurface drainage tubes for the tomato cultivation in greenhouse salty soils of south China.
机译：精心设计的地下排水系统具有合理的排水空间和深度，有助于提高海水淡化率，提高作物产量。为了找出南方温室大棚土壤中番茄栽培地下排水管的最佳空间和深度，设计了不同埋地方式的排水处理方法，研究了番茄的品质，产量，灌溉用水效率（IWUE）和地表水。在2010年至2012年的生长季节观察处理的土壤电导率，并使用主成分分析模型和投影追踪模型选择综合效果最佳的处理。结果表明：（1）番茄生育期番茄产量提高了14.21％，达到50.29％。 （2）表层土壤EC明显降低，尽管在实验过程中，某些处理的表层土壤EC呈暂时上升趋势； （3）在相同的埋深下，地下排水管的更紧密布置似乎对增产和表土淡化更有效； （4）根据投影寻踪模型的计算，证明T7是最佳处理方法，综合效果最好，主要表现在提高番茄品质，提高产量和IWUE，降低表土盐分上。在本研究中，选择深度为0.8m且空间为4m的组合作为地下排水管的最佳布局，以用于华南温室盐渍土壤中的番茄栽培。

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  • 来源
    《Advance journal of food science and technology》 |2015年第11期|899-904|共6页
  • 作者

    Yarning Zhai; Yujie Jin; Lihua Chen;

  • 作者单位

    Key Laboratory of Efficient Irrigation-Drainage and Agricultural Soil-Water Environment in Southern China (Hohai University), Ministry of Education,College of Water Conservancy and Hydropower Engineering, Hohai University;

    Nanjing Water Planning and Designing Institute Co. Ltd., Nanjing 210098, China;

    Key Laboratory of Efficient Irrigation-Drainage and Agricultural Soil-Water Environment in Southern China (Hohai University), Ministry of Education,College of Water Conservancy and Hydropower Engineering, Hohai University;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Projection pursuit; salty; subsurface drainage; tomato;

    机译：投影追求;咸;地下排水;番茄;

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