نتایج جستجو برای: Land leveling

تعداد نتایج: 120708  

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
زینب شکوهی دانش آموخته کارشناسی ارشد اقتصاد کشاورزی دانشگاه شیراز محمد بخشوده استاد اقتصاد کشاورزی دانشگاه شیراز

determinants of the adoption of land leveling in fars province were investigated through an application of logit model to data collected from a sample of 300 farmers. the results revealed that area under cultivation, farmers' education, earnings beside-farm-income, access to credits, availability of laser applied land leveling instruments and equipments in the region, as well as dam water,...

2006
K. R. Brye

The spatial variability and distributions of soil physical and biological properties, and the relationships between them, are not well-characterized in agroecosystems that have been land-leveled. The objectives of this study were to characterize the short-term impacts of land leveling on the magnitudes, spatial variability, and spatial distributions of soil physical and biological properties in...

Journal: Journal of Tethys 2017

Land leveling is one of the most important steps in soil preparation for consequent objectives.  Parallel policies need to take both energy and environmental subjects into the account as well as certain financial development and eco-friendly protection. Energy is one of the most important elements in agricultural sector. Nevertheless, pollution is linked with the usage of fossil fuels (particul...

2010
Mingming Guo Gang Liu Xinlei Li

Laser-controlled land leveling system can obviously improve the planeness of the field and enhance the efficiency of irrigation. The 3D topographic information was needed for project design and evaluation of laser land leveling. In order to obtain the topographic information efficiently, an onboard field 3D topography surveying system was developed. The surveying system consisted of a measuring...

In this paper we develop a new approach for land leveling in order to improve the topology of a large area for irrigation or civil projects. The objective in proposed model is to minimize the total volume of cutting so that technical requirements of land leveling such as suitable slope and standard ratio of cutting to filling and maximum penstock point’s height are considered. We develop a warp...

Journal: :Remote Sensing 2018
Wei-Chia Hung Cheinway Hwang Yi-An Chen Lei Zhang Kuan-Hung Chen Shiang-Hung Wei Da-Ren Huang Shu-Han Lin

Chiayi County is located in the largest alluvial plain of Taiwan with extensive aquaculture and rice farming sustained by water extracted from groundwater wells. Chiayi is a typical aquaculture area affected by land subsidence, yet such lands worldwide combine to provide nearly 90% of global aquaculture products, greatly reducing oceanic overfishing problems. This study uses precision leveling,...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
مریم السادات تاجر دانشگاه تربیت مدرس، ترویج و آموزش کشاورزی غلامرضا پزشکی راد دانشگاه تربیت مدرس، ترویج و آموزش کشاورزی کورش رضایی مقدم دانشکده کشاورزی دانشگاه شیراز، ترویج و آموزش کشاورزی

many new technologies have been employed to improve welfare conditions and to provide an optimum utilization of the existing resources in agriculture sector. laser leveling technology is one of the most progressed in maintenance of soil and water resources which itself has an important role in sustainable development. the purpose of this study was to realize the specifications of adopters vs. n...

Journal: :international journal of industrial engineering and productional research- 0
hossein shams shemirani golpayegan university of technology faride bahrami golpayegan university of technology mohammad modarres sharif university of technology

in this paper we develop a new approach for land leveling in order to improve the topology of a large area for irrigation or civil projects. the objective in proposed model is to minimize the total volume of cutting so that technical requirements of land leveling such as suitable slope and standard ratio of cutting to filling and maximum penstock point’s height are considered. we develop a warp...

Journal: Pollution 2017

Land leveling is one of the most important steps in soil preparation and cultivation. Although land leveling with machines requires considerable amount of energy, it delivers a suitable surface slope with minimal soil deterioration as well as damage to plants and other organisms in the soil. Notwithstanding, in recent years researchers have tried to reduce fossil fuel consumption and its delete...

Journal: :تحقیقات مهندسی کشاورزی 0
سیدمجتبی شفاعی دانش آموخته کارشناسی ارشد امین اله معصومی استادیار گروه مکانیک ماشین های کشاورزی دانشکده کشاورزی دانشگاه صنعتی اصفهان جعفر قیصری دانشیار گروه مهندسی کنترل دانشکده برق و کامپیوتر دانشگاه صنعتی اصفهان

excessive cutting depth during leveling of agricultural land increases power needed by the tractor drawbar and will result in undesirable slippage and excessive strain on the tractor engine.  the result of sustained excess will be the break-down of the tractor. an auxiliary blade depth controller to prevent overloading during leveling was designed, fabricated and evaluated in this study. the sy...

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