Pasture water supply is of great significance for rational management of grassland, maintaining grassland ecological balance and promoting the development of animal husbandry. The investigation of international advanced pasture water supply technology has important reference value for the development of science, technology and economy in domestic pasture area. The advanced pasture water supply technology in the United States, Canada and Holland was summarized and analyzed through the literature retrieval with database. And the current situation of water supply technology in typical pastures of China was investigated and summarized through the field investigation of the Inner Mongolia pasture and the visit of the local herdsmen. The foreign pasture advanced water supply technology of Fresh Water Mill, batteryless photovoltaic water supply system, stand-alone mixed energy supply system, wireless data collection system of remote water supply system, automatic constant temperature water supply system and automatic water supply control system for pasture are put forward in accordance with the characteristics of pasture in China.

Photovoltaic irrigation has been widely used in many areas without conventional energy sources. In order to solve the problem of unstable operation and poor irrigation uniformity caused by the diurnal variation of solar radiation, a photovoltaic direct-drive water-saving irrigation system with automatic regulation was proposed. By using automatic control technology and the method of zonal rotation irrigation, all the electric energy generated by solar panels can be converted into irrigation energy under different light intensities, so that the water-saving irrigation equipment can work stably in different regions and the irrigation uniformity is ensured in different regions. According to the characteristics of solar energy resources and photovoltaic water-pumping units, the optimum design method of photovoltaic water-saving irrigation system is put forward. The minimum capacity of solar panels can meet the irrigation demand of a certain area, which can guide the engineering design of solar water-saving irrigation, greatly improve the engineering quality and energy utilization rate. It has the advantages of simple design, low cost, stable operation and energy-saving ring.

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