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Soil Salinity Changes Under Cropping with Lycium barbarum *** Irrigation with Saline-Sodic Water

Pedosphere 2011年第4期21卷 539-548页

作者： DOU Chao-Yin kang yao-hu WAN Shu-Qin hu Wei Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 (China) Graduate University of Chinese Academy of Sciences Beijing 100049 (China)

In order to utilize the wasted saline-sodic soils under shallow groundwater condition, a 3-year field study was carried in a field cropped with Lycium barbarum L. and irrigated by drip irrigation with saline groundwater under the water table depth of 30-40 cm in the northern Yinchuan Plain, China. Effects of cropping duration （one, two, and three years） on soil salinity, soil solution composition, and pH in three adjacent plots were investigated in 2008. Results showed that a high irrigation frequency maintained high soil water potential and subsequently facilitated infiltration and downward movement of water and salt in the crop root zone. Salt accumulated on the edges of the ridges, and soil saturated-paste electrical conductivity （ECe） was higher in the edge. Concentrations of Na^＋, Ca^2＋, Mg^2＋, Cl^-, and SO24^- in the soil increased with the soil depth as did the ECe, while HCO3 and pH had a relative uniform distribution in soil profile. As planting year increased, the ECe and soil salts in the field had a decreasing tendency, while in the root zone they decreased immediately after irrigation and then remained relatively stable in the following growing seasons. HCO3 and pH had little change with the planting year. Results suggested that the application of drip irrigation with saline water could ameliorate saline-sodic soil and provide a relatively feasible soil environment for saline-sodic soils with shallow groundwater.

关键词： water table the growth of salt-tolerant plant Lycium barbarum L. under the salt accumulation saturated-paste electrical conductivity (ECe) shallow groundwater soil water potential depth

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Effect of different water application intensity and irrigation amount treatments of microirrigation on soil-leaching coastal saline soils of North China

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Journal of Integrative Agriculture 2016年第9期15卷 2123-2131页

作者： Chu Lin-lin kang yao-hu WAN Shu-qin Key Laboratory of Efficient Irrigation-Drainage and Agricultural Soil-Water Environment in Southern China Ministry of Education/College of Water Conservancy and Hydropower Engineering Hohai University Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Science and Natural Resources Research Chinese Academy of Sciences

In coastal regions, Bohai Gulf is one of the most affected areas by salinization. To study the effects of mocrosprinkler irrigation on the characteristics of highly saline sandy loam soil（ECe（saturated paste extract）=22.3 d S m^–1; SAR（sodium adsorption ratio）=49.0） of North China, a laboratory experiment was conducted. Five water application intensity（WAI） treatments（1.7, 3.1, 5.3, 8.8, and 10.1 mm h^–1）, five irrigation amount（IA） treatments（148, 168, 184, 201, and 223 mm） and three time periods of water redistribution（0, 24 and 48 h） were employed in the study. A compounding microsprinkler system was used for the WAI treatments, and a single microsprinkler was used for the IA treatments. The results indicated that, as soil depth increased, soil water content（θ） increased and then slightly decreased; with WAI and IA consistently increasing, the relatively moist region expanded and the average θ increased. Meanwhile, soil ECe increased as soil depth increased, and the zone with low soil salinity expanded as WAI and IA increased. Although the reduction of the average SAR was smaller than that of the average electrical conductivity of the ECe, these variables decreased in similar fashion as WAI and IA increased under microsprinkler irrigation. The average p H decreased as soil depth increased. Longer time periods of water redistribution led to lower salinity and slight expansion of the SAR zone. Considering the effects of leached salts in coastal saline soils, greater WAI and IA values are more advantageous under unsaturated flow conditions, as they cause better water movement in the soil. After leaching due to microsprinkler irrigation, highly saline soil gradually changes to moderately saline soil. The results provide theoretical and technological guidance for the salt leaching and landscaping of highly saline coastal environments.

