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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：温室咸土地地下排水管空间和深度的优化研究：中国南部3年的田间实验

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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脱盐和高作物产量的大比率。为了了解中国温室咸土壤中番茄栽培地下排水管的最佳空间和深度，设计了不同埋地方法的排水处理，番茄质量，产量，灌溉用水效率（IWUE）和表面在2010年至2012年的增长季节期间观察到治疗中的土壤电导率，并且使用原理分析模型和投影追踪模型来选择具有最佳综合效果的处理。结果表明：（1）在增长季节期间，番茄产量增加14.21％至50.29％; （2）表面土壤EC显着下降，虽然在实验过程中，一些治疗的表面土壤EC显示出暂时的崛起; （3）在相同的埋深度下，地下排水管的更接近的排列似乎对产量获得和脱盐的产量更有效; （4）T7被证明是根据投影追踪模型的计算的最佳处理，其综合效果是最好的，主要体现在提高番茄质量，增加产量和IWUE和降低表土的盐度。在该研究中，选择0.8米的深度与4M空间组合为南方温室咸土壤番茄栽培地下排水管的优化布局。

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