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| 1 | 线聚焦型太阳能二氧化碳发生器性能研究显示文摘研究了一种线聚焦型太阳能二氧化碳发生器。分别在跟踪及非跟踪工况下,在呼和浩特地区测试并分析了系统的集热与产气性能。确定了系统的最佳运行方式,提出了气损率和产气能力2个系统性能评价指标。测试结果表明,跟踪较非跟踪工况,反应器内腔空晒最高温度、闷晒最高水温、最高集热效率分别提升16.30%、12.44%、94.50%;系统最佳运行工况确定为跟踪式。在产气原料分解温度范围内,系统集热效率为31.80%;测试阶段系统气损率为4.50%;当太阳直接辐照度在650~850W/m~2范围内变化时,系统产气能力随太阳直接辐照度呈正相关变化。基于系统产气能力的变化规律,可计算不同规模线聚焦型太阳能二氧化碳发生器的具体结构参数。 | 吴明清 李传峰 罗华平 弋晓康 SHAKEEL Ahmed Soomro 陈坤杰 胡云峰 魏增宇 李飞 陈君然 杜威 刘彩玲 魏丹 宋建农 黎艳妮 都鑫 张福印 赵倩 王利春 郭文忠 陈晓丽 聂铭君 贾冬冬 王利军 郭燕 贺佳 王利民 张喜旺 刘婷 赵引 毛晓敏 薄丽媛 谢斌 武仲斌 毛恩荣 郭枭 张远巍 冯志诚 王飞 田瑞 侯贤清 李荣 吴鹏年 李培富 王西娜 | 2018 | 农业机械学报2018，49，8： | 108 |
| 2 | 秸秆覆盖对套作玉米苗期根系发育与生理特征的影响显示文摘在西南地区'小麦/玉米/甘薯'三熟制套作模式下,以当地传统耕作为对照(T),秸秆覆盖(TS)、秸秆覆盖+腐熟剂(TSD)作为两种处理,连续两年田间试验研究了不同秸秆覆盖处理对育苗移栽玉米苗期的根系形态与生理特征的影响以及作用机理。研究结果表明:秸秆覆盖处理与对照相比增加了玉米苗期的根长、根表面积,显著增加了直径1.0~2.5mm范围内的根长,且秸秆覆盖+腐熟剂处理与秸秆覆盖处理间差异不大。2008年,与对照处理相比,秸秆覆盖、秸秆覆盖+腐熟剂处理苗期玉米根系活力分别提高19.12%、27.46%,根冠比分别提高36.72%、37.50%,根系生物量分别提高62.53%、69.42%;2009年,上述指标与对照处理相比分别提高17.86%、25.83%,31.54%、33.08%,65.69%、77.37%。同时秸秆覆盖处理有利于改善土壤水分与养分供应状况。可见,秸秆覆盖保护性耕作措施可通过改变农田环境促进套作玉米苗期根系发育,配合腐熟剂效果更佳。 | 邹聪明 王国鑫 胡小东 张云兰 薛兰兰 Shakeel Ahmad Anjum 王龙昌 | 2010 | 中国生态农业学报2010，18，3： | 32 |
| 3 | Antibiotic resistance and cagA gene correlation:A looming crisis of Helicobacter pylori显示文摘AIM:To determine antibiotic resistance of Helicobacter pylori(H.pylori) in Pakistan and its correlation with host and pathogen associated factors.METHODS:A total of 178 strains of H.pylori were isolated from gastric biopsies of dyspeptic patients.Susceptibility patterns against first and second-line antibiotics were determined and trends of resistance were analyzed in relation to the sampling period,gastric conditions and cagA gene carriage.The effect of cagA gene on the acquisition of resistance was investigated by mutant selection assay.RESULTS:The observations showed that monoresistant strains were prevalent with rates of 89% for metronidazole,36% for clarithromycin,37% for amoxicillin,18.5% for ofloxacin and 12% for tetracycline.Furthermore,clarithromycin resistance was on the rise from 2005 to 2008(32% vs 38%,P = 0.004) and it is significantly observed in non ulcerative dyspeptic patients compared to gastritis,gastric ulcer and duodenal ulcer cases(53% vs 20%,18% and 19%,P = 0.000).On the contrary,metronidazole and ofloxacin resistance were more common in gastritis and gastric ulcer cases.Distribution analysis and frequencies of resistant mutants in vitro correlated with the absence of cagA gene with metronidazole and ofloxacin resistance.CONCLUSION:The study confirms the alarming levels of antibiotic resistance associated with the degree of gastric inflammation and cagA gene carriage in H.pylori strains. | Adnan Khan Amber Farooqui Hamid Manzoor Syed Shakeel Akhtar Muhammad Saeed Quraishy Shahana Urooj Kazmi | 2012 | World Journal of Gastroenterology2012，18，18： | 15 |
