搜索结果: 1-15 共查到“农学 Tractor”相关记录19条 . 查询时间(0.147 秒)
Effects of rubber-tired skidder and farm tractor on physical properties of soil in plantation areas in the north of Iran
aspen skid trail skidding machine soil disturbance timber skidding
2015/9/15
Physical properties of soil can be affected by machines that are used for skidding which have the potential to impact soil sustainability and forest productivity. The present study evaluated the effec...
Productivity and cost of farm tractor skidding
skidding operation continuous time study regression model forest system efficiency Iranian forest
2015/4/14
In this study, productivity rate and operation cost of farm tractor were evaluated in a mountainous natural forest. Data for the study came from a detailed time study in the Research and Educational F...
Development and evaluation of full-vehicle vibration model of MF 285 tractor
step function simulation transmitted vibrations Matlab software
2014/9/22
The vibration transmitted to the tractor driver not only leads to the driver health problems, but also reduces the driver working efficiency. One of the methods utilized to reduce driver vibration is ...
Determination of the effect of biodiesel use on power take-off performance characteristics of an agricultural tractor in a test laboratory
Tractor power take-off performance characteristics
2011/6/29
Tractor performance tests conducted under laboratory test conditions are important because these tests determine the performance characteristics used to compare strengths and weaknesses of tractors.
Determination of the eff ect of biodiesel use on power take-off performance characteristics of an agricultural tractor in a test laboratory
Tractor power take-off performance characteristics biodiesel
2011/3/29
Tractor performance tests conducted under laboratory test conditions are important because these tests determine
the performance characteristics used to compare strengths and weaknesses of tractors. ...
Effects of Soil Compaction by Tractor Traffic on reclaimed soil in Isahaya Bay
reclaimed field of Isahaya Bay soil compaction
2010/12/3
At a reclaimed field of Isahaya Bay, a vehicle running test was conducted using tractors, and the penetration resistance (cone index) of soil before and after the running was compared. From this resul...
Reduction Rates of Fuel Consumption by Gear Up and Throttle Down on an Agricultural Tractor
engine speed road traveling rotary tillage
2010/10/25
We investigated the effect of operating conditions such as travel gears, PTO gears and engine speed of a 24kW agricultural tractor on fuel consumption. In the indoor tests, we found that as the PTO po...
Present Situation of Tractor Implement Row-following Operation in Large-scale Upland Farming
crop management tractor implements row spacing
2010/12/2
This study was to examine farmer's working conditions and the accuracy of tractor implements in following rows in a field, and to consider the most appropriate control speed of such implements as prel...
Tractor Power Requirement of No-Tillage Seeder under Different Cover Crop Residue Management
Cover crops No-tillage seeder Power requirement
2010/12/3
No-tillage with cover crop has great potential to improve soil quality, however, it is still not clear what no-tillage seeding technique should be used under cover crop residue mulch in upland crop pr...
A research on cost analysis and determination of management data in paddy drilling with steel wheel tractor
Paddy drilling equivalent cost analysis management data
2011/1/12
In this research, management data were determined for paddy seed broadcaster being used with steel wheel tractor (John Deere 5625) in rice farms. Simple cost comparison between seed broadcaster and ha...
Fuel consumption distribution for machine and tractor activities in some PTO driven machine operations
Tractor PTO driven machine fuel consumption PTO options
2011/1/11
In this study, fuel consumption values needed for the machine to operate (machine activity) and for the tractor to be able to move (tractor mobility) in field conditions in agricultural activities wer...
Morphological Analysis of Forest Tractor Assemblies
tractor assembly morphological analysis timber forwarding ecological suitability thinnings
2009/2/7
The results of this paper present the morphological analysis of nine different types of tractor assemblies used in forestry practice in timber forwarding from thinning operations of lowland forests....
Integrated Weed Control in Sugar Beet through Combinations of Tractor Hoeing and Reduced Dosages of a Herbicide Mixture
Sugar beet weed control low-dose herbicide application tractor hoeing
2009/1/12
Weed control is performed by hand in 83% of the sugar beet growing area in Turkey. Due to the movement of the labour force to industry recently, the lack of labour has led to a huge problem. Therefor...
Model of CO emission level of exhaust gases in tractor engines fed with biofuels
fumes biofue rapeseed methy ester
2008/11/26
The article presents results of research on the
levels of emission of carbon monoxide (CO) in exhaust gases
emitted by the S-4002 engine of an agricultural tractor depending
on two variables: the h...
Apple Harvesting by a Backpack Shaker and a Tractor-Mounted Shaker
Apple Vibration harvesting Backpack shaker
2010/12/2
Mechanical apple harvesting experiments were conducted using a backpack shaker and a tractor-mounted shaker. The shaken fruits were collected by a 2.7m by 2.7m catching frame laid on the ground. The r...