关键词： coastal saline soil microsprinkler irrigation SAR reclamation

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Effects of water application intensity of microsprinkler irrigation on water and salt environment and crop growth in coastal saline soils

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Journal of Integrative Agriculture 2015年第10期14卷 2077-2089页

作者： Chu Lin-lin kang yao-hu WAN Shu-qin National Research Center of Pumps Jiangsu University Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Science and Natural Resources Research Chinese Academy of Sciences

Laboratory and field experiments were conducted to investigate the effects of water application intensity（WAI） on soil salinity management and the growth of Festuca arundinacea（festuca） under three stages of water and salt management strategies using microsprinkler irrigation in Hebei Province, North China. The soil water content（è） and salinity of homogeneous coastal saline soils were evaluated under different water application intensities in the laboratory experiment. The results indicated that the WAI of microsprinkler irrigation influenced the è, electrical conductivity（ECe） and p H of saline soils. As the WAI increased, the average values of è and ECe in the 0–40 cm profile also increased, while their average values in the 40–60 cm profile decreased. The p H value also slightly decreased as depth increased, but no significant differences were observed between the different treatments. The time periods of the water redistribution treatments had no obvious effects. Based on the results for è, ECe and p H, a smaller WAI was more desirable. The field experiment was conducted after being considered the results of the technical parameter experiment and evaporation, wind and leaching duration. The field experiment included three stages of water and salt regulation, based on three soil matric potentials（SMP）, in which the SMP at a 20-cm depth below the surface was used to trigger irrigation. The results showed that the microsprinkler irrigation created an appropriate environment for festuca growth through the three stages of water and salt regulation. The low-salinity conditions that occurred at 0–10 cm depth during the first stage（-5 k Pa） continued to expand through the next two stages. The average p H value was less than 8.5. The tiller number of festuca increased as SMP decreased from the first stage to the third stage. After the three stages of water and salt regulation, the highly saline soil gradually changed to a low-saline soil. Overall, based on the salt desa

关键词： coastal saline soil microsprinkler irrigation water application intensity soil salinity water and salt regulation reclamation

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Effects of different irrigation methods on micro-environments and root distribution in winter wheat fields

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Journal of Integrative Agriculture 2015年第8期14卷 1658-1672页

作者： Lü Guo-hua SONG Ji-qing BAI Wen-bo WU Yong-feng LIU Yuan kang yao-hu State Key Engineering Laboratory of Crops Efficient Water Use and Drought Mitigation Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences

The irrigation method used in winter wheat fields affects micro-environment factors, such as relative humidity（RH） within canopy, soil temperature, topsoil bulk density, soil matric potential, and soil nutrients, and these changes may affect plant root *** experiment was carried out to explore the effects of irrigation method on micro-environments and root distribution in a winter wheat field in the 2007–2008 and 2008–2009 growing *** results showed that border irrigation（BI）, sprinkler irrigation（SI）, and surface drip irrigation（SDI） had no significant effects on soil *** bulk density, RH within the canopy, soil available N distribution, and soil matric potential were significantly affected by the three *** change in soil matric potential was the key reason for the altered root profile distribution ***, more fine roots were produced in the BI treatment when soil water content was low and topsoil bulk density was *** growth was most stimulated in the top soil layers and inhibited in the deep layers in the SDI treatment, followed by SI and BI, which was due to the different water application *** a result, the root profile distribution differed, depending on the irrigation method *** root distribution pattern changes could be described by the power level variation in the exponential function.A good knowledge of root distribution patterns is important when attempting to model water and nutrient movements and when studying soil-plant interactions.

关键词： border irrigation root profile distribution sprinkler irrigation surface drip irrigation field micro-environment winter wheat

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Photo‑Energized MoS_(2)/CNT Cathode for High‑Performance Li–CO_(2)Batteries in a Wide‑Temperature Range

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Nano-Micro Letters 2025年第1期17卷 160-175页

作者： Tingsong hu Wenyi Lian kang hu Qiuju Li Xueliang Cui Tengyu yao Laifa Shen Jiangsu Key Laboratory of Materials and Technologies for Energy Storage College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Li–CO_(2) batteries are considered promising energy storage systems in extreme environments such as Mars;however,severe performance degradation will occur at a subzero temperature owning to the sluggish reaction ***,a photo-energized strategy adopting sustainable solar energy in wide working temperature range Li–CO_(2) battery was achieved with a binder-free MoS_(2)/carbon nanotube(CNT)photo-electrode as *** unique layered structure and excellent photoelectric properties of MoS_(2) facilitate the abundant generation and rapid transfer of photo-excited carriers,which accelerate the CO_(2) reduction and Li_(2)CO_(3) decomposition upon *** illuminated battery at room temperature exhibited high discharge voltage of 2.95 V and mitigated charge voltage of 3.27 V,attaining superior energy efficiency of 90.2%and excellent cycling stability of over 120 *** at an extremely low temperature of−30℃,the battery with same electrolyte can still deliver a small polarization of 0.45 V by the photoelectric and photothermal synergistic mechanism of MoS_(2)/CNT *** work demonstrates the promising potential of the photo-energized wide working temperature range Li–CO_(2) battery in addressing the obstacle of charge overpotential and energy efficiency.

