搜索结果: 1-15 共查到“农业生物物理学 soil”相关记录152条 . 查询时间(0.234 秒)
Efficient soil solarization for weed control in the rain-fed upland rice ecosystem
solarization LDPE film rice weed control herbicide
2008/12/2
Weed competition causes significant damage (up to 90%) to crop yields. Weed control through chemical means in the form of herbicide is commonly used to kill weeds or inhibit their growth throughout t...
Soil water, solute storage and drainage in a deeply loosened, heavy-clay soil of southern Romania
leaching internal drainage soil water flux
2008/12/2
One year after draining and extensively loosening heavy-clay soils, irrigation water was sprinkled over it daily for 10 h for a 3-day period, using a 10 mm h-1 rate, perpendicularly over plastic drain...
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 ...
Microbial transport in soil caused by surface and subsurface drip irrigation with treated wastewater
bacteriophage fecal coliforms irrigation soil wastewater
2008/11/26
The objective of this work was to compare and simulate transport and fate of microorganisms from wastewater for surface and subsurface irrigation methods. Adsorption isotherms and water-content depend...
Microbiological indices of soil quality fertilized with dairy sewage sludge
dairy sewage sludge microorganisms respiration activity soil
2008/11/26
The study was performed on a pot experiment in which a grey-brown podzolic soil was amended with two different doses of dairy sewage sludge (30 and 75 t ha-1) – 1 and 2.5% of DSS. During periode of in...
Modelling infiltration rate in conditioned soil: comparisonsand modifications
infiltration conditioned soils models
2008/11/26
Prediction of the influence of waste application on agricultural land and on the dynamics of infiltration is crucial for the optimum management of soil water as well as contaminants from runoffs. Thr...
Modelling the effects of repeated wheel loads on soil profiles
compaction wheel loads soil strength finite element modelling
2008/11/26
Compaction of soil caused by increasing mechanical loads and repeated wheeling may result in reduced soil productivity. The physical response of soils to such loading is analysed with a non-linear fin...
Concurrent transport of reactive and non-reactive ions in undisturbed soil columns
transport reactive and non-reactive ions soil
2008/11/26
Advective-dispersive contaminant transport in soils continues to be a subject of extensive studies. Transport of conservative tracers, ie non-reactive ions, is mostly affected by soil physical heterog...
Directional character of soil surface reflectance in the visible and near-infrared range
soil surface reflectance bidirectional reflectance distribution function remote sensing
2008/11/26
The paper shows the importance of directional effects on soil reflectance in the visible and near -infrared range. It includes physical principles of surface interactions with radiation in this spectr...
Application of sodium hypochlorite in the technique of soil section preparation
sodium hypochlorite soil structure soil section
2008/11/26
Image analysis of soil section is often used by soil scientists in order to quantify the soil structure and macro-pore properties. During the computer image analysis the most difficult and error-burde...
Agro-climatic change and european soil suitability: regional modelling at monthly time-steps
model land use evaluation soil water balance crop phenology agro-climate
2008/11/26
This paper describes the development of ACCESS-I (Agro-Climatic Change and European Soil Suitability), a model that will simulate the soil water balance and crop growth, for soil map units within regi...
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....
Accuracy of soil moisture measurement by tdr technique
time domain reflectometry soil moisture measurement error
2008/11/26
The error in the measurement of volumetric water content by the TDR technique results from the correlation imperfections between the directly measured values of soil refractive index, n, and the real ...
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...
Aspects of red soil properties and water management in China
soil water red soil in China
2008/11/26
This paper is a brief reviev of studies on red soil water properties and its management in the tropics and subtropics of China. Although annual precipitation is more than evaporation, there is still s...
