"At present, 168 solar greenhouses, 5 intelligent greenhouses and 35 greenhouses have been built in the park, and the organic vegetable operating procedures have been used for the standardized planting of vegetables." Gao Jingxiu, deputy general manager of Changchun Guoxin Modern Agricultural Technology Development Co., Ltd., said that the advantage of intelligent greenhouses is that they can produce all the year round without being affected by climate and environment, And it can realize intelligent control.

Guoxin intelligent greenhouse staff detects the humidity in the greenhouse through the Internet of Things equipment. Photographed by Yuan Di

On the 13th, in the No. 1 intelligent greenhouse of Guoxin Agricultural Organic Demonstration Park, the fragrance of newly ploughed soil hit the face, and the newly grown vegetables included celery, spinach, cabbage, lettuce

"At present, 168 solar greenhouses, 5 intelligent greenhouses and 35 greenhouses have been built in the park, and the organic vegetable operating procedures have been used for the standardized planting of vegetables." Gao Jingxiu, deputy general manager of Changchun Guoxin Modern Agricultural Technology Development Co., Ltd., said that the advantage of intelligent greenhouses is that they can produce all the year round without being affected by climate and environment, And it can realize intelligent control.

On the northernmost side of the greenhouse, a black "water wall" is particularly conspicuous. The water flows into a line and into a groove at the bottom. "This water curtain wall is a circulating constant temperature water curtain device used in greenhouses. After a certain amount of water is injected, it is heated by solar energy or electricity, and then flows out of the water outlet, returns to the original place, and continues to circulate. Its working principle is similar to the heating system. The heated water brings out heat and moisture, which is very important for the ecological environment of greenhouses." Gao Jingxiu said, The constant temperature and moisture preservation effect is much better than that of traditional greenhouse heating and humidification, and there are fewer pollutants in the air. Through the experiment, after adding water curtain wall, the daily average temperature and ground temperature in the greenhouse increased by 2.3 ℃ and 1.4 ℃ respectively, the minimum temperature and ground temperature increased by 2.9 ℃ and 1.8 ℃ respectively, and the growth rate of vegetables accelerated.

In addition, organic planting is adopted throughout the park, and traceability system is established to realize remote control and supervision.

"For planting vegetables in smart greenhouses, manual labor is required in all aspects except seedling planting, picking and weeding." Today, there are advanced intelligent seedling equipment in seedling breeding, and management can be remotely controlled through the intelligent management platform of the Internet of Things. "A 2500 square meter greenhouse used to need five or six people to plant and manage, but now only two people are enough." Gao Jingxiu sighed, "It can be said that with the application of intelligent information technology, planting has changed from 'manual work' to 'intellectual work', which not only reduces the management cost significantly, but also doubles the economic benefits."