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| 1 | 土壤硝酸盐试纸条-反射仪测定法存在问题及其解决方案显示文摘针对浸提方法影响硝酸盐试纸条-反射仪法结果的问题,选择陕西关中的土娄土和渭南的黑垆土为供试材料,通过室内对比试验,对土壤硝酸盐浸提剂、振荡与沉淀时间及水土质量比等因素进行优化。结果表明,浸提剂类型、振荡与静置时间均对试纸条-反射仪法的土壤硝酸盐测试结果产生较大影响,而水土质量比对测定结果无显著影响,最终确定利用饱和硫酸钙作为浸提剂、振荡10 min、静置5 min为最佳前处理方法,在此条件下,硝酸盐试纸条-反射仪法测试结果准确,测试效率高。 | 王芳 高鹏程 同延安 张树兰 张恒 LU Yuelai David Powlson | 2011 | 西北农业学报2011，20，3： | 6 |
| 2 | Agriculture Green Development in China and the UK: common objectives and converging policy pathways显示文摘This paper has three aims.First,to examine how the negative environmental consequences of intensive agriculture have driven China and the UK to shift away from narrowly focused farm output policies and adopt more holistic green development pathways.Second,to explore the policy objectives they have in common.Third,to assess the numerous opportunities for joint research and knowledge sharing through the Sustainable Agriculture Innovation Network and other existing institutional mechanisms.The intensification of agricultural production in the UK started several decades earlier than in China as did the negative environmental consequences of the farm practices.However,their strategies and policies for sustainable intensification and green development have much in common.These are set out in two main documents:the Chinese State Council guidelines for green agriculture and the UK Department for Environment,Food and Rural Affairs 25 Year Environment Plan.There are substantial mutual advantages from greater collaboration on problem identification and monitoring;the development of appropriate technological and management responses and the formulation of sound policies.To achieve this potential,it is recommended that further thought be given to how best to bring together all of the key stakeholders along the whole food chain. | Yuelai LU David NORSE David POWLSON | 2020 | Frontiers of Agricultural Science and Engineering2020，7，1： | 5 |
| 3 | 减氮施肥推广技术在陕西的实践显示文摘氮素面源污染是中国最为严重的环境问题之一,过量使用氮肥是土壤氮素面源污染的主要原因。作为一项利于资源和环境的农业生产技术,减氮施肥的效果虽然在试验和示范中不断被验证,然而由于常规推广方法的局限性,这一技术并没有为广大农户所采用。通过调查分析农民过量施肥发生的原因,有针对性地为农民提供多样化的培训活动,使得农民充分了解氮肥相关知识以及过量使用氮肥对环境的负面影响,同时开展由农民主导的减氮施肥试验示范,结合氮素速测仪测定播前土壤氮素含量,帮助农民制定出合理氮肥用量,此外,利用村内能人的带动作用以及农民专业协会的网络功能,推动减氮施肥技术在农民群众间的扩散,使其成为农民生产中的自觉行为。 | 高鹏程 同延安 张树兰 张恒 Lu Yuelai David Powlson | 2010 | 陕西农业科学2010，56，1： | 3 |
| 4 | Measuring soil microbial biomass显示文摘 | David S. Jenkinson Philip C. Brookes David S. Powlson | 2003 | Soil Biology and Biochemistry2003，，1： | 1 |
| 5 | Towards an integrated global framework to assess the impacts of land use and management change on soil carbon: current capability and future vision显示文摘 | Pete Smith Christian A. Davies Stephen Ogle Giuliana Zanchi Jessica Bellarby Neil Bird Robert M. Boddey Niall P. M c Namara David Powlson Annette Cowie Meine Noordwijk Sarah C. Davis Daniel DE B. Richter Len Kryzanowski Mark T. Wijk Judith Stuart Akira Ki | 2012 | Glob Change Biol2012，，7： | 1 |
| 6 | PROGRESS ON IMPROVING AGRICULTURAL NITROGEN USE EFFICIENCY: UK−CHINA VIRTUAL JOINT CENTERS ON NITROGEN AGRONOMY显示文摘Two virtual joint centers for nitrogen agronomy were established between the UK and China to facilitate collaborative research aimed at improving nitrogen use efficiency(NUE)in agricultural production systems and reducing losses of reactive N to the environment.Major focus areas were improving fertilizer NUE,use of livestock manures,soil health,and policy development and knowledge exchange.Improvements to fertilizer NUE included attention to application rate in the context of yield potential and economic considerations and the potential of improved practices including enhanced efficiency fertilizers,plastic film mulching and cropping design.Improved utilization of livestock manures requires knowledge of the available nutrient content,appropriate manure processing technologies and integrated nutrient management practices.Soil carbon,acidification and biodiversity were considered as important aspects of soil health.Both centers identified a range of potential actions that could be taken to improve N management,and the research conducted has highlighted the importance of developing a systemslevel approach to assessing improvement in the overall efficiency of N management and avoiding unintended secondary effects from individual interventions.Within this context,the management of fertilizer emissions and livestock manure at the farm and regional scales appear to be particularly important targets for mitigation. | Tom MISSELBROOK Zhaohai BAI Zejiang CAI Weidong CAO Alison CARSWELL Nicholas COWAN Zhenling CUI David RCHADWICK Bridget EMMETT Keith GOULDING Rui JIANG Davey LJONES Xiaotang JU Hongbin LIU Yuelai LU Lin MA David POWLSON Robert MREES Ute SKIBA Pete SMITH Roger SYLVESTER-BRADLEY John WILLIAMS Lianhai WU Minggang XU Wen XU Fusuo ZHANG Junling ZHANG Jianbin ZHOU Xuejun LIU | 2022 | Frontiers of Agricultural Science and Engineering2022，9，3： | 0 |
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