Using sunlight to "irrigate" agriculture to save energy, save cost and increase benefit

Solar pumping system makes crops green

A few days ago, the drought for more than a month has made the water levels of rivers and reservoirs in many areas of Hainan close to the lowest level in history, but the 200 mu of mulberry trees in Yaying Village, Shilu Town, Changjiang County, are growing gratifying and green, unaffected at all, thanks to a new set of solar intelligent pumping system installed a year ago.

"according to the average calculation, the electricity charge for pumping a ton of water is 20 cents, and the cost of pumping water from electricity for farmers is relatively high." Zhou Xuedong, chairman of Hainan Guangyuanlong Energy Saving Technology Service Co., Ltd., believes that Hainan has sufficient light resources, and farmers should be encouraged to adopt energy-saving and cost-saving pumping systems such as solar energy.

According to statistics, the annual sunshine hours in Hainan are more than 2000 hours, the active accumulated temperature is 8400 to 9200 degrees Celsius, the summer is hot and the winter is warm, the hottest monthly average temperature is 25 to 29 degrees Celsius, and the coldest monthly average temperature is more than 16 degrees Celsius.

What is the effect of solar water pumping? Taking the 200mu mulberry garden in Yaying Village, Shilu Town, Changjiang County as an example, the cost of pumping water and electricity is 6000 yuan a month before the transformation. Although the transformation requires an one-time investment of 300000 yuan, the electricity cost can be saved at least 60, 000 yuan a year, while the service life of the solar intelligent pumping system is up to 25 years. In addition, the system has a single pump lift of 300 to 400 meters, which is very suitable for the sloping land in the middle of Hainan and can save a lot of line costs.

"the initial cost seems to be high, but it is at least twice as cheap compared with foreign products with the same performance. According to the one-time input, the pumping cost of diesel engine is 1.5 yuan per ton, while that of solar energy is only 0.2 yuan per ton. " Zhou Xuedong analysis said that the installation of solar intelligent pumping system can also reduce labor costs, the system is fully intelligent, can achieve remote control of mobile phones.

? New energy pumping and irrigating land to save cost and increase efficiency

Zushe Village, Liugong Township, Baoting County, Hainan Province is located in the mountains, and the village often drinks a lot of water. A few days ago, the town installed solar intelligent drinking water equipment and built a water tower, the system automatically draws water without water, and automatically stops when the water is full. It can save 120000 yuan in electricity, labor and maintenance costs a year. Zhou Xuedong said that the system is easy to operate and requires little maintenance.

"from the point of view of ordinary people, solar panels are very vulnerable to the impact of the weather, resulting in unstable output current, which is also a problem that we need to focus on." Zhou Xuedong said that Guangyuanlong's solar intelligent pumping system mainly solves the impact on the pump after the cliff drop of the current frequency due to the weather, and intelligently controls the current output of the solar panel. to prevent the pump from suddenly shutting down or starting.

Bai Renpu, a professor at Beijing Agricultural University, believes that the solar pumping system is in line with the central government's direction of developing new energy; in addition, the system innovates the pump technology, which can lift water to more than 300 meters in remote mountainous areas and hills where hydropower is difficult to reach. Solar energy can be used to lift water up, saving cost and increasing efficiency, and bringing real benefits to farmers. (Deng Weizhe)

Author: Deng Weizhe Source: agricultural Science and Technology News