| 4 | 纳米氮化铝改性对芳纶1313绝缘纸介电特性的影响显示文摘聚合物纳米复合材料因其优良的介电性能在电介质绝缘领域得到了广泛的应用。为获得性能优良的绝缘纸,将纳米氮化铝(AlN)添加到芳纶1313中。将改性后的绝缘纸进行浸油处理,研究了AlN对油浸芳纶1313介电性能的影响。结果表明:纳米Al N能有效降低绝缘纸的电导电流,以及提升其交流击穿电场强度;同时Al N能够抑制空间电荷向介质内的注入、迁移和积聚,使绝缘纸内空间电荷分布更加均匀。另外聚合物纳米材料的界面特性使得改性后绝缘纸的相对介电常数和介电损耗值有所升高,介损松弛峰值也向低频段移动。芳纶1313/Al N油浸绝缘纸介电性能的变化归因于纳米粒子与聚合物之间的界面效应使界面区域陷阱浓度和深度增大,限制了电荷的运动。 | 柏舸 廖瑞金 刘娜 柳海滨 杨丽君 Shakeel Akram | 2015 | 高电压技术2015，41，2： | 15 |
| 5 | 降雨特征对多雨城市海绵改造小区径流控制效果的影响显示文摘为科学定量评价不同降雨特征对多雨城市海绵改造小区径流控制效果的影响,该文基于在线监测和模型模拟相结合的方法,以某多雨地区海绵城市试点区内一个典型小区为研究对象,布置代表性的监测点对其排口流量和悬浮物(suspended solid,SS)进行连续在线监测。在此基础上构建暴雨洪水管理模型(storm water management model,SWMM),开展海绵小区改造对径流水量控制和水质净化效果评价的实证研究。利用实测在线降雨水量水质数据对模型关键参数进行率定和验证,Nash-Sutcliffe效率系数均大于0.71。在实际场次降雨和典型年降雨情景下,模拟分析了海绵改造对雨水径流水量控制和水质净化的效果。结果表明,海绵改造后,小区范围内的年径流总量控制率为52.9%,年径流削减率为28.0%,污染物负荷削减率为66.3%。整体而言,共计81场降雨事件下的径流控制率均达到70%以上。同时,研究发现极端降雨事件与各降雨事件下的降雨特征均对场降雨径流控制能力有不同程度的影响。研究区2009年内平均场降雨控制率为86.5%,而当分别不考虑极端小降雨/暴雨事件时,平均场降雨控制率为79.9%和88.2%。降雨量与雨前干期对场降雨径流控制能力的影响较大,在小雨(<15 mm)、中雨(10~25 mm)及大雨(>25 mm)3种不同情况下,研究区的场降雨径流平均控制率分别为98.1%、73.8%和52.9%。在雨前干期大于等于6 d的降雨事件下(共15场),场降雨径流控制率均达到90%以上。而降雨历时与平均雨强对场降雨径流控制率的影响并不显著。 | 印定坤 陈正侠 李骐安 贾海峰 刘正权 沈雷 AHMAD Shakeel | 2021 | 清华大学学报(自然科学版)2021，61，1： | 11 |
| 6 | 行距对棉花生长发育、产量及早熟性指数的影响的研究(英文)显示文摘棉花窄行密植生产是缩短棉花生长季节实现棉花早熟的主要举措,并且窄行密植对棉花的产量无显著影响。田间试验于2006年6月到2007年1月在巴基斯坦费萨拉巴德农业大学试验田进行,以确定行距对不同品系棉花的生长、生产和早熟性指数的影响。试验选取NIAB-111,CIM-496和FH-901 3个棉花品种,设置了60、75和90 cm 3种行距进行试验研究。结果表明:行距对棉花生长发育、产量和早熟性指数具有极显著影响;行距75 cm的处理产量最高达到2603 kg·hm-2,其次是行距60 cm的处理,产量为2541 kg·hm-2,但二者间差异不显著;行距60 cm的处理早熟性指数达到50.92%,显著大于其它处理;行距75 cm的处理次之。子棉产量最高的品种是FH-901,同时其早熟性指数也最高,达到54.34%。 | ANJUM Shakeel Ahmad SALEEM Muhammad Farrukh 王龙昌 薛兰兰 SHAH ID Muhammad Qasim ALI Shafaqat | 2010 | 棉花学报2010，22，6： | 11 |
| 7 | 保护性耕作农田耕层土壤养分含量动态变化研究显示文摘在西南地区三熟制套作模式下,以常规平作(T)为对照,连续2a进行大田对比试验,研究了垄作(R)、平作+秸秆覆盖(TS)、垄作+秸秆覆盖(RS)、平作+秸秆覆盖+腐熟剂(TSD)和垄作+秸秆覆盖+腐熟剂(RSD)等5种处理对农田耕层土壤养分含量的动态变化的影响。结果表明,与对照T相比,RSD,TSD,RS,TS处理均显著提高了土壤碱解氮、速效磷、速效钾、全氮、全钾含量和pH值。在3-7月份,RSD与TSD处理的土壤碱解氮、速效钾含量比RS与TS处理要高,但在10月份RSD与TSD处理的土壤碱解氮要低于RS和TS。与对照T相比,在不同时期,R处理均在一定程度上提高土壤碱解氮和全氮的含量,其它养分含量无明显差异。试验结果说明了这5种保护性耕作处理均在不同时期很好地调节了土壤养分的供应情况。 | 邹聪明 胡小东 张云兰 薛兰兰 张臻 Shakeel Ahmad Anjum 王龙昌 | 2011 | 农机化研究2011，33，2： | 11 |
| 8 | 秸秆覆盖对土壤养分和油菜生长发育的影响显示文摘通过田间试验,研究了不同秸秆(水稻秸秆和玉米秸秆)不同量覆盖条件下耕层土壤有机质、全氮、碱解氮、全磷、有效磷、全钾和速效钾的效应以及旱地油菜株高、花序数和分枝数的差异,并进行了产量分析。结果表明:秸秆覆盖对耕层土壤有机质的积累没有明显作用,总体上全氮随着秸秆覆盖量的增加而增加。同水平玉米秸秆覆盖处理较水稻秸秆覆盖处理对碱解氮的积累作用较明显;秸秆覆盖处理大部分可以提高耕层土壤全钾;不同秸秆对耕层土壤钾素的影响不同,水稻秸秆覆盖处理对土壤有效磷、全钾和速效钾的效果优于玉米秸秆覆盖;速腐剂的使用对有机质、碱解氮积累没有影响,但可以增加土壤全氮、全磷的累积,无作物的情况下速腐剂可以增加耕层土壤全钾的积累。秸秆覆盖对油菜的营养生长和生殖生长有显著促进作用,秸秆覆盖可以显著提高油菜的株高,增加分枝数和花序数;速腐剂的加施对营养生长的效果明显,但对生殖生长的效果未显现出来。秸秆覆盖可以增加油菜产量,同水平秸秆覆盖速腐剂处理的产量最高。 | 薛兰兰 Shakeel Ahmad Aunjum 刘晓建 邹聪明 胡小东 张云兰 王龙昌 | 2011 | 农机化研究2011，33，2： | 10 |
