نتایج جستجو برای: water saving

تعداد نتایج: 582329  

2011
Zhifang Chen Jinglei Wang Jingsheng Sun Aiwang Duan Zugui Liu Ni Song Xiaofei Liu

To improve the management of irrigation district is a key to develop water-saving agriculture. Based on the basic principles of water-saving irrigation, and using the method of Modified Penman Monteith and water balance equation, The system of irrigation management and decision support based on WEBGIS was developed,which is according to the soil moisture, crop growth status, meteorology change ...

Journal: :Journal of environmental management 2012
Jian Wu Junjie Wu Xiaoxia Wang Ma Zhong

This study evaluates four policy options to secure the water supply needed for wetland conservation in Qixinghe--a national wetland nature reserve in China--using four criteria: cost effectiveness, probability of success in achieving the water-saving goal, political feasibility, and farmer acceptance. This multi-criteria analysis framework reveals the ecological, economic, and socio-political t...

2005
Daniel L. Carter Dinesh O. Shah

Saving of energy and time in drying of laundry directly depends upon the residual water content of the fabric at the end of the spinning cycle. If the amount of water left in the fabric is significantly reduced then the time and energy required to dry the fabric is less. Both these factors benefit the consumer and the national energy consumption. For the USA alone, the 30 % reduction in the res...

2008
Huiming Liu Weiming Chen Xiaobin Dong Xinshi Zhang

Manasi River basin is located in the north foot of Tianshan Mountain, south edge of Zhunger Basin, central-north Xinjiang province, with typical arid features of northern China. As the pressure on water resources in Manasi river basin is mounting because of rapid economic development, its conservation becomes ever more important. Climate change is another major threat to the future of water res...

2005
James M. Hughes Jeffrey P. Koplan

nsafe water is a global public health threat, placing persons at risk for a host of diarrheal and other diseases as well as chemical intoxication. Unsanitary water has particularly devastating effects on young children in the developing world. Each year, >2 million persons, mostly children <5 years of age, die of diarrheal disease (1,2). For children in this age group, diarrheal disease account...

2004
E. Humphreys Craig Meisner Raj Kumar Gupta Jagadish Timsina Yong Lu Yadvinder Singh M. A. Gill I. Masih Zheng Jia Guo J. A. Thompson

Water shortage is a major constraint to sustaining and increasing the productivity of rice-wheat systems. Saving water can be elusive in that reducing seepage, percolation and runoff losses from fields does not necessarily save water if it can be recaptured at some other temporal or spatial scale, for example by groundwater pumping. Many technologies appear to save substantial amounts of water ...

2008
Anders Berntell Malin Falkenmark

2013
Zhao Li-Ming

Confronted by the population mushroomed and the increasing shortage of water around the world today, water-saving irrigation and intensive cultivation are inevitable and viable. In this paper, the auto water-saving irrigation based on wireless sensors networks and multi-source information fusion technology based on entropy is introduced. Using wireless sensors networks which adopts nRF2401 as t...

Journal: :پژوهش آب در کشاورزی 0

plant performance and freshness is related to the pattern of its root growth development, which is highly affected by the water amount and water use management. therefore, the spatiotemporal variation of maize root under five treatments including full irrigation treatment (fi), partial root-zone drying treatments at two levels (receiving 75% of et =prd75, and 55% of et= prd55) and deficit irrig...

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