Incorporating modem and advanced technology （various electronic devices） to excavational machinery led to become more efficient, better quality and cost effective. The continuous development of equipment is also ver...Incorporating modem and advanced technology （various electronic devices） to excavational machinery led to become more efficient, better quality and cost effective. The continuous development of equipment is also very important in the earth moving procedures which require significant time and expense to achieve the so-called ＂precision agriculture＂ or rather ＂precise management of agricultural inputs＂. One of the ＂precision agricultural＂ works is the land leveling. In recent years, land leveling is done with the use of a scraper （blade） mounted on the agricultural tractor. An electronic system controls the height of the blade automatically, without any operator intervention. In this paper, the field efficiency of the tractor MF6290, of 135 Hp horsepower, is calculated with a leveling blade of 4 m width, in the land leveling of rice cultivation, and in the rotation of different crops in different land preparation conditions （initial and final slope） in the area of Thessaloniki, northern Greece. The raw data revealed that the performance of the tractor ranged from 0.402 to 0.82 lha/h, on a slope 0%, while for surfaces with different initial and final slope, it ranged from 0.107 to 0.118 ha/h.展开更多
The latest effective utilization of bamboo resources is changing from domestic industry to mechanical industry. This fact will be required a lot of raw material from a large scale factory, therefore, what kind of bamb...The latest effective utilization of bamboo resources is changing from domestic industry to mechanical industry. This fact will be required a lot of raw material from a large scale factory, therefore, what kind of bamboo should be selected for a material. So, this study discussed on this matter through investigation and experiment. Results of this study are as follows： 1） Characteristics of bamboo different from trees and grass; 2） Environmental factors： a） annual mean temperature in 10-15 ℃ shows good growth of culm in temperate area and more than 20 ℃ also shows in tropical area, b） Rainfall： more than 1,000 mm year-1 is necessary for growth of culm in temperate and tropical area, and still more in addition to two times of 100 mm month-1 in temperate area, and three times of 200 mm month-l in tropical area, c） Soil and topography： brown colored soil and flat or gentle slope show better growth in temperate area, but red colored soil and slope are not suitable in tropical area, d） Geographical distribution of bamboo related with growth type shown in Figs. 1-3. Productivity of bamboo： annual productivity of bamboo is the biggest compared with other type of vegetation; 4） Selection of two growth type of bamboo： many big bamboos are growing in tropical area; 5） Furthermore items discussed in this report.展开更多
文摘Incorporating modem and advanced technology （various electronic devices） to excavational machinery led to become more efficient, better quality and cost effective. The continuous development of equipment is also very important in the earth moving procedures which require significant time and expense to achieve the so-called ＂precision agriculture＂ or rather ＂precise management of agricultural inputs＂. One of the ＂precision agricultural＂ works is the land leveling. In recent years, land leveling is done with the use of a scraper （blade） mounted on the agricultural tractor. An electronic system controls the height of the blade automatically, without any operator intervention. In this paper, the field efficiency of the tractor MF6290, of 135 Hp horsepower, is calculated with a leveling blade of 4 m width, in the land leveling of rice cultivation, and in the rotation of different crops in different land preparation conditions （initial and final slope） in the area of Thessaloniki, northern Greece. The raw data revealed that the performance of the tractor ranged from 0.402 to 0.82 lha/h, on a slope 0%, while for surfaces with different initial and final slope, it ranged from 0.107 to 0.118 ha/h.
文摘The latest effective utilization of bamboo resources is changing from domestic industry to mechanical industry. This fact will be required a lot of raw material from a large scale factory, therefore, what kind of bamboo should be selected for a material. So, this study discussed on this matter through investigation and experiment. Results of this study are as follows： 1） Characteristics of bamboo different from trees and grass; 2） Environmental factors： a） annual mean temperature in 10-15 ℃ shows good growth of culm in temperate area and more than 20 ℃ also shows in tropical area, b） Rainfall： more than 1,000 mm year-1 is necessary for growth of culm in temperate and tropical area, and still more in addition to two times of 100 mm month-1 in temperate area, and three times of 200 mm month-l in tropical area, c） Soil and topography： brown colored soil and flat or gentle slope show better growth in temperate area, but red colored soil and slope are not suitable in tropical area, d） Geographical distribution of bamboo related with growth type shown in Figs. 1-3. Productivity of bamboo： annual productivity of bamboo is the biggest compared with other type of vegetation; 4） Selection of two growth type of bamboo： many big bamboos are growing in tropical area; 5） Furthermore items discussed in this report.