| 9 | Effects of uniconazole with or without micronutrient on the lignin biosynthesis,lodging resistance,and winter wheat production in semiarid regions显示文摘Lodging stress results in grain yield and quality reduction in wheat. Uniconazole, a potential plant growth regulator significantly enhances lignin biosynthesis and thus provides mechanical strength to plants in order to cope with lodging stress. A field study was conducted during the 2015–2016 and 2016–2017 growing seasons, to investigate the effects of uniconazole sole application or with micronutrient on the lignin biosynthesis, lodging resistance, and production of winter wheat. In the first experiment, uniconazole at concentrations of 0(CK), 15(US1), 30(US2), and 45(US3) mg L^-1 was applied as sole seed soaking, while in the second experiment with manganese(Mn) at concentration of 0.06 g L^-1 Mn, 0.06 g L^-1 Mn+ 15 mg L^-1 uniconazole(UMS1), 0.06 g L^-1 Mn+30 mg L^-1 uniconazole(UMS2), and 0.06 g L^-1 Mn+45 mg L^-1 uniconazole(UMS3), respectively. Uniconazole sole application or with micronutrient significantly increased the lignin content by improving the lignin-related enzyme activities of phenylalanine ammonia-lyase, cinnamyl alcohol dehydrogenase, tyrosine ammonialyase, and peroxidase, ameliorating basal internode characteristics, and breaking strength. The spike length, spike diameter, spikes/plant, weight/spike, yield/spike, and grain yield increased and then decreased with uniconazole application at a higher concentration, where their maximum values were recorded with UMS2 and US2 treatments. The lignin accumulation was positively correlated with lignin-related enzyme activities and breaking strength while, negatively correlated with lodging rate. Uniconazole significantly improved the lignin biosynthesis, lodging resistance, and grain yield of winter wheat and the treatments which showed the greatest effects were uniconazole seed soaking with micronutrient at a concentration of 30 mg L^-1 and 0.06 g L^-1 , and uniconazole sole seed soaking at a concentration of 30 mg L^-1 . | Irshad AHMAD MENG Xiang-ping Muhammad KAMRAN Shahzad ALI Shakeel AHMAD LIU Tie-ning CAI Tie HAN Qing-fang | 2020 | Journal of Integrative Agriculture2020，19，1： | 8 |
