Results 11 to 20 of about 35 (30)
Soil Salinization Characteristics of Different Land Use Types in a Typical Oasis Irrigation Area of Lower Tarim River [PDF]
, 2023 [Objective] The soil salinization characteristics under different land use types in extremely arid regions were analyzed in order to provide support for the sustainable efficient utilization of regional land resources.
Baiyun Gang +6 more
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Effects of Water Supply Location in Anegative Pressure Irrigation System on Tomato Growth and Water Use Efficiency [PDF]
, 2023 [Objective] The specific effects of negative head irrigation system on tomato growth, irrigation method, and water utilization efficiency were studied in order to provide scientific references for improving the technical system of negative head ...
Feng Feng +6 more
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Effects of Winter Irrigation on Soil Water-heat-salt Migration and Crop Growth During Freezing-Thawing Period in Qingtongxia Irrigation District of Ningxia [PDF]
, 2023 [Objective] The effects of winter irrigation on soil water-heat-salt migration and crop growth during the freezing-thawing period were analyzed in order to provide a scientific basis for controlling soil salinization, and to ensure food security ...
Han Yuping +4 more
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Effects of Brackish Water with Different Sodium-Potassium Ratios on Soil Water-Salt Characteristics and Winter Wheat Growth [PDF]
[Objective] To study the effects of brackish water irrigation on soil water and salt characteristics and crop growth is helpful to guide the safe utilization of brackish water.
CHENG Yu +7 more
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Progress in developments and applications of the HYDRUS model and associated coupling model packages [PDF]
HYDRUS model is widely used in agricultural irrigation and pollution transport because it can comprehensively consider the movement of water, heat, and pollutants in the soil-plant-atmosphere system.
Bei ZHANG +5 more
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, 2021 滨海盐碱地作为我国重要的后备土地资源，具有较大的利用潜力和经济价值。滨海盐碱地存在地下水位浅且矿化度高、土壤盐含量高、土质粘重肥力低和淡水资源匮乏等问题。淡水资源短缺和土壤盐渍化是限制滨海盐碱地农业可持续发展的重要因素。微咸水灌溉对缓解淡水资源短缺、盐碱地改良及利用方面具有重要意义。基于以上研究背景，本文以金银花为研究作物，通过设置0 mm（T1）、40 mm（T2）、80 mm（T3）和120 mm（T4）共4个处理的微咸水灌溉野外控制试验及中度和重度等渗盐（150和300 mM）胁迫和干旱（19.3%
贺文君
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Shuitu Baochi Xuebao, 2017 水资源短缺成为制约黄河三角洲地区社会经济发展的主要瓶颈和突出问题，合理开发利用该区的地下微咸水资源，利用微咸水进行农田灌溉已成为缓解该区域水资源短缺的重要策略之一。以黄河三角洲盐渍化典型地区为例，通过野外田间灌溉试验探讨了微咸水对土壤水盐分布特征及冬小麦生长、产量、光合作用特性的影响，并提出了土壤水盐调控措施。结果表明：（1）冬小麦生长期微咸水灌溉（淡水-微咸水-微咸水组合灌溉）增加了试验田土壤的含盐量，特别是表层0—20 cm增加量达0.9 g/kg ...
王海霞 +4 more
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Shuitu Baochi Xuebao, 2016 以黄河三角洲重度盐碱化土壤为研究土样，在室内对其进行垂直一维积水入渗试验，研究了5种咸淡水分配比例下累积入渗量、湿润锋深度和入渗率随时间的变化规律及灌溉后土壤脱盐深度、脱盐率。结果表明：（1）首轮微咸水入渗结束，进行第二轮淡水灌溉后，在同一时间，与全部微咸水灌溉相比，累积入渗量、湿润峰深度和入渗率均产生了明显的下降，并且淡水灌水量越多，下降的幅度越大，但其仍显著大于全部淡水灌溉；（2）累积入渗量与湿润锋深度呈良好的线性关系，回归方程的决定系数R2均大于0.99；与Green ...
王乃江, 赵连东
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Shuitu Baochi Xuebao, 2007 采用大型蒸渗仪研究不同地下水埋深条件下微咸水(咸水)灌溉对土壤水盐的影响,在此基础上,建立了BP神经网络水盐耦合模型。研究结果表明:土壤中盐分含量随地下水埋深的增加而减小,随灌溉水盐分水平的增加而增大。在地下水埋深为2 m,3 m,4 m的地区,采用矿化度小于4 g/L的水进行灌溉,在夏玉米整个生长周期的0~100 cm土层内不会形成积盐现象;拓扑结构为8∶2∶2的BP网络模型,能模拟不同地下水埋深条件下微咸水(咸水)灌溉的水盐运移,且精度较高。
乔冬梅 +5 more
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Shuitu Baochi Xuebao, 2003 通过对中国东北松嫩平原西部自然环境调查和分析,结合当地作物不同生长阶段的需水量及水分亏缺,在试验区选择对照区和不同淋洗定额灌溉区进行淋洗试验,结果表明:相对于承压地下水和雨水,松嫩平原西部丰富的潜层微咸水对苏打盐渍土有更高的入渗速率,达到19.4mm/h;微咸水淋洗使土壤中的盐分下移,在耕层土壤(0～0.6m),随着淋洗定额的增加,ECe和SARe明显降低,作物的产量相对于对照亦有明显提高。
李取生 李晓军 刘长江 吴乐知
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