|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 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.Bergstrm 张耀军 | 2002 | AMBIO-人类环境杂志2002，31，5： | 3 |
| 2 | Leaching and crop uptake of nitrogen and phosphorus from pig slurry as affected by different application rates显示文摘 | Lars Bergstrom Holger Kirchmann | 2006 | Environmental Quality2006，35，5： | 1 |
| 3 | Do organic farming practices reduce nitrate leaching? 显示文摘 | Holger Kirchmann | 2001 | Soil Science and Plant Analysis2001，32，： | 1 |
| 4 | Challenging targets for future agriculture显示文摘 | Holger Kirchmann | 2000 | European Journal of Agronomy2000，，12： | 1 |
| 5 | Bulk soil C to N ratio as a simple measure of net N mineralization from stabilized soil organic matter in sandy arable soils显示文摘 | Günther Springob Holger Kirchmann | 2003 | Soil Biology and Biochemistry2003，，4： | 1 |
| 6 | Challenging targets for future agriculture显示文摘 | Holger Kirchmann | 2000 | Eu-ropean Journal of Agronomy2000，，12： | 1 |
| 7 | Challenging targets for future agriculture显示文摘 | Holger Kirchmann Gudni Thorvaldsson | 2000 | European Joumal of Agronomy2000，12，34： | 1 |
| 8 | Challenging targets for future agriculture显示文摘 | Holger Kirchmann | 2000 | European Journal of Agronomy2000，，12： | 1 |
| 9 | Increasing the ph of wastewater to high levels wit different gases--CO2 stripping显示文摘 | Yariv Cohen Holger Kirchmann | 2004 | Water Air and Soil Pollution2004，，159： | 1 |
| 10 | Bulk soil C to N ratio as a simple measure of net N mineralization from stabilized soil organic matter in sandy arable soils显示文摘 | Günther Springob Holger Kirchmann | | Soil Biology and Biochemistry0，，： | 1 |
| 11 | Wheat yield prediction by zero sink and equilibrium-type soil phosphorus tests显示文摘Diffusive gradients in thin films(DGT)measurements have been shown to outperform other phosphorus(P)tests in soils with strong P sorption,but this has not been confirmed for moderately weathered European soils.We compared the performance of DGT in predicting wheat grain yield in Swedish long-term fertility experiments with those of standard intensity(water-extractable P(P-H2O))and quantity(ammonium lactate-extractable P(P-AL))tests.A Mitscherlich-type model was used to fit wheat yield response to P application rates(0,15,30 or 35,and 45 kg P ha-1 year-1)in each individual trial replicate to estimate the maximum yield.For trials with clear plateau-type yield responses and the goodness of fit(R2)>0.75,relative yields(RYs)were calculated for each P treatment and plotted against the soil P test results(n=143).The goodness of the Mitscherlich-type fits decreased in the following order:DGT-measured P(P-DGT)(R2=0.35)>P-H2O(R2=0.18)>P-AL(R2=0.13).When excluding soils with P-AL:P-DGT≥0.1 L g-1,R2 was considerably improved to 0.55 for P-AL,0.46 for P-H2O,and 0.65 for P-DGT(n=61).At 95%of maximum yield,the upper limit of P deficiency for P-DGT was 44.8(the soils with P-AL:P-DGT<0.1 L g-1)and 61.9μg L-1(all soils),falling within the range reported for other European and Australian soils(6.0–142μg L-1).We show that in the investigated Swedish soils,DGT performed better than the quantity and intensity tests,which is attributed to its ability to capture P diffusion and resupply from the soil solid phase,similar to plant roots in the rhizosphere. | Walter W.WENZEL Cornelia MESMER Eric J.FLORIDA Markus PUSCHENREITER Holger KIRCHMANN | 2022 | Pedosphere2022，32，4： | 0 |
| 12 | 提高农业种植体系有机物质中氮利用的可能性研究显示文摘土壤有机养分源中的氮释放受许多因子的影响,如土壤温度和水分、有机物质的化学组成。在某种程度上,控制有机物质的化学组成可以增加氮释放和植物需求的同步性,而气候因子是不能控制的,因此在计划管理措施时要考虑这些因素。本文通过调节新鲜或预处理过的植物材料和牲畜粪肥的化学组成、施用时间以及有意分配,来探讨影响氮释放的不同途径。最后阐述提高氮利用率需要实施的农场外的(off-farm)的选择,尤其是对氮过剩的农业体系。 | Sigrun Dahlin Holger kirchmann Thomas Ktterer Sophie Gunnarsson Lars Bergstrm 张秋英 | 2005 | AMBIO-人类环境杂志2005，34，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员