| 10 | Hydrogen evolution and electromigration in the corrosion of aluminium metal sheath inside high‐voltage cables显示文摘The urgent need for power transmission is the reason for leading research on the safer operation of high‐voltage cables.These high‐voltage cables are emerging as an efficient technology for underground power transmission.However,the electrochemical corrosion of aluminium(Al)metal sheaths in these cables is a common and challenging degradation process.Herein,the corrosion mechanisms and electrochemical analysis are investigated by using scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR),electrochemical impedance spectroscopy(EIS)and laboratory‐designed electro-chemical characterisation techniques.In the corrosion experiments,the authors evaluated the corrosion rate by measuring the release rate of hydrogen gas and explored the different roles of sodium polyacrylate(NaPA)during the corrosion process.It is found that the complexation reactions between NaPA and Al inhibited corrosion while increased the resistance of the buffer layer.The proposed mechanisms of corrosion in this study can improve the lifespan and sustainability of high‐voltage power transmission. | Yidong Chen Kai Zhou Jiamin Kong Shakeel Akram Xiancheng Ren Xiaoshan Zhang Yuan Li Qi Zhao | 2022 | High Voltage2022，7，2： | 7 |
| 11 | 基于能值生态足迹模型的高温伏旱区生态安全研究--以重庆市江津区为例显示文摘随着全球环境恶化的速度加快,区域生态安全问题日益突出,特别是对高温伏旱区的生态安全的研究需求越来越迫切。本文利用基于能值理论改进的生态足迹模型,对重庆市江津区2002-2007年的生态安全现状做了全面评估。结果表明:(1)2002-2007年江津区均处于较安全等级,但是安全等级程度逐年下滑,因此需要密切关注;(2)在2002年之后,江津区一直处于强不可持续状态,程度呈逐渐加深的态势。 | 邹聪明 胡小东 张云兰 薛兰兰 Shakeel Ahmad Anjum 王龙昌 | 2010 | 干旱地区农业研究2010，28，6： | 6 |
| 12 | 不同等级新疆骏枣物理特征及其对分级结果的影响显示文摘为了给红枣分级参数的选择及定量分级标准的制定提供科学依据,对新疆所产骏枣的主要特征参数进行测量和统计分析,研究了红枣各特征参数之间的相关性和各特征参数随等级的变化规律。通过聚类的方法,将红枣的8个特征参数分为5个类型,对根据不同特征参数进行分级所产生的参数误差进行了分析计算。试验结果显示,除密度外,红枣的各特征参数均对等级有显著影响,等级随特征参数标准偏差的减小而增大,各特征参数与等级之间存在显著的线性关系。各特征参数之间存在不同程度的相关性,轮廓面积和轮廓周长之间相关性最高,其次是轮廓周长和长度,除密度和质量、短径呈正相关外,密度和其他参数呈负相关。不同等级特征参数的平均误分率越高,分级效果越差;平均误分率越低,分级效果越好。密度的平均误分率最大,周长误分率最小。 | 吴明清 李传峰 罗华平 弋晓康 SHAKEEL Ahmed Soomro 陈坤杰 | 2018 | 农业机械学报2018，49，8： | 6 |
| 13 | 正常眼压性青光眼患者眼部血流的波动性变化(英文)显示文摘目的:评价正常眼压性青光眼(NTG)患者眼部血流的波动性变化。方法:前瞻性病例对照研究。彩色多普勒超声成像(CDI)用于测量正常眼压性青光眼患者的眼部血流参数-收缩期峰值流速(Vmax),舒张末期血流速度(Vd),最大速度的时间平均值(TAmax),搏动指数(PI),眼动脉(OA)阻力指数(RI)与收缩期/舒张期比值(S/D),视网膜中央动脉(CRA)和睫状后短动脉(SPCA),并对比正常人数值。比较两组采用非配对t检验,P≤0.05时有显著意义。结果:当与正常人组P值分别为0.605,0.254,0.348对比时,正常眼压性青光眼组中眼动脉,视网膜中央动脉和睫状后短动脉的收缩期峰值流速降低。当与正常人组P值分别为0.000,0.014,0.138对比时,正常眼压性青光眼组中三项的舒张末期血流速度降低。当眼动脉P值分别为0.000,0.045,视网膜中央动脉P值为0.000和0.006,睫状后短动脉P值0.024和0.024时,搏动指数和阻力指数增加。当正常人组眼动脉,视网膜中央动脉和睫状后短动脉P值分别为0.047,0.041和0.189时,正常眼压性青光眼组收缩期/舒张期比值增加。结论:研究得出彩色多普勒超声成像是测量青光眼血管组成部分的有效途径。比较正常眼压性青光眼组和正常人组时发现眼部血管血流速度下降,血管阻力指数增加。 | Tarannum Shakeel | 2016 | 国际眼科杂志2016，16，11： | 5 |
