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137篇 您的检索式:作者名="Kirchmann"
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1减少农田硝酸盐淋溶的可能性显示文摘农业土壤对自然水体中的硝酸盐含量有影响。,从土壤中排出的高浓度的硝酸盐溶液关系到饮用水中硝酸盐的高浓度,同时,过量的硝酸盐还会改变河流、湖泊的生态平衡。本文对通过改善农业措施减少硝酸盐淋溶这个重大环境问题进行了讨论。对农业土地硝酸盐淋溶的原因做了简略的解释,对于减少硝酸盐淋溶的现有措施做了描述、分析和评价。减少养分淋溶不是实施有机农业或传统农业所能解决的问题,而是应该通过引进和使用适当的对策来加以解决。为此,本文提出了最大限度地降低农业土壤养分淋溶的下述指导性原则,在某种程度上实施这些指导性原则需要一种新的观念①在分析一个小流域内的养分淋溶时,应考虑到农田的环境指数和空间变异性对其的影响;②通过减少氮肥使用量和降低动物饲养密度,将土壤中的氮肥施用量降低到某一合理的水平,这一水平应稍低于土地预期最适产量的氮需求量;③依据不同地区耕作系统、土壤和气候对硝酸盐淋溶的敏感性,采取相应的对策来控制硝酸盐的淋溶,如作物间作、土地少耕或免耕、调节生物过程等。Holger Kirchmann A.E.Johnny Johnston Lars F.Bergstrm 张耀军 2002AMBIO-人类环境杂志2002,31,5:3
2Composting and storage of organic household waste with different litter amendments. I: carbon turnover显示文摘Y Eklind H Kirchmann 2000Bioresource Technology2000,,2:2
3The genetic spectrum of a population-based sample of familial hemiplegic migraine显示文摘Thomsen LL Kirchmann M Bjornsson A 2007Brain2007,130,2:1
4Leaching and crop uptake of nitrogen and phosphorus from pig slurry as affected by different application rates显示文摘Lars Bergstrom Holger Kirchmann 2006Environmental Quality2006,35,5:1
5Carbon and nitrogen mineralizationand ammonia volatilization from fresh, aerobically andanaerobically treated pig manure during incubation with soil 显示文摘Bernal M P Kirchmann H 1992Biology and Fertility of Soils1992,13,3:1
6High performance liquid chromatographic separation and electrochemical detection of penicillins 显示文摘Kirchmann E Welch LE 1993J Chromatogr1993,633,:1
7Separately collected organic household wastes,chemical composition and eomposting characteristics显示文摘Kirchmann H Widen P 1994Swedish J Agric Res1994,3,:1
8Increasing the pH of wastewater to high levels with different gases-COx stripping 显示文摘Cohen Y Kirchmann H 2004Water Air and Soil Pollution2004,159,1:1
9Ammonia volatilization during aerobic and anaerobic manuredecomposition显示文摘Kirchmann H Witter E 1989Plant and Soil1989,115,1:1
10Ammonia volatilization during aerobic and anaerobic manure decomposition显示文摘H. Kirchmann E. Witter 1989Plant and Soil1989,,1:1
11The effect of moisture on the decomposition rate of cattle manure显示文摘H. K. Murwira H. Kirchmann M. J. Swift 1990Plant and Soil1990,,2:1
12Do organic farming practices reduce nitrate leaching? 显示文摘Holger Kirchmann 2001Soil Science and Plant Analysis2001,32,:1
13Leaching of total nitrogen from nitrogen-15- labeled poultry manure and in organic nitrogen fertilizer 显示文摘Bergstrom L F Kirchmann H 1999Journal of Environment Qulaity1999,28,12:1
14Composting and storage of organic household waste with different litter amendments II~nitrogen turnover and losses 显示文摘Eklind Y Kirchmann H 2000Bioresouree Technology2000,74,:1
15An epidemiological survey of hemiplegic migraine显示文摘Lykke TL Kirchmann EM Faerch RS 2002Cephalalgia2002,22,5:1
16Trigger factors in migraine with aura显示文摘Hauge AW Kirchmann M Olesen J 2010Cephalalgia2010,30,3:1
17Use of CD34 in assessing the relationship between stroma and tumor in desmoplastic keratinocytic neoplasms显示文摘Kirchmann TT Prieto VG Smoller BR 1995J Cutan Pathol1995,22,5:1
18Separately collected organic household wastes显示文摘Kirchmann H Widen P 1994Swedish Journal of Agricultural Research1994,24,1:1
19Carbon and nitrogen in arable soils asaffected by supply of N fertilizers and organic manures 显示文摘Persson J Kirchmann H 1994Agriculture Ecosystems and Environment1994,51,12:1
20Challenging targets for future agriculture显示文摘Holger Kirchmann 2000European Journal of Agronomy2000,,12:1
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