Solar energy assisted soilless cultivation

The principle of this “solar green balcony ecosystem” is to cultivate flowers, vegetables, and fruits using soilless cultivation techniques.

The reporter took a closer look and the ecosystem was divided into three parts: a solar receiver board, a container made of discarded plastic bottles or glassware (or plexiglass tanks, if desired), and a miniature Small power pump. After the container is cleaned, it is connected with rubber hoses and forms multiple layers.

How does this ecosystem work? The children of Lushan Middle School gave a demonstration to the reporter. The solar energy receiving board converts solar energy into electricity and stores it in solar cells. The electricity drives micro-pumps to lift the water up to a certain water level. The water flow can be directly poured from the highest to the lowest level to plant plants in dozens of pots on the balcony. A water wheel made of used refills and mineral water bottle caps is impacted so that the water can complete a cycle and return to the original pool.

“Now 80% of plants are hydroponic. Soilless nutrient solutions contain the nutrients needed by plants, but they also need enough oxygen to support the respiration of plant roots. This system can circulate water through solar energy. The circulation of water can increase oxygen. The amount of dissolved in the water, which enhances the aerobic respiration of the roots, releases more energy, more absorption of mineral ions, and plant growth faster than in the soil.” instructor Chen Huanqing said.

What should I do if it rains? Mr. Chen said that solar energy is converted into electricity through solar panels and will store surplus energy in the battery for use on rainy days. Although the efficiency of converting solar energy into electrical energy is not very high at present, the converted electrical energy is enough to drive water pumping.

It is said that this ecosystem was invented by teachers and students in the experimental class and has now applied for national patents. Wang Li Korean Bell