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As a tropical country Bangladesh receives a substantial amount of solar insolation suitable for PV application. Being an agricultural economy, the irrigation need is increasing day by day. Use of diesel run pumping system is neither cost effective nor environment friendly. Even though 47.8% of the total irrigation pumps are diesel run which emits a huge amount of CO2 and other toxic gases. In this...
System approach and sustainable use of water and energy in all kinds of human activities is not required for financial reasons only. It is also a legal and community obligation. The paper deals with the application of Critical Period Method for irrigation system design. Irrigation system includes a Solar Photovoltaic (PV) generator and inverter, a pump station, a water reservoir and pipelines. PV...
This paper describes the design and implementation of a smart sprinkler system, utilizing a mesh capable wireless sensor network for monitoring and controlling field irrigation systems. Soil types and their characteristics with regards to water retention were investigated. The hardware and software for the sensor and sink nodes were implemented using the core of the WSN communication Xbee Series II...
Due to climate change and high price of fossil fuel, demand of electricity for irrigation need is increasing. Harnessing solar power to meet this increasing demand can be a good solution. In this paper, we have shown the design and performance analysis of a directly coupled solar photovoltaic (PV) motor-pump system operating at Gaibandha, Bangladesh. Three 1kW DC series motor coupled with pumps were...
In this research, the evaluation methods of water resource used for industrial and society are presented in extreme arid areas where the yearly rainfall is less than 50mm, such as the area of Turpan Prefecture and southern area of Xinjiang Region. The Society Method, which deals with the overall water condition, is proposed first. This method covers normal life style and saves life style, which is...
The ubiquitous public park is a mix of several technologies that are related to ecology, security, economy, technology, social and entertainment. The article's main purpose is about a ubiquitous watering electricity and irrigation system that offers a self-sufficiency of resources mainly electricity and water. Moreover, the system provides the automation and the periodicity of irrigation to ensure...
To reveal factors that affect farmers' water saving willingness, we used the analysis of logistic regression model, had an empirical investigation with household questionnaire in the middle basin of Heihe River, the second largest inland river basin in arid area of Northwest China. The results show that the personal factors (age, education, being a village cadre, or a MCCP), household factors (proportion...
Hetao Irrigation District, one of China's four major irrigation area in the region are widely distributed with the seasonal frozen soil and the hydraulic structure in irrigation being positioned at drainage channels in the whole irrigation. In the long winter, the channel works is bound to withstand freeze-thaw cycles seriously. The topic of its maintenance has always been the focus of the loop Irrigation...
Water has become the most important restricting factors for social and economic development. As one of the efficient tool for water allocation, water trading plays an essential role in places with intense water supply situations like Australia. This paper first gave a short introduction of water trading in Australia; then the construction and operation of water trading system was described; finally...
By analyzing characteristics of inferior variation of water environment since 1980s, point out the severity of inferior variation in Jinghuiqu Irrigation District, especially for groundwater environment. and meantime possible reasons for inferior variation of water environment are discussed from nature and anthropogenic factors. The results indicate that reduction of surface water irrigation quantity...
There was a complex interaction between water management policy and desertification in arid area. Based on the method of combined of field survey and participatory interviews, we studied that water resources utilization and the effect of water management policy performance on water crisis and desertification. The result showed that water resource management policy has been made remarkable achievement...
Pot experiments in 2 consecutive years of maize (Zea mays L.) and soybean (Phaseolus vulgaris L.) irrigated with reclaimed water were carried out to investigate the impact of water quality (all reclaimed water, mixed water of fresh and reclaimed water, and alternating irrigation of fresh water and reclaimed water) and irrigation phase of the reclaimed water (whole growing seasons, early phase of growing...
The response of chlorophyll fluorescence parameters characteristics and spectral reflectance in New sugarcane 22 (T22) were studied under 4 different water treatments in pots. The results showed that, except qN increased, other chlorophyll fluorescence parameters as Fv/Fm, PS II, rETR and qP decreased with increasing of water stress. Photo system can be injuried by drought, the injury will be further...
Water stress is the most common environmental threat that affects seedlings growing, so it has an important significance for seedlings' reasonable irrigation to study seedlings' water stress acoustic emission (referred to as AE) signal. However, the AE signal about water stress on seedlings is always generated with many kinds of interference noise, such as ambient noise, electric noise etc. It is...
This paper presents the experimental analysis on the relationship between Ultrasoinc acoustic emissions (UAEs) and water consumption associated with transpiration. In order to avoid background noise interference, the UAEs detecting frequency is between 100 KHz and 1 MHz. From the experiments, the hypothesis can be drawn that irrigation conducts when the UAEs reach a certain threshold, which may be...
The farmers' bearing capacity to agricultural water price determines the capacity and process of Water Price Reform, then how to correctly estimate it is an important prerequisite for a reasonable cost-sharing mechanism of agricultural water fee. based on the research status at home and abroad, this paper first described a method to survey farmers' water using based on participatory rural appraisal...
The characteristic of water transport and loss in a direct-seeded paddy field, Danyang Region at upstream of Taihu Lake Basin, was studied under local traditional field water management using Hydrus-1D model. Results show that the drying/wetting boundary condition on soil surface was well simulated by using divided stress period method in the Hydrus-1D model, and the estimated hydrodynamic parameters...
A new model of crop response to water for the spring wheat in northern China was developed using the BPANN approach based on a set of data measured from a deficit irrigation experiment for the spring wheat. The analysis of its simulation results showed that the model is able to correctly express the relation between the yield and water use of the spring wheat. The comparison with the Minhas model,...
The supply mode selection of water transfer projects is closely correlative with water right quality. This paper firstly proposed the concept of water right quality in water transfer project, and set up its quantitative model from the view of economy. Then the quantitative boundaries between the three kinds of supply modes, which are government supply mode, public-private partnership supply mode and...
The determination of crop production functions which describe the relationship between irrigation water and crop yield under the assumption of optimal irrigation scheduling is a major building block for a more efficient and sustainable water management. In this paper we introduce a methodology to determine the entire crop production function for a given scenario within a single run of a multi-objective...
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