LED plant lighting factory will become a Chinese business card

In the 1990s, every time you passed through the Lenovo Bridge in Beijing’s North Third Ring Road, it’s always strange: there are farmland within the Third Ring Road. Later I learned that it was the experimental field of the Chinese Academy of Agricultural Sciences.

I don't know when, this test field was built with a steel-structured house, which looks like an office building, not like a residential building; later, it was known that it was a much higher LED plant factory than the average test field.

All the dishes here can be picked and eaten directly.

“All the dishes here can be picked and eaten directly.” As soon as he entered the door, Liu Congwen, deputy general manager of Beijing Zhongda Yida Facilities Horticulture Technology Co., Ltd. told reporters.

Not long ago, the reporter should come to the first intelligent LED plant factory in China. In the hall of more than 300 square meters, the glass room is a plant nursery plant consisting of two rows of 5-layer seedling racks. Under the blue and purple artificial light source, the neatly arranged seedlings are growing vigorously. Liu Congwen said that the seedling efficiency per unit area can be more than 40 times that of conventional seedlings, and the seedling cycle is shortened by more than 40%. Outside the glass room, it is a vegetable factory planted in a three-layer cultivation bed. The fine-shaped ceramsite “soil” is planted with leaf lettuce. Almost every one looks exactly the same, letting reporters appreciate the “factory production”. . According to Liu Congwen, this is a deep-fluid (DFT) hydroponic cultivation model. The cultivated leaf lettuce is only about 20 days from colonization to harvesting, 40% shorter than the conventional field cultivation cycle, and the yield per unit area is open-field cultivation. More than 25 times, the product is clean and non-polluting, and the value of the product is high.

In front of a set of "Facilities Agricultural IoT Control System" screen called Agrilink, Liu Congwen explained to reporters how the LED plant factory is intelligently managed: the environmental control system consists of sensors, controllers and actuators. composition. “There are dozens of sensors here” covering the environmental factors of crop roots such as temperature, humidity, illuminance, carbon dioxide concentration, pH of the nutrient solution (pH value), nutrient solution concentration (EC value), liquid temperature and dissolved oxygen (DO value). Its rhizosphere environmental factors. Through the sensor and the visual analysis system equipped with artificial intelligence camera, the parameters such as temperature, light, water and gas fertilizer are continuously optimized, and the changes of plant growth phenotypic parameters are collected and learned and calculated. The data model of crop growth optimization is obtained, and the “plant dialogue” is implemented. “The ultimate goal is to achieve maximum yield and optimized quality with the least amount of resources.”

However, only 10 years ago, only a few developed countries such as Japan, the United States, and the Netherlands mastered this technology. "For us, this was science fiction."