| 14 | Protein Phosphorylation and Phosphoproteome:An Overview of Rice显示文摘Protein phosphorylation,one of the major post-translational modifications,plays a crucial role in cell signaling,DNA replication,gene expression and differentiation;and alters enzyme activity and other biological activities;and regulates cell proliferation and enlargement,phytohormone biosynthesis and signaling,plant disease resistance,and grain filling and quality during rice seed development.Research work on protein phosphorylation started in the 1950 s with the discovery of phosphorylase a and phosphorylase b which are phospho and dephospho forms of the same enzyme.Over the last decade,rice proteomics has accomplished tremendous progress in setting up techniques to proteome nearly all tissues,organs and organelles.The progress made in this field is evident in number of research works.However,research on rice protein phosphorylation is still at its infancy and there are still many unanswered questions.In this review,the general description of protein phosphorylation,including history,structure,frequency of occurrence and function,are discussed.This work also elucidates the different methods for identification,qualification and finally,the progress in rice phosphoproteome research and perspectives. | Abolore Adijat AJADI Amara CISSE Shakeel AHMAD WANG Yifeng SHU Yazhou LI Shufan LIU Xixi Babatunde Kazeem BELLO Sani Muhammad TAJO TONG Xiaohong ZHANG Jian | 2020 | Rice science2020，27，3： | 5 |
| 15 | 变频电机绝缘材料关键性能及纳米改性研究进展显示文摘本文分析了脉冲电压作用下变频电机绝缘材料的关键性能。在高频脉冲电压作用下,电机绕组匝间绝缘产生的强烈局部放电,是导致变频电机绝缘破坏的主要原因。空间电荷在介质内部的分布特性,决定了介质的老化状态。热降解过程中,分子链断裂的同时生成离子基团以及气态小分子产物,加速了材料劣化过程。最后,总结了纳米改性聚酰亚胺薄膜的研究进展。 | 吴广宁 杨雁 钟鑫 Shakeel Akram 张兴涛 吴旭辉 朱健 | 2016 | 绝缘材料2016，49，9： | 5 |
| 16 | Insulating materials for realising carbon neutrality:Opportunities,remaining issues and challenges显示文摘The 2050 carbon-neutral vision spawns a novel energy structure revolution,and the construction of the future energy structure is based on equipment innovation.Insulating material,as the core of electrical power equipment and electrified transportation asset,faces unprecedented challenges and opportunities.The goal of carbon neutral and the urgent need for innovation in electric power equipment and electrification assets are first discussed.The engineering challenges constrained by the insulation system in future electric power equipment/devices and electrified transportation assets are investigated.Insulating materials,including intelligent insulating material,high thermal conductivity insulating material,high energy storage density insulating material,extreme environment resistant insulating material,and environmental-friendly insulating material,are cat-egorised with their scientific issues,opportunities and challenges under the goal of carbon neutrality being discussed.In the context