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   Special soil structure

    The core of vegetation restoration technology developed by Guanzhong Ecology is to make by hand soil medium with best performance. This kind of man-made soil has stable special structure that we called it excellent aggregate structure. This aggregate structure similar to honey comb could have the same water absorption as sponge, excellent water conservation, fertilizer conservation, water permeability and air permeability and also it could withstand rain erosion and soil erosion and therefore it is fit for plants to grow.

    The top soil that is free from human interference could provide sufficient water, air and nutrition for plants to grow. The top soil has good aggregate structure which gradually comes into being due to long term interactions with light, water, wind and organisms etc. Usually, less than 1cm thick top soil could be formed for every 100 years. So, we can say the top soil in the nature is non-renewable resources. The man-made soil has the same aggregate structure as natural top soil and could come into being in a short time and has better structural intensity.

    The soil with good aggregate structure is made up of particle groups of different sizes to enable it to have various pores of different sizes, namely, intra-aggregate pores and inter-aggregate pores. The intra-aggregate pores have the functions of water and nutrition conservation while inter-aggregate pores have the functions of water discharge and air ventilation. The clay particles inside good aggregate structures could be able to absorb a large quantity of nutrition for plants to grow and also various soil microbes inhabit in such structures. Additionally, excellent aggregate structures have incomparable water and soil conservation capacity which could withstand rainwater impact. When the rain is beating, the tiny particles will not move or flow away and rainwater could continuously penetrate through soil pores. In the forest soil where aggregate structures are well developed, those pores formed due to rot of tree roots and those holes formed due to movement of small animals could play part in conveying water. Therefore, the rainwater could easily seep into soil. In case of sunny running days, good aggregate structures could form water shielding wall to prevent water in deep soil evaporating, namely, a soil crust is formed to prevent water continuously evaporating and keep soil moist...



 
 
 
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