Plant factory: red blue LED instead of sunshine cost is still high

- News origin

The day before, the first case to intelligent control as the core of the plant factory by UNCED Institute of Chinese first successfully developed and put into operation in the Changchun agricultural expo. The successful development of the plant factory, indicates that China has made a major breakthrough in the field of agricultural high technology, has become one of the few master plant factory the core technology of the countries in the world, will have a profound impact on the development of modern agriculture in china.

Plant is recognized as the most advanced stage of facility agriculture in the world. It is a kind of new production mode which is highly intensive and is not restricted by natural conditions. At present, only Japan, the United States, Holland and a few developed countries to master this technology.

(according to people's daily, October 15)

In late autumn, the temperature dropped sharply in Beijing, and the cold and strong wind suddenly appeared in the winter. But in the huge greenhouse of Chinese Academy of Agricultural Sciences, bright sunshine, a variety of plants all around, as if you are in the forest. And the destination of the reporter -- plant plant, in this "forest" deep.

Not long ago, the news sparked interest -- the first domestic intelligent control is the core of the plant factory successfully developed, making China one of the few master plant factory the core technology of the countries in the world. What is the connection between the plant and the industrial civilization of the human being as the symbol of nature? What does the factory bring to people? With questions, the reporter decided to find out what.

Under the guidance of Dr. Cheng Ruifeng, director of the Institute of agricultural environment and sustainable development of Chinese Academy of Agricultural Sciences, the reporter went to the greenhouse. Maybe there's a plant cover on the top. On the left hand side, a hut stands quietly. Cheng Ruifeng walked over and turned the door handle, the door of the factory opened......

Amazing yield?

After entering the hut found that this is called the "factory", as the "laboratory" is more appropriate. Hut only 20 square meters or so, a door is a small room, can only accommodate up to two or three people, the wall display is reporting temperature, humidity and other data. Into the room, is the real "factory" where. In addition to the middle of a parallel channel can accommodate two people, on both sides of the cultivation of the frame of the three, above the lettuce, cabbage and other vegetable plants.

When it comes to the concept of plant factory, in charge of the project, Chinese academy researcher Yang Qichang said the environment, plant plant is to provide suitable environment for the growth of plant equipment, is divided into two parts of plant seedling plant and vegetable factory, the reporters came to the vegetable factory.

Plant factory to energy-saving lamps and LED for plant growth by artificial light, refrigeration heating two-way temperature and humidity and light - coupled photosynthesis and CO2 gas fertilizer regulation, online detection and control of nutrient solution 13 interrelated control subsystem, which can conduct real-time automatic monitoring of plant factory temperature and humidity, light, air, carbon dioxide concentration and nutrition and other environmental factors, the realization of intelligent management.

Through the high precision control of the plant environment, the growth of plants in this area is almost not restricted by natural conditions, the growth cycle is accelerated. Now the plant planted lettuce, cabbage, etc., about 20 days to harvest, and in the ordinary field, it takes a month to 40 days time.

In addition to fast harvest, high utilization of space is also an important feature of plant plants. The reporter saw in the factory are three cultivation racks, from the area of the same size is equivalent to three times of the open farmland, with its planting density, therefore, yield plant factory can reach tens or even hundreds of times of conventional cultivation.

In addition to vegetable cultivation, plant plants have also been used in raising seedlings. Cheng Ruifeng said that they have done experiments in cucumber and tomato seedlings. Compared to the production of vegetables, nursery cycle is shorter, generally about a week. Although the cycle of conventional cultivation is not very long, but not as good as the plant in the breeding of neat and robust. "After all, there are too many uncontrollable factors in the field, it may be very good today, but it may be cloudy tomorrow, and the day after tomorrow is likely to cool down. "

When a reporter in the plant factory to listen to the introduction of experts, the walls of the pipe suddenly issued a beep, broke the cottage originally quiet......

Do not rely on the sun without soil?

"This is the nutrient solution circulating," explains Cheng Ruifeng. Say, he put the plastic foam board used to fix the plant off, the original, the root of the plant is not grown in the soil, but completely immersed in nutrient solution.

Cheng Ruifeng said that the role of the soil is to provide nutrients and moisture, and nutrient solution in addition to providing water, also offers a variety of elements for plant growth, including a large number of elements such as nitrogen and phosphorus and potassium and zinc iron manganese and other trace elements, so there is no need to use soil cultivation. Soilless culture technology is now very mature, and the growth of water than the soil to grow a lot faster, but also an important reason for the use of water cultivation.

At this time, the reporter saw the door just to see the monitor on the monitor data, Cheng Ruifeng said it is the nutrient solution temperature control parameters. In cold weather, the system will heat the nutrient solution, if the temperature is very low, will cause damage to the roots of the plant.

Just from the beginning of the door, the reporter has always been there