In China, the use of plastic bags filled with clay as seedling containers has been widely practiced for a long time. However, this traditional method has been phased out in many foreign countries due to its negative impact on root development. The roots of seedlings grown in such containers often become tangled, thin, or weak, which significantly reduces the quality of plantation forests in China.
For years, researcher Hou Yuanzhao from the Chinese Academy of Forestry has been studying both domestic and international nursery techniques. He emphasized that modernizing forest seedling production in China requires moving away from outdated methods and embracing advanced technologies like balanced root container seedlings. This approach is considered a key step toward improving the quality and efficiency of afforestation efforts.
The concept of balanced root container seedlings originated in France. It involves using non-woven fabrics and other breathable materials as containers, along with lightweight substrates that retain water, allow air circulation, and provide essential nutrients. These materials promote healthy root growth and prevent root tangling, leading to stronger, more resilient trees.
Why are non-woven containers preferred over plastic ones? Experts believe that these materials allow roots to grow freely without restriction, reducing transplant shock and increasing survival rates. When seedlings are planted, they can establish themselves quickly in the soil, avoiding the typical stress of the seedling stage.
Hou Yuanzhao explained that non-woven containers help form callus tissue on the roots, which allows for rapid root regeneration once the seedling is planted. This leads to faster growth and better resistance to environmental stresses like drought or wind.
This technology is considered revolutionary because it solves many problems associated with traditional seedling methods. It improves root structure, enhances tree resilience, extends planting seasons, and increases survival rates. It is especially effective in arid and mountainous regions where water conservation is crucial.
Additionally, this technique supports sustainable practices by eliminating the need for plastic recycling, reducing pollution, and promoting low-carbon afforestation. The use of slow-release fertilizers in the substrate also makes it ideal for soilless cultivation and energy-efficient farming.
Beyond forestry, the technology can be applied in agriculture, horticulture, and urban greening, offering economic and ecological benefits. For example, it supports multi-layer greenhouse farming and rooftop greening, contributing to urban beautification and environmental improvement.
Shandong Academy of Forestry has played a key role in adapting and improving this technology since 2000. After over a decade of research and development, their equipment now surpasses original prototypes in efficiency, performance, and durability. They have also secured several national patents, addressing previous technical challenges.
A recent symposium on the technology was held in Jinan, drawing over 140 participants from across China. Despite limited media coverage, the event highlighted growing interest in this innovative approach. Many large nurseries and afforestation projects have already adopted the technology, particularly in southern provinces.
Currently, the technology has been successfully implemented in 14 provinces and is gaining traction internationally. In Shandong alone, millions of high-quality seedlings have been produced, achieving survival rates of over 96% in afforestation projects.
With the adoption of balanced root container seedling technology, China is on the path to a new era of forestry innovation, setting the stage for improved forest quality and sustainable development.
Shaoxing Haisa Textile And Garment Co.,Ltd , https://www.haisafashion.com