نتایج جستجو برای: paddy fields

تعداد نتایج: 250627  

Journal: :Int. J. Applied Earth Observation and Geoinformation 2011
Dailiang Peng Alfredo R. Huete Jingfeng Huang Fuming Wang Huasheng Sun

In this paper, we developed a more sophisticated method for detection and estimation of mixed paddy rice agriculture from Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data. Previous research demonstrated thatMODIS data can be used tomap paddy rice fields and to distinguish rice from other crops at large, continental scaleswith combined Enhanced Vegetation Index (EVI) and Land...

2015
L. Hao G. Sun Y. Liu J. Wan M. Qin H. Qian C. Liu J. Zheng R. John P. Fan J. Chen

Rice paddy fields provide important ecosystem services (e.g., food production, water retention, carbon sequestration) to a large population globally. However, these benefits are diminishing as a result of rapid environmental and socioeconomic transformations, characterized by population growth, urbanization, and climate change in many Asian countries. This case study examined the responses of s...

Journal: :international journal of agricultural management and development 2014
ali mohammadi torkashvand mohammad sadegh allahyari zahra daghighi masuleh

in recent years, agriculture has become the prime polluter of natural resources. it is therefore essential to make assessments based on reliable indicators to ensure that an agricultural system remains not only productive, but also ecologically sound. a large area of arable land in guilan province is devoted to rice cultivation so the transition to environmentally sound agricultural practice in...

2012
LI Peng FENG Zhiming LIU Yujie XIAO Xiangming

Rice cropping systems not only characterize comprehensive utilization intensity of agricultural resources but also serve as the basis to enhance the provision services of agro-ecosystems. Yet, it is always affected by external factors, like agricultural policies. Since 2004, seven consecutive No.1 Central Documents issued by the Central Government have focused on agricultural development in Chi...

Journal: :Kagaku To Seibutsu 1986

Journal: :یافته های تحقیقاتی در گیاهان زراعی و باغی 0
خلیل چابک مرکز تحقیقات کشاورزی و منابع طبیعی مازندران، ساری ناهید آملی

this experiment was conducted in order to optimize the use of paddy fields as second cropping in the mazandaran province. study planed with 8 new cultivars and carried out in randomized complete block design with four replications during two years 2006 and 2007 in dashte-naz agricultural research station of sari. nursery prepared in the september and seedlings were transferred to the field in t...

Journal: :تحقیقات آب و خاک ایران 0
علی بخت فیروز دانشجوی کارشناسی ارشد هواشناسی کشاورزی محمود رائینی سرجاز دانشیار گروه مهندسی آب دانشگاه علوم کشاورزی و منابع طبیعی ساری

global warming, as a consequence of greenhouse gases accumulation, has exerted significant impacts on biosphere. methane, a product of reduction processes of organic carbon in anaerobic conditions, is mainly emitted from paddy fields. the aim followed in this research is to evaluate the impact of midseason drainage on methane emission from paddy fields. the research was conducted with three tre...

Journal: :Journal of Weed Science and Technology 1962

Journal: :Transactions of the Royal Society of Tropical Medicine and Hygiene 1991
D A Dance

'Whitmore's diScSlSe', 'morphia injector'8 septi-caemia', 'the great mimicker' and 'Vietnamese time-bomb' are some of the more colourful names which have been given to melioidosis since it was lirst described inBurma by WHITMORE & KRISHNASWAMI (1912). Pzz&monus pseudmllei has caused outbreaks of infection amongst animals in such diverse settings as a Hong Kong dolphinarium and zoos in Paris (GA...

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