搜索结果: 1-15 共查到“农学总论 Soil Water”相关记录16条 . 查询时间(0.343 秒)
Robust and cost-effective system for measuring and logging of data on soil water content and soil temperature profile
Data-Logger Soil Temperature Soil Water Content Microcontrollers Sensors
2013/3/4
The paper describes the system for measuring and logging of data on soil water content and soil temperature profile. The system was tested in a field and shows great potential for performing continuou...
Effects of Epibrassinolide and Abscisic Acid on Sorghum Plants Growing under Soil Water Deficit : II. Physiological basis for drought resistance induced by exogenous epibrassinolide and abscisic acid
Abscisic acid Brassinolide Cuticular transpiration Drought resistance Sorghum Stomatal transpiration
2009/7/31
It was reported that pretreatment with abscisic acid (ABA) increased the drought resistance of sorghum plants and that 22R, 23R epibrassinolide (EBR) enhanced the effects of ABA. To explore the mecha...
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...
Influence of groundwater depth and available soil water on evapotranspiration and plant growth
actual evapotranspiration plant available soil water dry matter yield cropland grassland coniferous forest
2008/11/24
There is a close relationship between available soil water and water consumption as well as plant growth if we assume adequate soil aeration. Transpiration and plant growth increase with an increasing...
Comparison of soil thermal properties in cultivated fields determined using soil water content measured by two methods
soil thermal properties soil water content TDR methods
2008/11/21
Results of the measurements of water content in the topsoil layer (1-6 cm) in fields with various crops obtained by gravimetric and reflectometric (TDR) methods have been used for the calculations of ...
Ifluence of soil structural parameters on hydraulic functions for soil-water balance modelling
soil strucutre parameters soil hydraulic properties soil-water balance modelling tension infiltrometer Guelph permeameter
2008/11/18
The investigations were conducted to prove the application of different methods for measuring soil hydraulic properties. Estimations of unsaturated hydraulic conductivity with different models were co...
Possible effects of soil contamination by light non-aqueous phase liquids (LNAPLs) on soil water parameters and their consequences
water retention pore size distribution surface tension angle of contact LNAPL-contamination soil water regime
2008/11/13
In central Germany a loess derived site contaminated with very different light non-aqueous phase liquids (LNAPLs) emanating from production of mineral oils, was eva- luated with respect to soil water...
Practical experiences with the EASY TEST FOM moisture meter in assessing the soil water balance of a maize field
soil water balance maize TDR moisture meter
2008/11/13
Systematic measurements of the water content at different depths below a continuous maize crop by the EASY TEST FOM soil moisture meter and their use for calibration of the SIMWASER simulation model a...
Predicting the soil water retention curve from readily-a vail able data obtained during soil surveys
model pedotransfer functions van Genuchten equation soil water retention
2008/11/13
Averages and coefficients of variation of the parameters of the van Genuchten equation were estimated, in relation to a large dataset, for soil particle-size classes differentiated according to the pr...
Relationship between the impedance of a multi-pin probe and soil water content
impedance dielectric constant soil water content multi-pin probe model
2008/11/12
Based on the theory of the impedance-transform of transmission line, a mathematical model for calculating the impedance of a soil probe with a multi-pin structure was developed. It is found that the ...
Simulation of the soil water regime for grassland irrigation
water flow in soil evapotranspi ration crop production irrigation predicted
2008/11/12
The principle aim of this study was to develop a model to predict the water processes under growing grass. This paper includes: the GRAGRO model simulates the vertical flow in an unsaturated homogeneo...
Temporal stability of estimated soil water flux patterns across agricultural fields
soil water flux temporal stability agricultural fields
2008/11/12
When a field or a small watershed is repeatedly surveyed for soil water content, sites often can be spotted where soil is consistently wetter or consistently dryer than average across the study area. ...
The soil characteristics and water balance of an arid sand dune ecosystem were investigated in Nizzana, NW Negev Desert, Israel. The main emphasis was placed on the relations between atmosphere, veget...
Soil water potential moisture characteristics of different aggregate fractions of eutric cambisol and gleyic phaeozem unstabilized and stabilized with soil conditioner (solacrol)
soil aggregation soil conditioner (Solacrol) water retention
2008/11/11
Changes in water retention caused by an addition of a soil conditioner (Solacrol), stabilizing soil aggregates, are presented in the paper. The investigations were carried out on two soils, i.e., Eutr...
The model cornway - a tool for analysing the relation between soil-water regime and the yield of maize (zea maysl.)
simulation model grain yield of maize stress factor stress-day index planting date delay
2008/11/10
Submodels for simulation of the effect of soil water regime (GLOBAL) and grain yield of maize (ZeaMays, L.) CORNY can be modified and then used simultaneously as a model CORNWAY to estimate relative p...