关键词： Li-CO_(2)batteries Photo-energized Wide operation-temperature Kinetics MoS_(2)

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Effect of Sprinkler and Border Irrigation on Topsoil Structure in Winter Wheat Field

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Pedosphere 2010年第4期20卷 419-426页

作者： SUN Ze-Qiang kang yao-hu JIANG Shu-Fang Soil and Fertilizer Institute Shandong Academy of Agricultural Sciences Jinan 250100 (China) Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 (China)

A two-year experiment was carried out on the effect of sprinkler irrigation on the topsoil structure in a winter wheat field. A border-irrigated field was used as the control group. The total soil porosity, pore size distribution, pore shape distribution, soil cracks and soil compaction were measured. The sprinkler irrigation brought significant changes to the total soil porosity, capillary porosity, air-filled porosity and pore shape of topsoil layers in comparison with the border irrigation. The total porosity and air-filled porosity of the topsoil in the sprinkler irrigation were higher than those in the border irrigation. The changes in the air-filled and elongated pores were the main reasons for the changes in total porosity. The porosities of round and irregular pores in topsoil under sprinkler irrigation were lower than those under border irrigation. Sprinkler irrigation produced smaller soil cracks than border irrigation did, so sprinkler irrigation may restrain the development of macropore flow in comparison with border irrigation. The topsoil was looser under sprinkler irrigation than under border irrigation. According to the conditions of topsoil structure, it is preferable for crops to grow under sprinkler irrigation than under border irrigation.

关键词： macropore flow soil compaction soil crack soil pore shape soil porosity

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Boosting Oxygen Evolution Reaction Performance on NiFe‑Based Catalysts Through d‑Orbital Hybridization

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Nano-Micro Letters 2025年第1期17卷 281-292页

作者： Xing Wang Wei Pi Sheng hu Haifeng Bao Na yao Wei Luo State Key Laboratory of New Textile Materials and Advanced Processing Technology Key Laboratory of New Textile Materials and Applications of Hubei ProvinceSchool of Materials Science and EngineeringWuhan Textile UniversityWuhan 430200People’s Republic of China College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072People’s Republic of China

Anion-exchange membrane water electrolyzers(AEMWEs)for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based *** introducing a third metal into NiFe-based catalysts to construct asymmetrical M-NiFe units,the d-orbital and electronic structures can be adjusted,which is an important strategy to achieve sufficient oxygen evolution reaction(OER)performance in ***,the ternary NiFeM(M:La,Mo)catalysts featured with distinct M-NiFe units and varying d-orbitals are reported in this *** and theoretical calculation results reveal that the doping of La leads to optimized hybridization between d orbital in NiFeM and 2p in oxygen,resulting in enhanced adsorption strength of oxygen intermediates,and reduced rate-determining step energy barrier,which is responsible for the enhanced OER *** critically,the obtained NiFeLa catalyst only requires 1.58 V to reach 1 A cm^(−2) in an anion exchange membrane electrolyzer and demonstrates excellent long-term stability of up to 600 h.

关键词： NiFe-based catalysts d-orbital coupling Oxygen evolution reaction Anion exchange membrane electrolyzer

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Potential role of tanycyte-derived neurogenesis in Alzheimer's disease

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Neural Regeneration Research 2025年第6期20卷 1599-1612页

作者： Guibo Qi Han Tang Jianian hu Siying kang Song Qin Department of Anatomy Histologyand EmbryologySchool of Basic Medical SciencesFudan UniversityShanghaiChina State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science Fudan UniversityShanghaiChina

Tanycytes, specialized ependymal cells located in the hypothalamus, play a crucial role in the generation of new neurons that contribute to the neural circuits responsible for regulating the systemic energy balance. The precise coordination of the gene networks controlling neurogenesis in naive and mature tanycytes is essential for maintaining homeostasis in adulthood. However, our understanding of the molecular mechanisms and signaling pathways that govern the proliferation and differentiation of tanycytes into neurons remains limited. This article aims to review the recent advancements in research into the mechanisms and functions of tanycyte-derived neurogenesis. Studies employing lineage-tracing techniques have revealed that the neurogenesis specifically originating from tanycytes in the hypothalamus has a compensatory role in neuronal loss and helps maintain energy homeostasis during metabolic diseases. Intriguingly,metabolic disorders are considered early biomarkers of Alzheimer's disease. Furthermore,the neurogenic potential of tanycytes and the state of newborn neurons derived from tanycytes heavily depend on the maintenance of mild microenvironments, which may be disrupted in Alzheimer's disease due to the impaired blood–brain barrier ***, the specific alterations and regulatory mechanisms governing tanycyte-derived neurogenesis in Alzheimer's disease remain unclear. Accumulating evidence suggests that tanycyte-derived neurogenesis might be impaired in Alzheimer's disease, exacerbating neurodegeneration. Confirming this hypothesis, however, poses a challenge because of the lack of long-term tracing and nucleus-specific analyses of newborn neurons in the hypothalamus of patients with Alzheimer's disease. Further research into the molecular mechanisms underlying tanycyte-derived neurogenesis holds promise for identifying small molecules capable of restoring tanycyte proliferation in neurodegenerative diseases. This line of investigation could pro

