The planting area of ​​Zizania bamboo shoots in Puli Township, Nantou County exceeds 1,600 hectares, which is the largest production area in the country. The planting process requires a lot of water.

(Photo by reporter Tong Zhenguo)

[Reporter Tong Zhenguo/Report from Nantou] Puli Town, Nantou County is the largest production area of ​​Zizania bamboo shoots in China. During the bamboo shoot period, a large amount of groundwater must be pumped to control the water temperature to ensure the quality of Zizania bamboo shoots. However, due to climate change, the drought has intensified in recent years, and groundwater has also been in short supply. According to news, National Jinan International University has continued to help farmers save electricity, and has also promoted rational water use since this year. It has set up smart pumping systems in the fields to match the water supply that is most suitable for the growth of bamboo shoots. The University of Jinan said that this plan hopes to establish bamboo shoots in the long run. Reasonable water use mode, taking into account both production capacity and the environment.

The planting area of ​​Zizania bamboo shoots in Puli Town is about 1,600 hectares, and the output accounts for 85% of the country. It is an important economic crop in the local area. In addition to ground water, it is easily affected by the environment and has temperature differences. The groundwater temperature is relatively stable. During the bamboo shoot harvest period, farmers often pump groundwater to adjust the water temperature to ensure the yield and quality of Zizania bamboo shoots.

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According to Jida University, according to previous statistics and surveys conducted by the Water Conservancy Administration of the Ministry of Economic Affairs and other units, the amount of groundwater planted with bamboo shoots is about 80.35 million tons each year, accounting for about 96.3% of the total. The speed is far lower than the pumping speed, and the increasing scarcity of water resources has also made farmers generally feel that saving water in agriculture is a top priority.

Through visits to farmers, the team of the College of Science and Technology of Jinan University found that most farmers use water based on experience. Obviously, the concept of rational water use is still a desert in the bamboo shoot industry. Therefore, the school continues to promote LED lights to save electricity and also conduct research on water conservation. This year The fields of Zhugeli farmers Liu Zongxian and Li Daliang were selected for the experiment.

Researchers set up multi-functional sensors, electric meters, water meters, water valves, pumping motors, etc. in the fields, hoping to collect a large amount of data on the growth environment of Zizania bamboo shoots for big data analysis, and find out the best water temperature for bamboo shoots in bamboo shoots. The research is about 18 degrees to 26 degrees. At present, 24 degrees is used as the benchmark. Once the water temperature is close to the critical value, the pumping will be started to cool down. The temperature of the field water will gradually reduce the flow, so as to achieve the effect of saving water. It is hoped that after 1 to 2 years or longer to obtain more accurate data.

Liu Zongxian, who is the monitor of the bamboo shoots production and sales team, said that 3 years ago, the University promoted LED lighting in the bamboo bamboo shoots field to replace power-consuming high-pressure sodium lamps to save electricity costs. He and his team member Li Daliang were willing to cooperate with the actual measurement, and the results proved that there were significant benefits in energy saving. , under the condition of not affecting the production capacity, the use of LED lights only costs 30% of the original electricity bill; the drought has been severe in recent years, and the water level and water volume of self-owned wells have decreased significantly. Farmers must do rational water use, and they are willing to cooperate with the school to do experiments , if results can be achieved and then expanded, the more people there are, the better the effect of water saving will be.

Cai Yongbin, dean of the College of Science and Technology of Jinan University, also emphasized that in addition to helping farmers rationalize and save water through smart technology, the Regulations on the Development of Renewable Water Resources have forced large industrial households to use recycled water, and agricultural irrigation water must also be paid attention to. Think about how to recycle, purify, and reuse. As well as strengthening groundwater recharge, these governments are duty-bound, but not a single agency such as agricultural affairs and environmental protection can promote it alone, and it needs to be jointly faced by multiple ministries and committees.

Zizania bamboo shoots in Puli Town often need to be irrigated with groundwater with stable water temperature during the shoot-setting period to ensure production and quality. Farmers have to open wells to fetch water.

(Photo by reporter Tong Zhenguo)

The team of the School of Science and Technology of National Jinan International University promoted the rational use of water for bamboo shoots in Puli, and explained to farmers that water is drawn through automated monitoring and control equipment.

(Photo by reporter Tong Zhenguo)

The Jida team placed temperature sensors in farmers' rice bamboo shoot fields to monitor changes in water temperature and use them as a basis for pumping groundwater.

(Photo by reporter Tong Zhenguo)