of carbon neutrality,not only improves the understanding of the insulation problems from a macro level,that is,electrical power equipment and electrified transportation asset,but also offers opportunities,remaining issues and challenges from the insulating material level.It is hoped that this paper en-visions the challenges regarding design and reliability of insulations in electrical equipment and electric vehicles in the context of policies towards carbon neutrality rules.The authors also hope that this paper can be helpful in future development and research of novel insulating materials,which promote the realisation of the carbon-neutral vision. | Chuanyang Li Yang Yang Guoqiang Xu Yao Zhou Mengshuo Jia Shaolong Zhong Yu Gao Chanyeop Park Qiang Liu Yalin Wang Shakeel Akram Xiaoliang Zeng Yi Li Fangwei Liang Bin Cui Junpeng Fang Lingling Tang Yulin Zeng Xingtao Hu Jiachen Gao Giovanni Mazzanti Jinliang He Jianxiao Wang Davide Fabiani Gilbert Teyssedre Yang Cao Feipeng Wang Yunlong Zi | 2022 | High Voltage2022，7，4： | 4 |
| 17 | 不同行距对陆地棉品种纤维品质性状的影响(英文)显示文摘本研究于2006―2007年度在费萨拉巴德农业大学农业研究试验场进行,试验目的是为了比较三个不同品种陆地棉在不同的行距下的性状质量。试验处理包含三种行间距(60cm、75cm和90cm)和三种不同陆地棉品种(NIAB-111,CIM-496与FH-901)。所有的实验数据均进行变异系数的统计学分析。试验结果显示,行距显著影响GOT值,但是对纤维长度、纤维比强度、纤维整齐度和纤维细度没有影响。三种陆地棉品种之间在纤维长度、纤维比强度和纤维细度上存在显著差异,而在纤维整齐度和GOT上没有显著差异。 | SHAKEEL Ahmad Anjum SALEEM M.Farruk 王龙昌 邹聪明 SHAKEEL Amir 张云兰 | 2010 | 棉花学报2010，22，2： | 4 |
| 18 | Identification of Hydrocarbon Potential of Talhar Shale: Member of Lower Goru Formation Using Well Logs Derived Parameters, Southern Lower Indus Basin, Pakistan显示文摘Using well logs data only, the evaluation of shale gas hydrocarbon potential of Talhar Shale Member of Lower Goru Formation has been a challenge in Southern Lower Indus Basin in Pakistan. Well logs data analysis is helpful to evaluate the gas potential of source shale rocks. We introduced and applied empirical and graphical method to fulfil this task and derived geochemical parameters from well logs data. The method mentioned is cheap and fast. Talhar Shale has kerogen type III and type II which are montmorillonite clay and have potential to produce oil and gas. Talhar Shale has better sorption property. Empirical formulas are used to derive parameters, using well logs of porosity, density and uranium. Porosity and volume of kerogen, calculated from density log, give average values of 11.8% and 11.4%. Average value of level of maturity index(LMI) derived from log is 0.54, which indicates that it is at the early stage of maturity. Vitrinite reflectance is between 0.5%–0.55% as calculated by graphical method and empirical formula. Talhar Shale is at onset of oil generation, with main products of oil and gas. It is a good potential source in the study area. | Muhsan Ehsan Hanming Gu Malik Muhammad Akhtar Saiq Shakeel Abbasi Zaheen Ullah | 2018 | Journal of Earth Science2018，29，3： | 4 |