关键词： Alzheimer's disease blood–brain barrier ependymoglial cells hypothalamus metabolic diseases neural stem cells neurogenesis neuroinflammatory diseases neurons tanycyte

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番茄滴灌在日光温室内耗水规律的初步研究

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节水灌溉 2000年第3期 25-27页

作者：原保忠康跃虎兰州大学干旱农业生态国家重点实验室兰州730000 中国科学院地理所中国科学院禹城综合试验站北京100101

:对山东禹城地区采用滴灌灌溉的番茄 ,在日光温室内 1-4月份生长的耗水规律及空气温度、空气湿度和地温等环境因素进行了初步的研究。结果表明 ,在严冬季节不用加温条件下 ,日光温室内的平均温度可维持在18℃左右 ,内外温差达 2 0℃左... 详细信息

:对山东禹城地区采用滴灌灌溉的番茄 ,在日光温室内 1-4月份生长的耗水规律及空气温度、空气湿度和地温等环境因素进行了初步的研究。结果表明 ,在严冬季节不用加温条件下 ,日光温室内的平均温度可维持在18℃左右 ,内外温差达 2 0℃左右 ,可基本满足番茄生长发育的需求。将滴灌带下 15cm处的土壤水势维持在番茄生长的适宜范围 (≥ -2 0kPa) ,日光温室内的水面蒸发量与作物的需水量和灌溉水量存在很好的一致关系 ,因此。

关键词：日光温室滴灌番茄耗水规律水面蒸发量灌溉计划

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亏缺灌溉对大棚甜瓜果实发育及品质影响

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生态学杂志 2014年第8期33卷 2053-2059页

作者：原保忠千晶晶别之龙康跃虎华中农业大学植物科学技术学院武汉430070 华中农业大学园艺林学学院武汉430070 中国科学院地理科学与资源研究所北京100101

以甜瓜伊丽莎白品种为试验材料，在大棚甜瓜生殖生长期设置5个不同梯度的灌水量，甜瓜坐果后开始不同灌水处理，分别为T85（85％ θfc，θfc表示田间持水量）、T75（75％θfc）、T65（65％θfc）、T，5（55％θfc）、T45（45％θfc），... 详细信息

以甜瓜伊丽莎白品种为试验材料，在大棚甜瓜生殖生长期设置5个不同梯度的灌水量，甜瓜坐果后开始不同灌水处理，分别为T85（85％ θfc，θfc表示田间持水量）、T75（75％θfc）、T65（65％θfc）、T，5（55％θfc）、T45（45％θfc），研究不同亏缺灌溉程度下果实生长发育状况及对果实品质影响。结果表明：果实发育分3个阶段，分别为授粉后的7～10d（果径增长速率3—5mm·d-1）、10～19d（1～2mm·d-1）和19～35d（〈1mm·d-1）；果实增长速率随着补充灌水的进行而呈波动趋势，不同灌溉条件下补充灌水后产生不同程度的复水补偿效应，一定程度上弥补了水分胁迫对产量造成的影响；随着灌水量的减少，各处理与T85相比产量分别降低了0．60％、3．59％、10．18％和16．17％，单果重T75与T85无差异，其他各处理则与T85差异显著；随着亏缺灌溉程度的加深，果实横、纵径减小，果皮变薄，果形指数随之降低；可溶性固形物含量、边糖、心糖先升高后降低的趋势，以T75最高；可溶性糖、可溶性蛋白以T75含量最高，各处理差异不显著；Vc及游离氨基酸含量以T65最高，并与其他各处理差异显著；糖、酸含量以T75最高，T65、T55、T45均与之差异显著。在武汉地区可以T75为甜瓜生殖生长期的灌水指标，指导大棚甜瓜的水分管理。

关键词：果实发育大棚甜瓜亏缺灌溉品质影响游离氨基酸含量可溶性固形物含量生殖生长期可溶性糖

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