Composite nutrient planting sand and manufacture method thereof

Abstract

The invention belongs to the field of sand planting, and particularly relates to composite nutrient planting sand which can be directly used for planting and has functions of water retention and fertilizer retention and a sand planting structure containing the composite nutrient planting sand. The planting sand comprises a porous sand ball, a microbe bacterium membrane and a nutrient membrane, wherein the microbe bacterium membrane and the nutrient membrane are sequentially wrapped outside the surface of the porous sand ball from inside to outside. The porous sand ball is in a porous structure formed by natural sand granules and adhesion agents at least containing hydrophilic adhesives in an adhesive mode, and a pore suitable for adsorption is formed between each two adjacent natural sand granules. According to the planting sand, the existing natural sand granules are adhered and form pores, nutrient fertilizer is effectively maintained by means of porous performance of the sand ball, accordingly the fertilizer and other nutrient substances which are suitable for plant growth can be loaded in pores and on surfaces through hanging membranes, the planting sand capable of supplying the fertilizer is formed, necessary fertilizer nutrients are provided for the plant growth and meanwhile fertilizer the occasion that the fertilizer runs off along with water loss is effectively avoided, and the utilization rate of the fertilizer is beneficially improved.

Description

Technical field [0001] The invention belongs to the field of sand planting, and specifically relates to a water- and fertilizer-retaining compound nutrient planting sand that can be directly used for planting and a sand planting structure containing the planting sand. Background technique [0002] The phenomenon of desertification is a natural phenomenon, which is caused by the climate change caused by the movement of the earth's dry zone, which leads to the desertification of local areas. Moreover, with the increasingly harsh global climate and rapid population growth, the land has been over-exploited, cultivated, and animal husbandry has led to faster and faster global desertification. The arable land that can be planted has decreased, and the production capacity of agriculture and animal husbandry has continued to decline. Especially for a country like my country with a small land and a large population, the negative impact of the increasing desertification process leading to ...

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Problems solved by technology

[0006] However, the treatment of sand in this invention adopts a general simple mixing process, directly mixing organic waste or by-product powder and soil microorganisms and inoculating them on the sand, and using the coagulation of microorganisms in the presence of microorganisms can realize sand separation. The adhesion force between them can reduce the loss of sand and soil caused by wind and sand flow. The sand aggregates described in this invention are more used in desert planting to prevent loss. For daily planting, water and fertilizer conservation are required. performance, the adhesion between microorganisms is not applicable, and the sand has not undergone any pretreatment, whether its smooth outer surface is suitable for microbial inoculation adsorption and how much adsorption capacity is also open to question, so the sand cohesion The body is not suitable for the planting with sand as the main planting body in daily planting. Therefore, there are still great limitations for the large-scale promotion of sand planting technology

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