Results 1 to 10 of about 3,132 (123)
Shuitu Baochi Xuebao, 2019 通过田间小区磁化水滴灌试验，研究了磁化水膜下滴灌对土壤水盐分布特征、棉花生长特性及产量的影响。结果表明：磁化水灌溉可以提高土壤含水量，促进棉花根系对水分的吸收，0-100 cm土层内磁化强度为3 000 Gs时的土壤含水量最大，保水效果最好。磁化水灌溉可以有效降低土壤盐分含量，加快土壤盐分的淋洗，0-100 cm土层内各磁化水处理土壤平均含盐量表现为3 000 Gs < 4 000 Gs < 1 000 Gs < 5 000 Gs < 0 Gs，磁化淡水处理的土壤脱盐率为2.7%~28.2%，3 000
彭遥 +6 more
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Characteristics of a Typical Tamarix Hohenackeri Shrub Resource Island in Qaidam Basin Under Prevailing Wind [PDF]
, 2022 [Objective] The characteristics of a typical Tamarix hohenackeri shrub resource island in Nuomuhong area of Qaidan Basin under the action of prevailing winds were studied in order to deeply understand the ecological significance of tamarisk shrubs in ...
Cao Guangchao +7 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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Protective Effect of Shelterbelt on Strip Fields in Southwest Margin of Taklimakan Desert [PDF]
, 2023 [Objectives] The windbreak efficiency of shelterbelts with different permeability on strip fields at the edge of the oasis in the Taklamakan Desert was analyzed in order to provide theoretical guidance for sustainable development of local grid strip ...
Cai Kaixu +3 more
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Spatial Distribution Characteristics of Soil Water and Salt in Newly Cultivated Farmland Under Gully Control in Loess Hilly Region [PDF]
, 2023 [Objective] Part of the newly cultivated farmland formed by the “Gully Control and Land Reclamation” project is facing the risk of soil salinization in the loess hilly region.
Jiao Feng +3 more
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Shuitu Baochi Xuebao, 2023 为明晰土壤盐渍化多维空间分布特征、水盐耦合关系,以环渤海平原的山东部分为研究区,通过野外实测和室内分析获取数据,基于经典统计方法对土壤水盐特征进行描述性统计分析;利用GIS软件分析土壤含盐量、含水量的二维空间分布,GMS软件可视化分析土壤盐渍化三维空间分异特征;构建土壤水盐耦合协调模型,定量分析不同因素对水盐耦合协调度的影响程度。结果表明:(1)研究区土壤含盐量中位数为2.08 g/kg,以中度盐渍土为主,土壤含盐量整体呈自上而下逐渐增大趋势,表层土壤含水量均值为15.38%,全区域较缺水;(2 ...
宋颖, 高明秀, 徐帻欣, 赵景辉
doaj
Zhejiang Daxue xuebao. Lixue ban, 2001 在塔里木盆地下第三系储层砂岩中，碳酸盐是分布最广的自生矿物之一.其形成从早成岩期延续到了晚成岩期.成分以方解石为主，白云石亦常见，二者均含数量不等的铁锰.分析结果显示，自生碳酸盐δ13C值分布范围在— 31‰〜+ 6‰，大部分样品介于—12‰〜 + 3‰之间.δ18O值变化范围在12.4‰〜28.5‰，样品在18‰〜24‰组区间相对集中.其碳氧同位素变化范围远远高于沉积碳酸盐，并且有不同的众数. 计算表明与自生碳酸盐平衡的水相氧同位素组成具双峰正态分布.δ18O值在—4‰〜—2‰和4‰〜6‰各有一个峰值，
YEYing(叶瑛) +4 more
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Shuitu Baochi Xuebao, 2023 为掌握科尔沁沙地南缘樟子松造林40多年对土壤水分、盐度的影响。以科尔沁沙地樟子松林地、草地2020年3月至2021年11月土壤、气象数据为基础,采用双累积曲线法(DCM)验证样地选取的合理性,利用空间代替时间法(STM)研究樟子松林地、草地土壤含水量、盐度的变化规律,以及与气象因子关系的差异。樟子松林地改变了土壤纵向剖面水分、盐度分布规律,二者均趋于正"S"形分布;林地有效提高土壤储水量 ...
郎明翰 +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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Shuitu Baochi Xuebao, 2000 在分析和总结国内外有关一维积水入渗条件下土壤水盐运移规律研究成果的基础上，针对盐碱土水盐运动的基本特征，通过室内一维土壤水盐运移过程的试验研究，分析了土壤盐分浓度分布规律，为盐碱地的开发利用提供了科学依据。
吕殿青 王文焰 等
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