搜索结果: 1-13 共查到“农业生物物理学 oxygen”相关记录13条 . 查询时间(0.175 秒)
A comparison of oxygen diffusion rates in sand moistened with water or peg 20000 solution
ODR PEG solutions water/sand/air mixtures
2008/11/26
Oxygen diffusion rates (ODR) were measured in water/sand/air and PEG solution/sand/air mixtures, spanning a range of liquid/solid/air volume ratios. Replacement of water with PEG solution as the liqu...
Comparison of two- and three-electrode systems in measurements of potential oxygen flux density in soil*
soil aeration soil oxygen flux ODR OFD
2008/11/24
This paper presents a comparison of the results of potential flux of oxygen in soil, determined by the voltammetric method, OFD, with the use of a three-electrode set of electrodes in the system of po...
Chronovoltammetric determination of oxygen flux density in the soil
oxygen diffusion rate determination ODR of soil soil aeration oxygen flux density
2008/11/21
A chronovoltammetric method for the determination of oxygen flux density (OFD) in the soil is proposed. The method is based on the current-potential relationship recorded on a platinum indicator elect...
Determination of the background current in electrochemical measurements of oxygen flux density in organic soils
oxygen flux density in the soil measurements ODR OFD
2008/11/21
The aims of this paper were: to state if the soluble substances contained in organic or organic-mineral soils can reduce in the same range of potentials as oxygen, falsifying (revaluing) the results ...
Determination of the integration range in voltammetric measurements of oxygen flux in the soil with the use of two- and three-electrode systems
soil aeration soil oxygen flux density ODR
2008/11/21
This paper presents the methodological aspects of the measurement of oxygen flux in the soil by voltammetric method with the use of three- (with potentiostat) and two-electrode systems. The studies we...
Effect of oxygen deficiency on soil dehydrogenase activity(pot experiment with barley)
dehydrogenase activity soil aeration parameters barley oxygen diffusion rate redox potential
2008/11/20
Changes of dehydrogenase activity in Orthic Luvisol developed from loess (Ap horizon) under different aeration conditions were observed in a greenhouse pot experiment with barley Hordeum vulgare L. c...
Effect of oxygen deficiency on the macroelement content of the soil(pot experiment with barley cv. Aramir vegetation)
oxygen deficiency macroelements soil
2008/11/20
A greenhouse experiment to test the relationship between the oxygen status of soil and the macroelement content was conducted. N-NH4+, N-NO3-, P and K content in the soil under oxygen stress conditio...
Effect of oxygen on UV-induced photodegradation of humic acid obtainedfrom composted hulls of Juglans regia walnut**
humic acid walnut hulls photodegradation
2008/11/20
In this paper the physicochemical and spectroscopic properties of humic acid (HA) obtained from composted walnut shell of Juglans regia are described. The influence of oxygen on UV-induced photodegrad...
Effect of oxygen deficiency on soil dehydrogenase activity in a pot experiment with triticale cv. Jago vegetation
soil aeration status dehydrogenase activity triticale redox potential oxygen diffusion rate
2008/11/19
Dehydrogenase activity of an Orthic Luvisol developed from loess (Ap horizon) was observed in a greenhouse pot experiment with triticale cv. Jago vegetation under different aeration conditions. Soil ...
Effect of oxygen deficiency on soil dehydrogenase activity(pot experiment with barley)
dehydrogenase activity soil aeration parameters barley oxygen diffusion rate redox potential
2008/11/19
Changes of dehydrogenase activity in Orthic Luvisol developed from loess (Ap horizon) under different aeration conditions were observed in a greenhouse pot experiment with barley Hordeum vulgare L. cv...
Influence of oxygen conditions on the yield and mineral compositionof triticale cv. Jago
triticale yield ODR Eh
2008/11/14
Plants in the farmland ecosystem are subject to impeded aeration at some stages in their development. The achievement of long term tolerance to prolonged periods of poor aeration by some plants holds ...
Oxygen concentration in primary roots of broadbean, lupin and pea seedlings as measured with a microelectrode
Lupinus angustifolius L Pisum sativum Vicia faba oxygen in roots oxygen microelectrode
2008/11/13
The paper presents method of measuring the internal oxygen concentration of intact non-lignified plant roots with an oxygen sensitive Clark - type micro-electrode, also allowing the measurement of oxy...
Simultaneous measurement of oxygen flux and salinity of the water saturated mineral soils
soil salinity soil oxygen flux density ODR OFD
2008/11/12
This paper presents a possibility current-voltage curve interpretation, registered in the saturated soil, in categories of soil salinity evaluation. A quantity containing the information about the sal...