| 19 | Phyto-Toxicity of Chromium in Maize: Oxidative Damage, Osmolyte Accumulation, Anti-Oxidative Defense and Chromium Uptake显示文摘Agricultural production systems are immensely exposed to different environmental stresses in which heavy metal stress receives serious concerns. This study was conducted to explore the deleterious effects of different chromium(Cr) stress levels, i.e., 0, 30, 6090, 120, and 150 μmol L-1, on two maize genotypes, Wandan 13 and Runnong 35. Both genotypes were evaluated by measuring their growth and yield characteristics, Cr accumulation in different plant tissues, alterations in osmolyte accumulation, generation o reactive oxygen species(ROS), and anti-oxidative enzyme activity to scavenge ROS. The results showed that Cr stress decreased the leaf area, cob formation, 100-grain weight, shoot fresh biomass, and yield formation, while Cr accumulation in different maize tissues was found in the order of roots > leaves > stem > seeds in both genotypes. The increased Cr toxicity resulted in higher free proline soluble sugars and total phenolic contents, and lower soluble protein contents. However, enhanced lipid peroxidation was noticed in the forms of malondialdehyde, hydrogen peroxide(H2O2) and thiobarbituric acid reactive substance accumulation, and electrolyte leakage. The hyperactivity of superoxide dismutase, peroxidase, catalase, ascorbate peroxidase, especially glutathione peroxidase and glutathione reductase indicated that these anti-oxidative enzymes had a central role in protecting maize from Cr toxicity, especially for Wandan 13. Moreover, higher uptake and less translocation of Cr contents into the grains of Wandan 13 implied its importance as a potential candidate against soil Cr pollution. | Shakeel Ahmad ANJUM Umair ASHRAF Imran KHAN Mohsin TANVEER Muhammad SHAHID Abdul SHAKOOR WANG Longchang | 2017 | Pedosphere2017，27，2： | 3 |
| 20 | 保护性耕作下西南旱三熟农田土壤水分动态及产量效应显示文摘以西南地区麦/玉/薯三熟制种植模式为研究对象,研究了不同保护性耕作模式下旱地土壤水分动态变化、水分利用效率、作物产量和经济效应。结果表明,不同保护性耕作对整个农田生态系统产量和水分利用效率具有显著影响。秸秆覆盖(TS)、地膜覆盖(TM)、秸秆覆盖+地膜覆盖(TSM)和垄作+秸秆覆盖+地膜覆盖(RSM)能改善7,10月份0—60cm土层土壤含水量及贮水量,而垄作(R)、垄作+秸秆覆盖(RS)和垄作+地膜覆盖(RM)的作用不明显。与平作(CK)相比,RSM,RM,RS,TSM,TM,TS和R分别使系统增产10.52%,6.11%,6.77%,4.59%,5.12%,3.15%,1.24%。这些处理对水分利用效率和降水利用效率的增幅分别为1.26%~11.08%,1.27%~10.57%。研究结果说明,从WUE、降水利用效率、产量效应、经济效益这4个方面来看,垄作+秸秆覆盖+地膜覆盖耕作模式综合效益最佳。 | 邹聪明 胡小东 张云兰 薛兰兰 Shakeel Ahmad Anjum 肖发萍 李保证 王龙昌 | 2010 | 水土保持通报2010，30，6： | 3 |
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