In the heart of Yunnan’s Honghe region, growers are turning to advanced climate solutions to meet the needs of high-quality flower production. At the Kaiyuan Modern Agriculture Park, the use of Svensson’s Harmony screens is helping gerbera growers create a cooler, gentler environment—one that protects delicate petals, supports growth, and adapts to changing seasonal demands.
The total planned area of Kaiyuan Modern Agriculture Park is 666Ha, of which 386Ha has been built as of now. It is located in Honghe, Yunnan province, mainly for cultivation of high-quality flowers. There are 13 companies in the park, including Aibida, Fengdao, Lishen, etc. Walking through the demonstration hall, we can see the first-phase gerbera greenhouse from Honghe Chuangsen company.
“There are many advanced devices to help with the climate for gerbera flowers, including outside and inside screens from Svensson, and climate control and irrigation from Priva. In total, 100,000 pots are grown in the 2Ha greenhouse and 28 gerbera cultivars come from Dutch breeding company, Schreurs. The colors and appearances are unique and attractive.” Director of the management committee Mr. Cao explained.
Honghe is located in the Southeast of Yunnan Province, where the four seasons are not very clear but it does have dry and rainy season. The rainy period starts from June to August, so the real ‘summer’ should be from March to May when the climate is dry with strong radiation. Considering climate demand of Gerbera and greenhouse devices, two layers of diffuse Harmony shading screen were installed. The diffuse light is gentle and homogenous which helps to prevent burning petals and promote flower growth.
“We choose different shading value for both in and outside screens considering the seasons and weather. Generally, to balance the light demand of gerbera and the cooling effect of greenhouse temperature, we will use the 70% outside shading screen in priority when the outside radiation is above 700W/㎡ and the ideal situation is to maintain the temperature below 30℃.” The technical manager Mr. Wang told us:” However, we have to stop using outside shading when the wind speed is above 8m/s. The inside shading screen will then be opened with a ventilation gap to control the climate. The close structure of the inside screen also helps us to save energy during winter night when heating the greenhouse.”
Based on the good performance of Harmony screens, Mr. Cao believes the choice for Svensson screens perfectly fits the second phase of gerbera greenhouse project, which will help them increase yield and quality.
COMPANY PROFILE
Ximin Cao
Director of management committee
Lei Wang
Gerbera technical manager
Location: Honghe, Yunnan, China
Greenhouse: 2 Ha - Plastic cover, glass side wall
Crops: Gerbera
Climate challenges:
Proper shading and cooling, energy saving in winter
Svensson solutions:
Harmony 6920 O E
Harmony 4345
