搜索结果: 1-15 共查到“农业生物物理学 structure”相关记录18条 . 查询时间(0.265 秒)
Intersecting-surfaces approach to soil structure
surface- and volume-like objects pores grains aggregates
2008/11/26
The large number of intersecting surfaces in a volume divides the latter into small sub-volumes. Each of the sub-volumes is outlined or nearly outlined by parts of the intersecting surfaces. A number ...
Advantages of application of the backscattered electron scanning image in the determination of soil structure and soil constituents
backscattered electron scanning image soil structure soil components
2008/11/26
Submicroscopic techniques can be broadly subdivided into the study of micromorphology and imaging of the arrangement of the soil particles and voids, and the microchemical analysis of soil components....
Accessibility of most frequently used physical parameters of soil structure, reliability of measured values, lack of replicates andways out of this dilemma
bulk density saturated hydraulic conductivity limited data-sets outflanking techniques
2008/11/26
Assessment of soil structure and still more its changes is impeded by peculiarities of sampling and measurement. Unavoidable local destructions tend to advance use of small numbers of replicates, samp...
Attempt to application of image processing to evaluation of changes in internal structure of wheat grain*
wheat grain weray detection image analysis
2008/11/26
Test experiments have been carried out concerning the application of computer analysis of X-ray images for the assessment of the changes in inner structure of wheat grain subjected to the process of w...
Image analysis as the quantitative estimation of the structure of agricultural materials*
probabilistic micromechanics agricultural materials structure image analysis
2008/11/26
Deformable media which are the objects of interest of agrophysics are distinguished by the fact that they are composed of three phases and each of them clearly pronounce its specific role. Comparing e...
Impact of the long-term straw supply on loess-derived soil structure
plant residues slaking soil structural properties organic matter
2008/11/26
Keeping plant residues on the field and incorporating them instead of removing or burning them, is a well-known practice in soil and water conservation. One of the objectives of this management is to...
Analysis of the interrelation between the heat balance structure, type of plant cover and weather conditions
heat balance evapotranspiration latent heat sensible heat Bowen ratio
2008/11/26
There are many ways of micrometeorological description of the environment. One of them is the analysis of heat balance of an active surface which characterizes very well areas with different plant cov...
Impacts of soil structure on crop growth
soil structure parameters simulation modelling root distribution crop growth
2008/11/24
Intensive agricultural utilisation of soils may change the structural status and through it the credibility and fertility of soils. Since soil structure has not been quantified explicitly, studying st...
Fractal structure of starch extrudates-investigation by small angle x-ray scattering
fractal structure SAX scattering starch extrudates
2008/11/18
Small angle X-ray scattering has been applied to the study of structure of potato starch and wheat flour extrudates. The range changes of microstructure deformation after extrusion cooking processes w...
Research on the impact of mass fractions of multi-element granular structure on the mixing process
granular material heterogeneous granular structure multi-element granular structure cluster analysis
2008/11/18
Knowledge concerning mechanisms that govern the mixing process of multi-element heterogeneous granular structures is still not sufficient. The description of a mixing process where one of the factors ...
Scale cutoffs and the limits of fractal soil structure
fractals soil structure bulk density porosity soil organic matter
2008/11/13
with a scaling factor ranging between b=1.66 and b=6.41. Both the maximum number of model iterations, imax, and n correlated positively with soil organic carbon. Knowing the limits of fractal behavio...
Relations between soil structure, number of selected groups of soil microorganisms, organic matter content and cultivation
soil structure microorganisms organic matter cultivation system
2008/11/12
The aim of this work was to fiut relations between the number of selected groups of soil microorganisms, water stability of soil aggregates, soil porosity and the organic matter content on the basis o...
Seasonal variation of some soil structure indicators
polysaccharides aggregation soil structure
2008/11/12
Seasonal changes of soil carbohydrate and root weight were studied for the grey forest soil at different phases of the growth of barley. The soil structure was characterized simultaneously by soil ag...
Soil structure as an ecology forming factor
soil structure simplex-lattice plan optimization combined machine
2008/11/11
The aim of the investigations consisted in determination of the optimum ratio of structural components in the sowing layer of the chernozem on cultivation of cereal ear crops and development of a comb...
Soil structure parameters in models of crop growth and yield prediction. physical submodels
soil structure parameters crop growth and yield prediction models physical submodels
2008/11/11
The role of chosen soil structure parameters in models of crop growth and yield prediction has been analysed on the base of the review of the latest literature. It was stated that the most frequently ...