搜索结果: 1-15 共查到“农学 m coefficient”相关记录22条 . 查询时间(0.093 秒)
Determination of correction coefficient of average skidding distance according to the existing road network in Alikia Soltan forest of Iran
theoretical average skidding distance real average skidding distance skid trails
2015/4/24
One of the factors in planning forest roads is average skidding distance which is calculated in projects from the map, according to forest road density, however it has a low accuracy. In this study re...
Evaluation of pan coefficient equations in a semi-arid Mediterranean environment using the ASCE-standardized Penman-Monteith method
Pan Evaporation Reference Evapotranspiration ASCE-Standardized Penman-Monteith
2013/2/27
Reference crop evapotranspiration (ETo) is essential for irrigation, water resources management and environmental assessment. The indirect estimation of ETo is based a) on energy budget approach using...
Modelling the backscattering coefficient of salt-affected soils using AIEM model
Soil salinity dielectric constant dielectric mixing model backscattering coefficient AIEM
2013/9/2
Soil salinity principally affects soil properties, environment and productivity of agricultural areas for developing countries. Currently, no inversion algorithms exist for directly determining soil s...
Estimating crop coefficient model for upland rice (NERICA) under sprinkler irrigation system
Crop coefficient upland rice sprinkler irrigation
2011/1/10
Efficient crop coefficient (Kc) estimation is very important to adequately determine water use of a selected crop. In this study, crop coefficient was determined for upland rice (NERICA) under a sprin...
Theoretical Analysis and Experimental Verification of a Remotely Measurable Plant Transpiration Transfer Coefficient
remote sensing sensible heat flux surface temperature
2009/9/10
The objectives of this study are to propose a remotely measurable plant transpiration transfer coefficient (hat) and to verify its characteristics under various environmental conditions. The hat is de...
Effects of Planting Pattern on the Interception of Solar Radiation by the Canopy and the Light Extinction Coefficient of the Canopy in Rice Plants Direct-sown in a Submerged Paddy Field
Crop growth rate Direct sowing Interception of solar radiation Light-intercepting characteristics Planting pattern Rice
2009/7/24
In order to investigate effects of planting pattern on the interception of solar radiation by the canopy and the light extinction coefficient of the canopy in rice, the rice plants direct-sown in a su...
Relationships between Coefficient of Parentage and Genetic Distance Based on DNA Polymorphism in Barley Cultivars
Barley Coefficient of parentage Cultivar Genetic distance
2009/7/9
Genetic relationships between cultivars are estimated either by coefficient of parentage, which is calculated using the database of cultivars lineage, or from genetic distance, which is calculated ba...
Relationships between Coefficient of Parentage Estimated from Pedigree Record and Genetic Distance Estimated from DNA Polymorphism in Wheat and Barley Cultivars
Barley Coefficient of parentage DNA marker Genetic distance Kanto region RAPD analysis Wheat
2009/7/8
In breeding, understanding of the genetic background is effective for efficient improvement. The coefficients of parental correlation between the main cultivars of wheat and between those of barley i...
Grouping of Rice Breeding Lines According to Coefficient of Parentage and their Correlation with Susceptibility to Leaf Blast and Eating Quality
Breeding Lines Cluster Analysis Coefficient of Parentage Eating Quality Genetic Background Leaf Blast
2009/7/8
The genetic background of the 229 ‘Kanto’ lines developed by National Institute of Crop Science was studied. Cluster analysis based on coefficients of parentage among the ‘Kanto’ lines revealed the p...
Path Coefficient Analysis of Bambara Groundnut Pod Yield Components at Four Planting Dates
Bambara groundnut correlation path coefficients
2010/11/12
Little is known on the relationship between yield and its components in bambara groundnuts
outside the traditional growing season in Zimbabwe, information that is important when selecting cultivars f...
Estimating water needs of maize（Zea mays L.）using the dual crop coefficient method in the arid region of northwestern China
Evapotranspiration dual crop coefficient maize (Zea mays L.) FAO-Penman monteith equation crop water requirement
2009/3/3
Understanding crop water needs is essential for irrigation scheduling and water saving measures in an arid region because of its limited water supply. This study was performed using the dual crop co...
The Correlation and Path Coefficient Analysis for Yield and Some Yield Components of Soybean（Glycine max（L.）Merr.）in Southeastern Anatolia Ecological Conditions
Correlation Path Coefficient Analysis Yield Soybean
2009/1/23
The correlations among seed yield per decar and plant height, first pod height, branch number, seed yield per plant, 100- seed weight and harvest index, and direct and indirect effects of these charac...
Correlation and Path Coefficient Analysis For Some Yield-Related Traits in Rice（Oryza Sativa L.）Under Thrace Conditions
Rice (Oryza sativa L.) path coefficient phenotypic correlation yield components
2009/1/13
The associations among yield components, and their direct and indirect influence on the grain yield of rice were investigated. For this purpose, 80 breeding lines derived from 11 different cross popu...
Effect of Thermal Screens on the Microclimate and Overall Heat Loss Coefficient in Plastic Tunnel Greenhouses
Plastic tunnel Thermal screen Overall heat loss coefficient
2009/1/13
The objective of the present study was to evaluate the effects of thermal screens made of clear polyethylene (PE) and polyester material on the microclimate and overall heat loss coefficient in plast...
Correlation and Path Coefficient Analyses of Seed Yield Components in the Narbon Bean（Vicia narbonensis L）
Narbon bean (Vicia narbonensis L.) phenotypic correlation coefficient path coefficient seed yield yield components
2009/1/13
The purpose of this research was to evaluate phenotypic correlation coefficents between seed yield per plant and some yield components, and to determine the direct and indirect effect of 6 components ...