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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 | The effect of biocidal treatments on metabolism in soil, a method for measuring soil biomass 显示文摘 | Jenkinson D S Powlson D S | 1976 | Soil Biology and Biochemistry1976，8，3： | 1 |
| 5 | Measurement of soil microbial biomass provides an early indication of chan- ges in total soil organic matter due to straw in corporation 显示文摘 | Powlson D S Brookes P C Christensen B | 1987 | Soil Biol Bioehem1987，19，： | 1 |
| 6 | Phosphorus in the soil mi- crobial biomass显示文摘 | Brooks P C Powlson D S Jenkinson D S | 1984 | Soil Biol Biochem1984，16，： | 1 |
| 7 | Measurement of microbial biomass phosphorus in soil 显示文摘 | BROOKES P C POWLSON D S JENKEINSON D S | 1982 | Soil Biology & Biochemistry1982，14，： | 1 |
| 8 | Measurement of soil microbial biomass provides an early indication of changes in total soil organic matter due to straw incorporation显示文摘 | Powlson D S Brookes P C Christensen B T | 1987 | Soil Biology and Biochemistry1987，19，： | 1 |
| 9 | Potential for carbon sequestration in European soils:Preliminary estimates for five scenarios using results from long-term experiments显示文摘 | Smith P Powlson D C Gledining M J | 1997 | Global Change Biol1997，，3： | 1 |
| 10 | A comparison of the organic matter, biomass, adenosine triphosphate and mineralizable nitrogen contents of ploughed and direct-drilled soils显示文摘 | Powlson DS Jenkinson D | 1981 | Journal of Agricultural Science1981，97，： | 1 |
| 11 | Effects of N fertilizers and liming on the micro-scale distribution of soil methane assimilation in the long-term Park Grass experiment at Rothamsted显示文摘 | Stiehl-Braun PA Powlson DS Poulton PR | 2011 | Soil Biology and Biochemistry2011，43，5： | 1 |
| 12 | Long-term effects of nitrogen fertilization on methane oxidation in soil of the Broadbalk wheat experiment显示文摘 | Hütsch B W Webster C P Powlson D S | 1993 | Soil Biology and Biochemistry1993，25，： | 1 |
| 13 | Soil carbon sequestration to mitigate climate change: a critical re examination to identify the true and the false显示文摘 | Powlson D S Whitmore A P Goulding K W T | 2011 | European Journal of Soil Science2011，62，1： | 1 |
| 14 | The nitrogen cycle in the Broadbalk wheat experiment: Recovery and losses of 15N-labelled fertilizer applied in spring and inputs of nitrogen from atmosphere显示文摘 | Powlson D S Pruden G Johnston A E | 1986 | Journal of Agricultural Science1986，107，： | 1 |
| 15 | The potential to increase soil carbon stocks though reduced tillage or organic material additions in England and Wales:A case study显示文摘 | Powlson D S Bhogal A Chambers B J | 2012 | Agriculture Ecosystems Environment2012，146，： | 1 |
| 16 | Phosphorus in the soil microbial biomass 显示文摘 | Brookes P C Powlson D S Jenkinson D S | 1984 | Soil Biol Biochem1984，16，： | 1 |
| 17 | Measurement of soil microbial biomass provides an early indication of changes in total organic matter due to straw incorporation 显示文摘 | Powlson D S Brockes P C Christensen B T | 1987 | Soil Biology &Biochemistry1987，19，： | 1 |
| 18 | A comparison of the performance of nine soil organic matter models using datasets from long-term experiments 显示文摘 | SMITH P SMITH J U POWLSON D S | 1997 | Geoderma1997，81，12： | 1 |
| 19 | The nitrogen cycle in the Broadbalk wheat experiment: 15N-labelled fertilizer residues in the soil and in the soil microbial biomass显示文摘 | Shen S M Hart B S Powlson D S | 1989 | Soil Biology and Biochemistry1989，21，4： | 1 |
| 20 | Considering manure and carbon sequestration显示文摘 | SMITH P POWLSON D S | 2000 | Science2000，，： | 1 |
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