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   Ask: How to guarantee the seeding quality?
   Answer: The aggregate seeding and greening method of Qingdao Guanzhong Ecology completely relies on aggregate reaction. In order to guarantee complete such reaction in high quality, our company decides to use the materials produced and packaged by designated factory under strict supervision.

   Ask: Could the concrete slopes be greened?
  
Answer: we have successfully greened many concrete slopes some of which are detailed in construction method chapter. 

   Ask: Could greening be done in high-altitude and cold areas?
  
Answer: The biggest problem in high altitude and cold areas is to solve the sliding of soil medium caused by defrozen soil. The soil medium made with aggregate seeding and greening method has the same aggregate structure, porous structure and water permeability as honey comb.

   Ask: Could those acid or alkali slopes or various mining waste storage yards be greened?
   Answer: The aggregate seeding and greening method developed by Qingdao Guanzhong Ecology is also applicable to those slopes including water-side slopes, acid soil slopes, alkali soil slopes, and mining waste yards etc. We have special treatment solution for those slopes above.

   Ask: how long does it take to reach an ideal restoration effect?
   Answer: The slope greening effect may differ greatly due to different plant varieties, working season, slope conditions and construction locations etc. in order to restore natural and wild vegetation in North China, good greening effect could be achieved in 3-5 months if the work is started in spring.

   Ask: Since woods could be formed by seeding in the slopes, why not plant trees directly? What is the target of slope safety?
   Answer: Tests show seeding trees have strong root system and tap roots could penetrate down deeply. And planted trees have many root systems that are short and tiny. In case of hard soil or weathered rocks, this inclination will be more noticeable and it is very difficult to penetrate through original planting hole and into rock cracks.

   Ask: How to define slope vegetation restoration target?
   Answer: The vegetation restoration target for aggregate seeding and greening method of Qingdao Guanzhong Ecology is to try to create a natural, species-rich, permanent and green ecological environment. So, the plants should be selected according to the following rules: diversification and localization of plant varieties.

   Ask: Do the materials used conform to environmental protection requirements?
   Answer: This technology will not pose secondary pollution to environment and resources at stages of material production, seeding and growth. Special attention is paid to sustainable development and resources recycling and no fertilizers need to be used after seeding.

   Ask: Could the work be done all year around?
   Answer: the work could be done all year around because the soil medium could withstand wind and rain. The sprouting time and sprouting state may differ due to seasons. So, it is better not to work in cold period in the north.

   Ask: Could the work be done in rainy days? Does it need non-woven fabrics like alien soil seeding?
   Answer: in case of light rain, the work could be done as usual. The soil medium could withstand precipitation of 50mm/hour without any erosion in 30 minutes after seeding and could withstand precipitation of 100mm/hour without any erosion next day.

   Could the soil medium fall off the slope after corrosion or rotting of wire mesh?
   Answer: No
   The wire mesh could act as a skeleton to fix the soil medium during seeding period.

   Do all types of slopes need to be paved with wire meshes? Could part of wire mesh expose out of soil medium after completion of works?
   Answer: Not all slopes need to be paved with wire meshes.
   Soil hardness and rock cracks should be considered in use of aggregate seeding and greening method of Qingdao Guanzhong Ecology.

   Are there any requirements for rock cracks and soil hardness?
   Answer: The better it is to plant growth if the more rock cracks develop and the lower the soil hardness is. Usually, the plant roots could smoothly penetrate into soil with hardness 25mm.

   What is the slope gradient scope that is applicable to seeding?
   Answer: the aggregate seeding technology developed by Qingdao Guanzhong Ecology could help to work on slope of close to 90 degrees and also soil medium formed could be firmly attached.

   Could seeding be done directly on unstable slopes?
   Answer: When slopes has collapsed or is in unstable state, geotechnical measures should be taken to reinforce the slope and then seed it. The aggregate seeding and greening technology developed by Qingdao Guanzhong Ecology is a kind of slope greening technology rather than a geotechnical reinforcing method.

 

 
 
 
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