奇速英语

Unlike what you may imagine, taking good care of a plant can be difficult, especially when it comes to how to water a plant. Many people are not sure how often or how much they need to water their plants. Even some farmers may have the same problem. Luckily, a new technology called GrowStream can help them “talk” to their plants.

GrowStream is a watering system. Its tubes (管子) have special tiny holes in them. When plants need water, they will release (释放) chemicals (化学物质) through their roots. When the holes detect (察觉) these chemicals, they will open. The plants then get water from these holes. As the plants “drink” enough water, they stop releasing these chemicals. And that “tells” the holes to close back up and stop watering.

This system can help save 45 to 50 percent more water than common watering systems. It was created by a company called RDI. The company has brought the GrowStream system to many farms in South Africa. It is also testing the system in the US. It will be used to make the city greener while saving more water.

“GrowStream is more than just a technology,” said Jan Gould, CEO of RDI. “We want it to ‘talk’ to people, too. It ‘says’ two things: The earth’s natural resources (资源) are not so much, and we should take better care of the planet through new technology.”